Interplanetary Re-Entry Mechanics and Associated Recovery Range Command and Control Applications.pdf

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.---- ==-i DECLASSIF iED UNDER AUTHORJTY OF TH E I INTE RAGENCY APP EAL P NEL, E.O . 13526, 5.3(b)(3) ISCA P APPEAL NO. 2009-068, docume nt no. 5 DECLA SIFICATION DATE: November 13, 2014 SECRET (U) I NTERPLANETARY RE-ENTRY M ECHANICS AND ASSOCiATED RECOVERY RANGE CO M MAND AND CONTROL APPLICATIONS OCTOBER 1 963 T ASKS 61 82(22) 61 82{78) AIR FORCE MISSILE DEVELOPMENT CENTER ·· DEPUTY f@liiGN tECHNOLOGY & ltl SYS'ftfft:' MOUO M!f.ll Alrl fORCE US! NtW rxcu...x;: ; AJ ·• COPY NR 3 G AFMOC SECHE'l' (This pcce ts

Transcript of Interplanetary Re-Entry Mechanics and Associated Recovery Range Command and Control Applications.pdf

---shy ==-iDECLASSIF iED UNDER AUTHORJTY OF TH E

I INTE RAGENCY SECURJTYCLASSIFICATIO~ APP EAL P NELEO 13526 SECTJO~ 53(b)(3)

ISCA P APPEAL NO 2009-068 document no 5 DECLA SIFICATION DATE November 13 2014

SECRET

(U) INTERPLANETARY RE-ENTRY MECHANICS

AND ASSOCiATED RECOVERY RANGE

COMMAND AND CONTROL APPLICATIONS

OCTOBER 1963 TASKS 6182(22)

618278)

AIR FORCE MISSILE DEVELOPMENT CENTER

middotmiddot DEPUTY ~01 fliiGN tECHNOLOGY

ampltl 10~(~ SYSftfft (O~~cUU

MOUOMfll Alrl fORCE US

NtW Ml~CO

rxcux AJ middotbull bull middot~ COPY NR 3 G AFMOC 63-555~

SECHEl (This pcce ts unct~au tr~~c

1 Inormatbullon conllictlng w 1th or pertinently affecting that ~onshytained 1 n this publication should be forwarded by t he recip1ent

d1rectly to

AFMDC MDF) Holloman AFB New Mex1co 88330

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5 his pubHcation has L gte designed to meet tha 3pecific nds oi the re cipient for intelhgence Furthe- d strritctlltHt - 1 the recipient of pats -- the whol middot sulordiuate elements must be based on the specific need middot-to-lmow of the rectpient to perform h i s a ~ 1gned m1ssionn (Authority AFCIN Policy Letter 205 S

da ted J February 1959)

bullbull

~middot-~-=--bullmiddot middot---~middot I bull _ -bullmiddot -~~ -middot1gt_bull_~~-- rmiddot--middot~-~---~--7-~-~~-~--bull middot~-- middot- ~ middot ltII middot

_~middot middot middot middotmiddotmiddotmiddot middot middot middotmiddot- -middot- _ --~ middotmiddot--middotmiddotmiddot middot~ middot middot ___

FOREIGN T ECHNOLOCY REPORT

AFMDC-TR-63-5

(Title Unc lassipoundied) lNTE RPLANETAR Y RE-ENTRY MECHANICS AND

ASSOCIATED RECOVERY RANGE COMMAND AND CONTROL APPLICATIONS

October 1963

Tasks 6 18222 6182(78)

Prepared lgty

Captain William J Barlow Mr Michael E Cason Jr

Th1s 1s a Foreign Technology document prepared and published by AFMDC or use primarily within AFSC It has net been coordinated within AFSC o r the Office o the ACSlntelligence Headquarters US A F and does not -ecessarily rltgtpresent an greed Al~ ForC O posit ion

DEPUTY FOR FOREIGN TECHNOLOGY AlR FORCE MISSIJE DEVELOPMENT c N i iiR

AIR FORCE SYSTEMS COMMAND HOLLOMAN AIR FORCE BASE NEW MEXl-0

AFMDC 63-5655SECRET (This page is unclassified)

-middot-~ middot- -middot-middot~--middot~~ 0 l bull

-

--

- ----- middotmiddotmiddotshy middotmiddotmiddot-middotmiddot shy - shy middot4-middot-middot-~- shy --- middot - shy --shy -- -middot~middot

5poundCREi

(U PREFACE

The inlormation contained in thgts Technical Report has been

prepared primanly for the use of AFSC pe r-sonnel cnQaged in th~

study opound Sovict cpace technology This contribution emphasizebull

11o bulltulated planetary re - ettry and land area recovery m echanics

and will be o intereampt to those atgtalyots c oncerned wlth future

Soviet p lane tary space technoloC)bull ~

(U) PUBLICATION REVIEW

Thia Foreign Techoology document has been reviewed and is

appovecl for difltribution within the Air )lor Syu~erlamp rbullnbull~~d (U)

FOR THE COMMANDER

~~ L t Col USAF Deputy for Foreign Technology

SECRET AFMlgtC 63 -5655

TABLE OF CONTENTS

Page

Preface

Summary iii

SECTION Indicators of a Recoverable Satellite Program bull bull bull bull bull bull bull bull bull lI middot SECTION ll Recovery from Interplanetary Orbits s middotl

middot middoti SECTION lll P lanetary Land Recovery Range 19

SECTION 1V Planetary Recovery Range Command and Control bullbull 24

Appendix 1 Glossary of Terms 31 -5ibliography bull 33

Distribution bull JS

i

LIST OF ILLUSTRATIONSmiddot l

i

Figure A Lobbing De~p Space Probe 2~

Figure 2 Landing Cor~i-or Widtt 8i

Figure 3 Approach and Re-Entry Trajectory 11~

Figure 4 On-Board Landing Guidance Systemmiddotior Interplanetary Vehicle 1lt

Figure 5 Optimum Planetary Recovery Ar~aamp 22 middot

Figure 6 Recovery Range Command and Control Netwcrk 2amp

Figure 7 Missio~ Control Network bull bull bull bull bull bull lO

Table 1 Unit Error Values along ampn Earth Approach Trajectory bull bull bull bull bull bull bull bull 17

ii

~ bull bullbull middotmiddot bullbull middot ~ ----- _ -middotmiddot~Lmiddot j_c middot middot - -

~- - - ~ ~ ~-

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

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gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

1 Inormatbullon conllictlng w 1th or pertinently affecting that ~onshytained 1 n this publication should be forwarded by t he recip1ent

d1rectly to

AFMDC MDF) Holloman AFB New Mex1co 88330

Ths 1n no way abbrogates or alters responsibthty for sendmg such mformatlOn or any pertinent intelllgence data through already estabhahed mtelEgence collectton channels of the various services cr agenc1es of the US Government

2 WARNING Ths document contains information affecting the national defense of the US within the meaning opound the Ecpionage Law T1~le 18 US C Sections 793 and 794 Its tr ansmission or the revelatton of 1ta contents in any manner to an unauthorized

person is prohib1ted by law

3 Copi es have not been placed in the DDC collection Address

all requests for copies to AFMDC (MDF)

4 Do not return this copy When not needed destloy tn accordmiddotmiddot ance with pertinent sec_unty regulahons

5 his pubHcation has L gte designed to meet tha 3pecific nds oi the re cipient for intelhgence Furthe- d strritctlltHt - 1 the recipient of pats -- the whol middot sulordiuate elements must be based on the specific need middot-to-lmow of the rectpient to perform h i s a ~ 1gned m1ssionn (Authority AFCIN Policy Letter 205 S

da ted J February 1959)

bullbull

~middot-~-=--bullmiddot middot---~middot I bull _ -bullmiddot -~~ -middot1gt_bull_~~-- rmiddot--middot~-~---~--7-~-~~-~--bull middot~-- middot- ~ middot ltII middot

_~middot middot middot middotmiddotmiddotmiddot middot middot middotmiddot- -middot- _ --~ middotmiddot--middotmiddotmiddot middot~ middot middot ___

FOREIGN T ECHNOLOCY REPORT

AFMDC-TR-63-5

(Title Unc lassipoundied) lNTE RPLANETAR Y RE-ENTRY MECHANICS AND

ASSOCIATED RECOVERY RANGE COMMAND AND CONTROL APPLICATIONS

October 1963

Tasks 6 18222 6182(78)

Prepared lgty

Captain William J Barlow Mr Michael E Cason Jr

Th1s 1s a Foreign Technology document prepared and published by AFMDC or use primarily within AFSC It has net been coordinated within AFSC o r the Office o the ACSlntelligence Headquarters US A F and does not -ecessarily rltgtpresent an greed Al~ ForC O posit ion

DEPUTY FOR FOREIGN TECHNOLOGY AlR FORCE MISSIJE DEVELOPMENT c N i iiR

AIR FORCE SYSTEMS COMMAND HOLLOMAN AIR FORCE BASE NEW MEXl-0

AFMDC 63-5655SECRET (This page is unclassified)

-middot-~ middot- -middot-middot~--middot~~ 0 l bull

-

--

- ----- middotmiddotmiddotshy middotmiddotmiddot-middotmiddot shy - shy middot4-middot-middot-~- shy --- middot - shy --shy -- -middot~middot

5poundCREi

(U PREFACE

The inlormation contained in thgts Technical Report has been

prepared primanly for the use of AFSC pe r-sonnel cnQaged in th~

study opound Sovict cpace technology This contribution emphasizebull

11o bulltulated planetary re - ettry and land area recovery m echanics

and will be o intereampt to those atgtalyots c oncerned wlth future

Soviet p lane tary space technoloC)bull ~

(U) PUBLICATION REVIEW

Thia Foreign Techoology document has been reviewed and is

appovecl for difltribution within the Air )lor Syu~erlamp rbullnbull~~d (U)

FOR THE COMMANDER

~~ L t Col USAF Deputy for Foreign Technology

SECRET AFMlgtC 63 -5655

TABLE OF CONTENTS

Page

Preface

Summary iii

SECTION Indicators of a Recoverable Satellite Program bull bull bull bull bull bull bull bull bull lI middot SECTION ll Recovery from Interplanetary Orbits s middotl

middot middoti SECTION lll P lanetary Land Recovery Range 19

SECTION 1V Planetary Recovery Range Command and Control bullbull 24

Appendix 1 Glossary of Terms 31 -5ibliography bull 33

Distribution bull JS

i

LIST OF ILLUSTRATIONSmiddot l

i

Figure A Lobbing De~p Space Probe 2~

Figure 2 Landing Cor~i-or Widtt 8i

Figure 3 Approach and Re-Entry Trajectory 11~

Figure 4 On-Board Landing Guidance Systemmiddotior Interplanetary Vehicle 1lt

Figure 5 Optimum Planetary Recovery Ar~aamp 22 middot

Figure 6 Recovery Range Command and Control Netwcrk 2amp

Figure 7 Missio~ Control Network bull bull bull bull bull bull lO

Table 1 Unit Error Values along ampn Earth Approach Trajectory bull bull bull bull bull bull bull bull 17

ii

~ bull bullbull middotmiddot bullbull middot ~ ----- _ -middotmiddot~Lmiddot j_c middot middot - -

~- - - ~ ~ ~-

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

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AFMDC 63-5655

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gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

bullbull

~middot-~-=--bullmiddot middot---~middot I bull _ -bullmiddot -~~ -middot1gt_bull_~~-- rmiddot--middot~-~---~--7-~-~~-~--bull middot~-- middot- ~ middot ltII middot

_~middot middot middot middotmiddotmiddotmiddot middot middot middotmiddot- -middot- _ --~ middotmiddot--middotmiddotmiddot middot~ middot middot ___

FOREIGN T ECHNOLOCY REPORT

AFMDC-TR-63-5

(Title Unc lassipoundied) lNTE RPLANETAR Y RE-ENTRY MECHANICS AND

ASSOCIATED RECOVERY RANGE COMMAND AND CONTROL APPLICATIONS

October 1963

Tasks 6 18222 6182(78)

Prepared lgty

Captain William J Barlow Mr Michael E Cason Jr

Th1s 1s a Foreign Technology document prepared and published by AFMDC or use primarily within AFSC It has net been coordinated within AFSC o r the Office o the ACSlntelligence Headquarters US A F and does not -ecessarily rltgtpresent an greed Al~ ForC O posit ion

DEPUTY FOR FOREIGN TECHNOLOGY AlR FORCE MISSIJE DEVELOPMENT c N i iiR

AIR FORCE SYSTEMS COMMAND HOLLOMAN AIR FORCE BASE NEW MEXl-0

AFMDC 63-5655SECRET (This page is unclassified)

-middot-~ middot- -middot-middot~--middot~~ 0 l bull

-

--

- ----- middotmiddotmiddotshy middotmiddotmiddot-middotmiddot shy - shy middot4-middot-middot-~- shy --- middot - shy --shy -- -middot~middot

5poundCREi

(U PREFACE

The inlormation contained in thgts Technical Report has been

prepared primanly for the use of AFSC pe r-sonnel cnQaged in th~

study opound Sovict cpace technology This contribution emphasizebull

11o bulltulated planetary re - ettry and land area recovery m echanics

and will be o intereampt to those atgtalyots c oncerned wlth future

Soviet p lane tary space technoloC)bull ~

(U) PUBLICATION REVIEW

Thia Foreign Techoology document has been reviewed and is

appovecl for difltribution within the Air )lor Syu~erlamp rbullnbull~~d (U)

FOR THE COMMANDER

~~ L t Col USAF Deputy for Foreign Technology

SECRET AFMlgtC 63 -5655

TABLE OF CONTENTS

Page

Preface

Summary iii

SECTION Indicators of a Recoverable Satellite Program bull bull bull bull bull bull bull bull bull lI middot SECTION ll Recovery from Interplanetary Orbits s middotl

middot middoti SECTION lll P lanetary Land Recovery Range 19

SECTION 1V Planetary Recovery Range Command and Control bullbull 24

Appendix 1 Glossary of Terms 31 -5ibliography bull 33

Distribution bull JS

i

LIST OF ILLUSTRATIONSmiddot l

i

Figure A Lobbing De~p Space Probe 2~

Figure 2 Landing Cor~i-or Widtt 8i

Figure 3 Approach and Re-Entry Trajectory 11~

Figure 4 On-Board Landing Guidance Systemmiddotior Interplanetary Vehicle 1lt

Figure 5 Optimum Planetary Recovery Ar~aamp 22 middot

Figure 6 Recovery Range Command and Control Netwcrk 2amp

Figure 7 Missio~ Control Network bull bull bull bull bull bull lO

Table 1 Unit Error Values along ampn Earth Approach Trajectory bull bull bull bull bull bull bull bull 17

ii

~ bull bullbull middotmiddot bullbull middot ~ ----- _ -middotmiddot~Lmiddot j_c middot middot - -

~- - - ~ ~ ~-

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

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I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--

- ----- middotmiddotmiddotshy middotmiddotmiddot-middotmiddot shy - shy middot4-middot-middot-~- shy --- middot - shy --shy -- -middot~middot

5poundCREi

(U PREFACE

The inlormation contained in thgts Technical Report has been

prepared primanly for the use of AFSC pe r-sonnel cnQaged in th~

study opound Sovict cpace technology This contribution emphasizebull

11o bulltulated planetary re - ettry and land area recovery m echanics

and will be o intereampt to those atgtalyots c oncerned wlth future

Soviet p lane tary space technoloC)bull ~

(U) PUBLICATION REVIEW

Thia Foreign Techoology document has been reviewed and is

appovecl for difltribution within the Air )lor Syu~erlamp rbullnbull~~d (U)

FOR THE COMMANDER

~~ L t Col USAF Deputy for Foreign Technology

SECRET AFMlgtC 63 -5655

TABLE OF CONTENTS

Page

Preface

Summary iii

SECTION Indicators of a Recoverable Satellite Program bull bull bull bull bull bull bull bull bull lI middot SECTION ll Recovery from Interplanetary Orbits s middotl

middot middoti SECTION lll P lanetary Land Recovery Range 19

SECTION 1V Planetary Recovery Range Command and Control bullbull 24

Appendix 1 Glossary of Terms 31 -5ibliography bull 33

Distribution bull JS

i

LIST OF ILLUSTRATIONSmiddot l

i

Figure A Lobbing De~p Space Probe 2~

Figure 2 Landing Cor~i-or Widtt 8i

Figure 3 Approach and Re-Entry Trajectory 11~

Figure 4 On-Board Landing Guidance Systemmiddotior Interplanetary Vehicle 1lt

Figure 5 Optimum Planetary Recovery Ar~aamp 22 middot

Figure 6 Recovery Range Command and Control Netwcrk 2amp

Figure 7 Missio~ Control Network bull bull bull bull bull bull lO

Table 1 Unit Error Values along ampn Earth Approach Trajectory bull bull bull bull bull bull bull bull 17

ii

~ bull bullbull middotmiddot bullbull middot ~ ----- _ -middotmiddot~Lmiddot j_c middot middot - -

~- - - ~ ~ ~-

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

TABLE OF CONTENTS

Page

Preface

Summary iii

SECTION Indicators of a Recoverable Satellite Program bull bull bull bull bull bull bull bull bull lI middot SECTION ll Recovery from Interplanetary Orbits s middotl

middot middoti SECTION lll P lanetary Land Recovery Range 19

SECTION 1V Planetary Recovery Range Command and Control bullbull 24

Appendix 1 Glossary of Terms 31 -5ibliography bull 33

Distribution bull JS

i

LIST OF ILLUSTRATIONSmiddot l

i

Figure A Lobbing De~p Space Probe 2~

Figure 2 Landing Cor~i-or Widtt 8i

Figure 3 Approach and Re-Entry Trajectory 11~

Figure 4 On-Board Landing Guidance Systemmiddotior Interplanetary Vehicle 1lt

Figure 5 Optimum Planetary Recovery Ar~aamp 22 middot

Figure 6 Recovery Range Command and Control Netwcrk 2amp

Figure 7 Missio~ Control Network bull bull bull bull bull bull lO

Table 1 Unit Error Values along ampn Earth Approach Trajectory bull bull bull bull bull bull bull bull 17

ii

~ bull bullbull middotmiddot bullbull middot ~ ----- _ -middotmiddot~Lmiddot j_c middot middot - -

~- - - ~ ~ ~-

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

__- -- - middot - - --middotmiddotmiddotmiddotmiddotmiddot middotmiddot-middotmiddotmiddot-middot--middotmiddot-- _-

(U) SUMMARY

Purpose

This Technical Report was prepared in accordance with

requirements established by the Foreign Technology Division in i I Tasks 6 182(Z2l (page 28) Planetary Exploration Sy11tem PES)l

Command and Control Application$ at Recovery Range and 618278)

(page 100) Planetary Exploration System PES) Land uea Recovery

Range of the Soviet Planotary E xploration Program TOPS (51

Concluaiona - a Recoverable scientific planetry space miseionamp are

believed to be included in future Soviet pl anning

b Recoverrble planetary apace roisalon pTogramming ia

tied directly to state -of - tlle-art advaJce in the fields of inertial

guidance equiptn~lt tracking techJology power ellui pment et-

c Oplmum lamcl windows for p lanetary apace veUcles

restr1ct and minlmi~e test conditions for advanced technological

concepts

d Because opound the sophistication of these miampBiOnB and the

eaUmated bullgtze and relative inaccuracies of prese1t Sbullwiet 6paceshy

craft guidance control syst~mamp it 1s not ielt ~h2-t gt ucil

recovery will be attempted by the Soviets prior to 1972

AFMDC 63-5655SECRET

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

middotmiddotmiddotmiddot middot --middot --~-~ middot-middotmiddot--middotmiddotmiddotmiddot _

e Only meager evidence exists which would suggest that the

Soviets intend to expand or otherwise improve their deep space

tracking capability evidently being content for the present middotilth

the Crimean facility _l8f

Background High1ights

A comprehensive review of both US and Soviet literature

indicates that recoverable planetary- probes are programmed for

futuro scientific missions The dates involved however will be

dependent on the state-of-the-art advances in such critical areas

as inertial guidaIce tracking systems power supply systems -middot electric propulsion etc Ul

A brtef look at the-8eeP space experiments thus far conducted

by both co~ntriee gives some insight into the complel mission

requirements Problems encountered by the Soviet3 in their deep

space nlissions -ave ~ndomiddot~tedly delayer any time schedult middot~~ich

gtnay have been plaed r 1middote-obull erable planetary misEgt ions Recent

proposals in US technology suggests a 1972-75 time scheduling

for a recoverable planetary vehicle ir this country Th~r tirre

pe_riod however is extremely flexible and again is dependent

upon state-opound~the-art advancements (U)

Because the US does not have a recoverable planetlaquoty vehicle

middot on the drawing board at this time and no information exists il1 the

iV

AFMDC 63-SbSSSECRET

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

__ - _____ ~middot-middot _____ ----------middotmiddotmiddotmiddot-middot-middot

SECRET

area opound Soviet recoverabl~ planetary missions tide report deals

prilnarily with advanced technological theory supported by current

Soviet recovery mechanlcs (81

Dioeussion

The first Soviet attempt to inject a vehicle into a deep space

trajectory occurred in 1960 On 10 and H October 1960 two illbull

f ated Mars probes were laun ehed from TTMTR These vehicles

080 the Category A ICBM for icitial boost and ~ new third stage

or injection into an earth-orbit This new etage was previously

uaobaervcd and haG a thrust oi --65 000 pounds The tint successbull

ful light opound this sy4tem was on 4 February 1961 however a fourth --middot otae used to inject the payload from a parking orbit into a Venus

tra~ectory apparently ailed on that date A second Venus prbbe

attempt on lZ February l961 did achieve a Venutt ny-by indicatios

ltbat all thc strglttamp f~-Llcti ned aOtisf~ctorHy however tbull ~mmbullmi ~ caUcms llrk laili_ Ttitgt ~_ 1peca probe progran~ higt ltonQngtgtCci

in A-uguat and Septernhltt 1962 (3 Venua fai1ure11)bull and October and

November 196~ (Z Mar~ failuru and I succeuful Maa probgt

Tbampre has been no intelligence evidence or official Soviet announce~

ment to indicate that the USSR had any program to launch n recoverable

planetary probe Indaed the engineerins problems o irttrplaabulletary

navigation attitude control communications r e bull enhmiddoty att

AFMDC 63 - 5655SEE RET

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- ~

i I i middotf j i bull

- ---- middotmiddot middot ~ middot _ middot----middotmiddot- --middotshy~ middotmiddot middotmiddotmiddot- ~middot----~ shy

SECRE T

reco very a r e much more complex for s uch a planetary mission

than for near-earth or cislWlar miosions any Soviet prog r am to

accompli sh such a shot would have to be accompamed by a

tremendous sophistication of thei r astro -inertial guidance and

spacecraft control system Such self-contained systems are

necessary for a precisely controtld fly -by opound another planet and

for a well-controUed return to ear th (81

-

Vi

AFMDC 63 - 5655SECRET

middot_ lt bullmiddot 11 - - -~_ - gt middot- bullbull middot~

middot -- ~ bull -- ~ middot- bull bull - bull ( bull bull bull 4 bull bull bull bull bull~

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

____ -middotmiddotmiddot ~ --middotmiddot--middot ----- _ - _

SECTION

INDICATORS OF A RECOVERABLE SATELLITE PROGRAM

freliminary to the launch of an actual recoverable planetary

vehicle will be tests designed to prove the reliability and poundeasishy

bility o equipment for such missions Indicators which would

reflect that the Soviets are pursuing such a program include

I1 Boosted re-entry ballistic missile firings Such

test$ would aubject components and vehicles to the re-entry ~~locitiea anticipated for interplanetary orbits - on the order of

35000-43000 ft aec U) z Test orbit It is possible to launch a recoverable

space probe on a round trip orbit into space and back requiting

only six months (see Fig 1~ The ptbullobe is launched with a

velocity relative to the earth which is normal to the ecliptic

Thus the plane of the reaulting vehicle orh~t Inkes a smiddot ~a~ti~oi

angle with the plane of the ecliptic and the orbit has a line of

nodes through the launching site The other end of the lin of

nodes is through the recovery site wldch is reached six r~onths

later If the same magnitude of velocity were used for tb5s lobbing

shot as is us ed for a zoecoverable interplanetary spalte prob~ the

vehicle would reach the maximum distance of 15 million m llt~s from

1 _

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

UNCLASSIFIED

-EARTH AT LOB RECOVERY

I

LAUNCH

FIG 1 A lOSSING DEEP SPACE PROSE

UNCLASSI FlED

middot--- _ ---- middotmiddotmiddot- middotmiddotmiddot -shy _____ -----middot-4__lt4 bullbull- bull bullbullbull bull 4 -middotmiddot

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

SECRET earth The advantage of such a test orbit ia that 1ts short range

allows a cons1derable amount of data on vehicle performance to

be transmitted back to earth Further the use o a mrectio nal

antenna would not be required thus a breakdown in the attitude

control system of the vehu~le could be diagnosed by telemetry

If such a breakdown occurred at the far greater ranges of an

interplanetary probe it might not be diagnosed inasmuch as the

communications channel depends upon the gain oi the dir~ectlonal

antenna pointed at earth (U)

3 Development of additional deep space i racking

stat1ons The precise orbit deternUnation required for recovershy --middot able middotvehicles will result in the need for additional sophisticated

optical and electronic trackmg facilit1es in the USSR (U)

4 Structural heattng Many problems exist concerning

heatlng of snperorbital re-egttly vPhicle a manit ~ing of tlois

field car ieid ~_ om~ -~gtt ~s to Soviet plan11 for recoverable

planetary missions (U)

S For a true interplanetary round tr~p - ~Ulth as the

example oi the earth to Venus surface to earth surface bull a

t~remendouli ma9 s ratio is required opound chemical prrJpellants In

fact with a respectable speciic impulse of 310 secoud2 and a

3

SECRamiddot

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

~middot-middot-middot- --- ----middot - - ~ - -- ----middot -~ ------middot middot---middot------- -- - ~---middotmiddot-- - - -

SECTION ll

RECOVERY FROM INTERPLANETARY ORBITS

A Introduction

ln any planetary recovery program there are three bas1c

catego1middotie11 of recovery capsules In order of increasing ~ize

weight and complexity they are

o the instrument capsule

the biocapsule

Q the astronaut capsule (U)

The primary reasons for recovering instrumented probes __

include (l) to determine the effect of the space environment on

space-borne equipment (2) to attempt to simplify the equipment

reduce its complexity and hence improve its reliability and (3)

to develop recovery techniques for the benefit of future orbital

glide programs The scientific datg collected in lthe vicinity of

the target plmet will normally have been telemetered ba~k to

earth however a close review of tha actual pack ~glaquo vbullill enhance

the value of the collected information Future exp~imeots will

permit the development of biosatellites with the ass ranee of

regaining the specimens for proper evalu tioo of r~ middot middot~ts

FurthPr a weU-designed space capsule with a low Crmiddotlt may

5

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- -- -middotmiddot- middotmiddot - middot ---- middot ~middotmiddotmiddot --middot-middotmiddot middot~middot- middot middot middotmiddotmiddot--middotmiddotmiddotmiddot --~---middot-middot-~----middotmiddotmiddotmiddot------~ middot- middotmiddotmiddot -middotmiddot~ middotmiddot--middotmiddotmiddotmiddot

become for the astronaut what the parachute is to the aviator shy

a chance for survival in case oi failure of the main vehicle Such

a human middot-carryng biocapaule would have to be equipped with

stabilizers jet and aerodynamic to prevent rotation and

tuInbling (U)

B Ballistic Vehicles

Our discussion will be limited to the recovery of pulely ballistic

interplanetary vehicles inasmuch as that wi1l most probably be the

design of all initial vehicles in a space recovery program The

sphere is the present prototype of a ballistic space capsule which -

can be used to advantage for recoverable planetary missions Of

course every syn1metric body at zero angle of attack is also a

nonlifting (ie ballistic) body and could be utilized for the flight -

Fer a sphere the drag coefficient atays close to unity most of the

time and if i middot~ loses litte middotJeight due tn blai-n t gtalhsti-

coeC bull _ient __- bull ~emuna essentially constant (U)CnA

The tleajectory which a typical superorbital ploneuy) ballistic

-e-entry vehicle follows is defined by

Qgt initial re-entry velocity Vi

Ill initial re-entry angle Y

o ballistic coefficient of vehicle (-c2)

middotmiddot - ~middot middot middot middot ~

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- -middot-~- bull middot----- ----middot---- - - middot - _- ~--------- ~ --- -T------ - --middot--middot~---- - ___

~ bull ltll bull

-- middot - - bullbull --- middotmiddotmiddotmiddotmiddot _ middot---middot bull- - - _J_ __ -middot

Most re-entry vehicle trajectories are treated as a two-body problem

1nvolvins a central forre 1eld with the assumption of a nonr-otat ing

atmosphere and 7ero thrust S tarting with a ltnown initi al velocity

altitude and angle between the velocity vector and the local horishy

pounde ntal trajec tory parameters dete r mined are velocity alti tude

Ugbt path angle t angential acceleration rate of altitude change and

the geocentric angle - all as unctions of the independent variable i time (see Roeences 13 and 15) Aa can be seen these var iables

wtllllrovide an infinite number of re-entry trajectQries until the

actual vehi cle and mission parame~ere are described As aI r I

1 r

practicd matter re-entry anatee will probably be kept under -10deg

W1th initial velocities on the order of 35000 to 430CO Ct sec (U) middotshyI C Re-Entry CorridorI i Well known is the fact thegtt the re-entry angl o determination is I ~ J quite critical U er~ry is oo -hllow the v~~icle i 1t~htlbulltJ

pierce tht ITIsple~ ~bullbull 1 continue out into space or illto a

geocentric orb1t) on the other hand a too-large entry a ngle yields

heating and structural (deceleration) problems wlllch could adver sely

affect the v$bicle Thi~ aivea rise to the concept of the re-entry

corridor which is defined by an undershoot and overanoot boundary

The corr~dor width w is given a11 the diatance betwcaen the conic

per iaecs of the two boundarieu (ice Fig Z) As h app-nt ro1n

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--

- ~-- middot- - middotmiddot middotmiddot--middot middotmiddotmiddotmiddotmiddotmiddot-- -----middot -- ----- -middotmiddot- -middot- _______ ___ _____-------middot- -middot- middot-middot- ---middotmiddot

UNCLASSIFIED

VEHICLE

middot middot

CONiCS

FIG Z LANDING CORRIDOR WIDTH

UNCLASSIFIED 8

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

_ - - middot middot- -- -~middotmiddot __ _ _ _~ middot middot middot _~-middot __ _-- ~ middotmiddotmiddotmiddotmiddotshy_

I

I l

l -1

f I

r ~-i

the preceltHng discussion the Wldth o ( the corridor w lll be a

unction o entry veloclty entzy angle and ballistic cocliicient

(Liltdrag ratios and modulation metbcxs al so influence w for

nonballistic boche=) Consequently for a g~ven velucle and entry

veloc1ty Lhe corridor may be represented by a range of acceptshy

able entry angles Conversely if the range o acceptable eotry

angles as known the corndor width is determined by calculating

the Keplenan perigees and measuring the dHeren c e between

peri gee alti tude- Corridor width as depoundmed by either w 01 Y

may thereioce be used to s t ipulate the maximum tolerable errors -for a guidance syatem U)

D Space Vehi cl Veloc i tiea

The veloci ti es assoc iated with space miesions are

circular

ell ipse bull

parabolic

hyperbolic

where K famp the gravitattonal parameter a charact eamiddot lc constant

16 3 of the attract iog body M (or earth it io 140752 X ) t I e ecZ)

a nd r 1s th e radial distance from the attrac ti ng focur_ All e arh 1

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

__ _ _____ _~ middot _ --middotmiddot~-- ~-

satelhtes possess either circula1middot 01 elliptical velocities In a

parabolic orbit the vehicle 1s entire kinetic energy is used up in

overcoming the central bodys entire potential energy between the

in9tantaneous distance and infinity The vehicle therefore has a

velocity of 0 at infinity -that is after escape In a hyperbolic

orb1t the vehicle has more kinetic energy than necessary for

overconung the gravitational potential opound the central body Thereshy

fore even after escape from the body the vehicle has a finite

remaining velocity which is used to change its orbital energy with

respect to the central force field of the middotnext higher order bull namely

the solar field (U

E Re-Entry Maneuvers

The maneuvers that are required to convert the ~yperbolic

approach orbit which develops as the vehicle begins to respond to

the influence o the gravitational filld of i~s ds~natim to an crbit

which leads to 11afe penetl ~middotion of the plbullll~tary atmosphere will _-

now be discussed (see Fig 3) The criteria for a eatisfactory

landing trajectory include the concept of a landing corridor described

above Sale landing paths are correlated with the configuration of

the spacecraft and with the altitude of the Keplerian perigees for

the approach trajectory This is the perigee which would occur if

I the approach trajectory were not perturbed by the effects of

10

- middotshy

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--

I

l-- ___ ~-~middot--~----~~--c- ~ ---~ --=-middot~---~--~------middot--- middot middot ~ -- -~-~--~ -~~~ ----- --~~- ~ middot-_

______ _ --- -middot--middot- ---middot- middotmiddot-middotmiddot ---middotmiddot__--- middotmiddot - middot

UNCLASS IFI EO

-middot middotmiddotshy

bull

I i ~

-F~G 3 APPROACH middotANO ltRE-ENTRY TRAJECTORY

UNCLASSIF1EO

l J

-shyltmiddot

~ - - - - - -

~-tA~ - middot middotmiddot ~

~j

~ middot----- shy

- -- -middotmiddot - ~ I bull

- - bull -~ bull 1 I gt bull 0 bull bull o 9

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- ---middot middotmiddotmiddot- -middot -middot - - ----middot--middot--- ____ -----middot ___________ __ -----~

I

-~

atmospheric drag Using thiamp correlation the control of the

spacecraft to place it in a landing path will be accomplished 1f it

1s COttrolled in such a way as to _place its Keplerian perigee

wtthin a dea1gnated landing corridor This is accomplished by

maneuvers which modiy the approach trajectory until the orbit

relations which may be measured indicate a value of perigee

_ radius rp and velocity vpbull which are within the indicated

landing corridor It is envisioned that such a 1middoteturn problem will

be accomplished by the application of corrections (coarse and

iine) to the return trajectory as follows

-shy1 First corrections are applied at a point sufficiently

disant to assure_that the trajectory will close with the earth such

as to allow fine corrections at a later time This first correction

i rather simple in application and for middotbest results it will be

i J

pe rormed at the greatEgtst pc sible distn shye h om earth in ce bull bullro

conserve fuel Th~gt -1istane iF hmiddottuted oy the accuracy with which 1 Lhe correction can be computed and applied U)

2 The liecond correction adjusts the approach trajeuroctory

c3usmg it to pass through the narrow landing corridor Thi6

corrlction is applied fa1rly close to earth when precision meas1bullreshy

menta of the trajectory are feasible Without the first correction

~ 12 i

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- bullbull-bull--bullbullbull bullmiddot-~-- middot-Wbullbull bull _ oO

excessive p r opulsion energy might be required to perforrn the

second correction (t1)

3 The third correction is roquired to convert the approach

orbit f rom one which has 1ts perigee in the chosen landing corridor

to one whleh aetuaUy re-enteu the at moephere and i s recover ed

This will normally be accomplished by retrorocket deceleration

but in some caees an atmospheric - induced d rag could be ued (U)

The accuracy o the guidance r eq uired or landing control is

thoroughly r Pvie wed in a NASA r eport by Chapman (Reference )

The consequences of an inaccurate solution to the re-entry homing

problem are considered to be intolerable therefore the uae o shyan opegt loop solution i e r ejectOltl in favor ol a closed loop guidance

bullIaystcm In the latter eystem fliaht condltionbull are conllauauely I

bulljmonitored and correctioxu applied a10 needed thie syatem r equires__ middot

an accur ate predicllon syatem on bord to orpoundt nons c f

the vehicle Correctionbull may be i1tror 1d through applieatlon o

continuoua thrust or t~ough impuleee ~t aelecteci inteJvals (U)

F Re -Eotry Guidance System

A postulated interplAnetary homing re-entry guidance ~chenu

usmg on-board componclts i1 dcpcted in Fig 4 Meaauremente

of ranae r range rate l and the rate opound change of the Une ol

13

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

1

TRAJECTORY COMPUTER

middotp ~shyK II t ltmiddot )

I 1

CO~TROLLER

V a in ltjJ

UNCL ASSI FIED

STELLAR TRACKING SYSTEM

tJ GYRO- I NERTIAL r-shy =-1 ~ REFERENCE

1 _

ampVACTUAL

A T TIT UOE CONTROL OF

PITCH AXIS ROLL AXIS

AV rshy--shy- -0

11---shy - g

MPNEUVER PJltOPULSION

FIG 4 ON- BOARD LANDING GUIDANCE SYSTEM FOR INTERPLANETARY VEHICLE

UNCLASSIFIED

- ~ __shy- -----middot ---middot--middot~middot-middotmiddot shy middot ---middotmiddot----shy-shy-middot~-----shy

~

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

bull bull - -middot -- bull bull bullbull- bull-bullbullmiddot -middot~ middot - bull wbull~ _ _ bull - middot---middot~middot -- poobullo middot middot- middotbull - -middotbullbull ___ _shy oo~Ooo-----middotmiddot

~gtight 0 are required in order to compute the ne iessary flight

parameters Ior deteriIUnation oi the maneuvers required (U)

The optimum time or conversion irom the hyperbolic arc

approach trajedory to a planetary orb1t or land1ng ellipse is at

lhe Kepledan perigee The error in prediction opound the perigee

will be related to the error _in measurement of the orbit parameters

Deviations between the perigee opound the approach trajectory and the

center of the landing corrid()r are expressed in terms opound these

paramete-s by

r 2-2shy

er2

~ r_g_ shyar cg

11-middotmiddotmiddot t~- --l[ (-- - 2 aj__ - - -=-p ~ -- (U)as e eg

Unit contributions to the error in predicted pertget ltiUine a

quantity which may be designated the co-efficient of umt error

his coefficient expresses the error ln measuremet cf a single

flight coordinate which will contribute ar error or urbullmiddot u lgnitud~

in the desired parameter Since the desired parcmeter is the

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

-middot-middot- middot middot middot middot --middotmiddot-middot- middot- ~ --- middot ~_ _ __- ---middotmiddot middotmiddot

perigee distance rp the coefficients for the re-entry guidance

example are

Error in r leaillng to un it error in perigee

16r = 3rpJ r

E_rror in r leading to unit error in perigee

llr __1_ arp ar

Error in 6 leading to uni~ ~rtmiddotor at perigee

For an ear th approach trajectory these coefficients of uni t error - have been calculated and are shown in Table 1 From the data

listed in the table it is apparent that although the requirements

are xacting instruments may be constructed which will provide the

required accuracies to permit ildjuetment of the space vehicles

trajectory i n order to place its middotptrigee within a landing corndor

which is 5 to 10 miles wide provided that a one micro-radian

accuracy may be obtained from optical measurements of a - aubull t

disk Accuracy of instruments to meet this quality has been

predicted in US middotstate-of-the-art journals R~ge rate i

accuracy requirements will be satisfied if the differ~ntiation

intervah of 100 seconds or more are employed As the vehicle

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- 0 - - middot - middot-- middot-middot- ---middot-- -- middot middot middot - --- --- middot- - _ _____ ~__ bull bull bull bull

TABLE I

UNlT ERROR VALUES ALONG AN EARTH APPROACH TRAJECTORY

Error in r leadlng to ~ J ~mile error in rp

Err o r in r le ading to 11 J - rnitco error in xp

rl r0 bull 10r r 25r r0 =SOrr0 = 100 0

00375007501503 mile

-middot 00159 mil 001530015S00156

sec

Enmiddotor in eJeilding to Ol45X l0~9 4ssxto middot 9 197XlO~q tOOX10-9 rad~ec~ J -mile erro r in rp

U = ~tSSlFt n

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

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bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--middotmiddot-- -middot middot --- _ middot ---middot-middot--middot ~middotmiddotmiddot middot-middotmiddot - bull middot middotmiddotmiddot middot-middot -middotmiddotmiddot - ~~ middot - ~ - bull -middot __ bull bull bull -middot bull

SECRET

SECTLON lli

(U) PLANETARY LAND RECOVERY RANGE

In planning future programs auch as recoverable planetilory

probes the results are contingent upon the immeasurable timemiddotmiddoti I phasing oi advanced technology (Ui

bullI

Soviet liter ature doeamp not discuss in any detail the preplanning

for future planetary programs It does however ctearly indicate

that the future of the Soviet planetary reaearch program is currently

dependent upon successful planetary observation probes In

attempting to fulfill this requirement the Soviets have attempted

ten planetary missions of which only two were partiaUy successful

Based on current technology in the arcaa of guidance tracking

b~ing encoun~middot-reci in tler middotjanetcry program it is not believed

that recoverable planetary missions are planned for the 1964-72

time period (U)

By way of ltomparison NASA-advanced studies do not include

recoverable planetary probes d u ling ttus time period lbe laat

planetary system currently on the drawing board is the Voyager

vehicle which is ultimately debulligned to orbit its intend ed )lnet

19

AFMDC 6l-S6S5SECRET

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

2009-068 Document 5

BB 115- Part 1

Missing page 19

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

-- ~ -~middot middot-- ~ --~~~_ -~- ~_ ~___middot _ - ~middot ~middot ____ middot- - ~-L-----=--- ____ bullbull middot--middot

middot- - middot ------ --- - middot -shy

SECR~i

as an observation probe with the future pouiblit y of ejecting

capsules or planetary impact (tJ)

F o r tile purposes o this repo rt it ia aaaumed that tcientiic

intereat in the plane t will ccntlnually Increase and a recoverable

planetary probe will ulbmately be developed by the Sov iott The

need for a land recovery area will be a natural conuquence of

~~ueh a prog-rarn (U

A5 pointed out U a previoua AFMDC technical report

(AFMDC-TR-63-l) conceruing poetulats4 land recovery arelt~La or

lunar vehicl es the beat suited locale or recovery within the USSR

-This conclusion was reached by reviewinamp the oUowLna ltllndard

site selection c riteria and ua ine it aa a worldnamp baee

l Security

2 Safety

3 Terr ain

4 Climatology

logistic Suppo rt

6 Reltovery CommiLlld and Control Notwo rbull

7 Search u d Recovery NetwOrk

Thue palamatera althouth crU1ltal to the tuccu l roy

recoverable mi5sion a r e euentially controlled by the bull bicle

zo

AFMDC 63- S6SS SECRET ~

-middot =middotmiddotmiddot bull () - ------

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--

- _ __ __~

middotmiddot- middot -middot ---middot- middotmiddotmiddot--~ --middot- middot --- --~ ----middot --___________-middot--middot____ ~-middot middot-middot -

design characteristics and the geometrical constra1nts of the entry

mission Without these parameters it 1s impossible to accurately

pred1ct a land-based aim poin t (U)

As discussed in Secnon II 1t is belleved t hat the Soviets w1ll

m~tlally utilize a pure baLli stic recoverable planetary probe Use

o uch Vltlgtid~ ltt]IJ~ cae Wlcr~alr ~mrr ~onil9r gtnto the

earth 15 atmosphere and places final unpact accuracy in the hands

space traclung stationQ Theae stations w1H be responsible for

determ1mng guidance corrections necessary prior to earth entry

on th e final leg of the trajectory ~

Fig 5 points out those areas of the USSR wbch most closely

satisfy all standard land recovery range site selection parameters

wllhout respect to postulated gu1dance accuracies This figure was

originally derived ior a recoverabl e lunamiddot veiucle wc middotmiddoth con~l H middot ~)~

entry thus the t hee tmpact amiddot~- J lt is believed that in the 1972shy

era or before If technology perm1ts the Sov1ets will have tracking

accuracies and propul sion systems capable o ach1eving _entry 1nro

the tarser range area as depicted in the figure As pointed out i n

AFMDC-TR-63 middot 1 the optimum recovery area lies within the

primary zone and constitutes an optlmum ~ po1nt for recoverabllt

planetary probes as well as lunar return vehicles ~

21

AFMDC 63 - 5655SECRET

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

---~----~--~- ~ middot- ---1---- --- - ~ ______middot_ ~~__~--~-- -middot_----------- middot middotbull ~ middot------=----~-~ - ~ - )-middot4middot - _ __ __ __ ~ ---middot middot-- ----middotmiddot--

rl i i

i i

~ jJ - I

I N

middot lt

I I gtgtI

~ () ltshy

Ul o-U

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- ___ _ -- middot- middotmiddot- middot ---middotmiddotmiddot-~middotmiddot- - middotmiddotmiddotmiddot - -- - middot-middotmiddot----middot ~- ~ middot -middot middot middot -middot-middot - middotmiddotmiddot-- shy

Due to the gu1dance inaccuracies antic1pated during initial

interplanetary flights provisions or emergency l anding sites

should also be conside red Recovery within any land mass 1n the

Soviet Union or Soviet Bloc countries could provide relahve

security to the mission and in most ca~es still be located by

mobtle recovery forces Water impact an additional hazard

should also be considered during early missions The recovery

vehicle s~ould be capable of surviving a water impact in case of

emergency and st ill provide adequate 6afety to itt~ scientific

payload ln addition recovery for ces shou~d be capable and -middotshydeployed poundor water retri eval as well as land recovery ]iii(

AFMDC 63-5655SECRET

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

J ~--- - middot- middot-middot~ ~- __middotmiddot ~~- ~ -~~~~---middot--~- middot-~--~-- - ----- I -- bullbullbullmiddot-~______~_____ ------ -- _ - -~ ~- middot-middot __--~--- =--- ~ ~

- ---40 middotmiddotmiddotmiddot-middot middot middot middotmiddotmiddotmiddotshymiddotmiddotmiddot middotshy middotmiddot ____ ____ ---~ - shy ----------middotshy _

SECTION IV

(U) PLANETARY RECOVERY RANGE COMMAND

AND CONTROL

As previously d i scussed the engineer-ing probl ems connected

I with recoverable planetary flight are much more complex than

I those encountered 1n r ecoverable earth orbit programs When

discuss1ng recovery 1middotaoge programming however the command

and control aspects need not be more complex in deSlgn (U

A8suming that the SoviPtS will use a ballistic type re-entry

verucle during t~e initial phases of the program the current

command and control network should prove adequate for assuring

timely recovery Fig 6 shows the command and control network

which is believed used by the Soviets during current earth orbit

recoverymiddot exerc1ses 85

Tbe existing structu_r e enalJles de ~obull t to amiddot- esign

s1mplicity combired with ~oerational effectiveness Th1s

system is believed to make use o a recovery range conbull-olle1middot

who exercises overall control of all searchrecovery rrces in

the planned impact -rone and at the 10ame time receives computed

tn~pact data and fir11t echelon directions from the misotou control

i

center

SOX and 3 E013526

24

SECRET AFMDC 63-5655 middot

shy

~

bull

~(middot- I

I

- shy --1 bull I ~

shymiddot middot

middot

-

- ----- ~-

~ -

shy

~

bull

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- - middot- - -- ----- ---middot------middot-- - ~middot-

ICOMPUTpound 0 POSITION OATA I

RECOVERY RANGE

CONT ROLLER

t

RECOVERY SUPPORTishy

aASES

SEARCH AIRCRogtIT

HELICOPTER ltEC middotERY

TEAMS

BEACON

TRACI(ING STATIONS

--shy

GROUND MOBILE RECOVERY

TEAM S

shy

F IG 6 (UJ RECOVERY AANGE COMMAND AND CONTR( _ NETWORK

r-rHi 63-5555

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

--

___ middot-- middot- - -- middot-- middotmiddot------middotmiddot-middot middotmiddot --- --- middot-middot-middot -~middot-middot middotmiddot middot _

SECR El

SOXl and 3 E013526

Thu technique wo11ld prov1dc the central controller

w1th t imely dtrecttnnal information and thut enable him to dispatch

s11arch recovery [orces to the general recovery area o~lmoampt

Although the recovery o planetary p robes is not expected to

alt~r the cur r ent r ecovery range command and contrul atzuctur c ~t

will pro~bly introduce some complexity tnto the opcrat~onal aspc-ts

o f recov~t~y As d~scuased previously tho tracking and gutd ance

lDaccuracles 1nhereot in a ballistic planetary re-entr y system are

11uch thampt the proposed cecove ry ~one will probubly be increaaed b

nelt This will constitute a requlrement or additional penonnel

equipment and s taging a r eabull in o r der to trOvldo m o ro broad

launch and r eco IC ry 01 rbulllt~nctary probes tnltial deployment

ol the recolery o rces will also be governed by the au1dnce

accuracies achieved throughout the eagttre Hgbt Th cecovery

(cyces sbouJd be moved into the preplanned recovery one no

later than o oe weellt prlor to the ctculated re-entry da~- Check shy

oul o the rec~ve y r a nge command a nd control newo-lr coald be

~6

AFMDC 63- 5655SfCRElshy

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

p _ - - - middot middot - bull middot-middot - --- middot- - middot middot middot middot middot - middotmiddot bull bull bull - - - - bullbull _ _--- - - ~middot middot ~--- ~-

SEC RET

accomplished during the interim period with redeployment

carried out i ne cessary (U)

Eve1~ though the use opound a lnllistic re-entry vehicle allcv10LCS

the need lor range con trolled terminal guidance applications

du r ing re ~entry it places extreme accuracy requuements on

the deep spa ce tracking facilities middot As pointed ou t earlie- r final

impact accuracy wul be dependent upon the tracking and guidance

~ccurar1 e s achievable during the final leg o planetary flight (U)

Soviet literature has on occa sion credited the deep space

tracking facility in the Crimea with the capability of tracking

planetary probes Although the tracking accuracy cf equipment

locate d at this facility is currently unknown some insight may

be gleaned from Soviet releases at the July and October 1961

international scientific meetings in Washington D C They

reportedly gave the fcllvWn~ data n tt~ f ovi ~middot intei)hnetprmiddot

trttcking radar

Antenna type - Tracking dish

Radio f requency - About 700 me s

Power flux density - ZSO rowsteradian

Oscillator atability - 1 part in 1 billion

Duty factor - 05

Pulse l e ngth - 64 or lZS milliseconds

27

AFMDC 63-5655SECRET

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

-middot- - -middot--- --middotmiddot --- -- --middotmiddot--middot - ~-- ---middotmiddot-middotmiddotmiddotmiddot - middot- ------middot - middotmiddotmiddot--middot--middot- middot

Tlansmit polar i zation - Circular

Recetve polaraation - Linear

Power tncident on surface of Venus at very center of

beam 11lummation - 15 watts

Although these characte ristics cannot be equated to any one

Soviet radar i t is believed that the Sovietamp have three deep

space trackiltg radars with the necessary large tracking dishes

(nominal 72 1 one each located at Moscow Novoaibusk and in

the Crimea 81 The use opound the~P radars could provide the Soviets with deep

space position information but are not presently beheved capable

of accuacies necessary for recoverable planetary vehicles (S1

Additional information suggests that the Soviets could be ___

attempting to establish tracking lacilities in both Chile and

Indonesia lf such a network could be established it would probably

cloely approximate the US Deep Space lnPt-ulnentatior Facl t~~

DSIF) with stations at J~L G-gt1ds~- bull Facility California

Woomera Australia ltLnd JohltLnnesburg South Africa This

middotwould then provide the Soviets with worldwide tracking coverage

usefut in beth near and de ep space missions 8r

If uch a space tracking network is intended by the Soviets

all trltLcking inlormation vould probably be fed into a central data

reduction center similar to the US Goddard Space Flight Center

28

AFMDC 63-5655

SECRET

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

TELEMETRY MONITORING RECOVERY

SUPPORT STATIONS BASES

l SEARCH l Y

AIRCRAFT FORCE

_j r RE-ENTR

T~PCKING STATIONS

l t1A~ )

S

BEACf~lt

HELICOPTER TRACKING ~1AiiONSRECOVERY (RECOVFRY)

FORCES

GROUND MOBILE RECOVERY

FORCES

middot-- --~--- -

- middotmiddot___ -- -shy middot - - middot--- middotmiddot- --middotmiddotmiddot ---middot- middotmiddot

TRACKING

RECOVERY NETWORK NETWORK

OEEP SPACE

RECOVERY TRACKING STATIONS RANGE (AAOIO OPTICAL)

CONTROl-LER

MISSION CONTROtLER

tOATA REDUCTIO CENTER

-middotmiddotmiddot-middot

FIG 7 (U) MISSION COMMAND AND CONTROL

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

~--middot - -- middotmiddot - -- ----- middot~middot- -- - -- middot---middotmiddotmiddot -middot----- ---__- -middot middot---middotmiddot

APPENDlX 1

GLOSSARY OF TERMS

A - reference frontal area

C - velocity reduction factor

c - drag coefficient0

e - eccentricity

g - acceleration due to grav1ty of body

K - gravitational parameter

M - n gta55

r - radial distance (range

r - radius of plane~0

r1 - radial distance from principal focus

rp - radial distance to periapsis

r - range rate

v - scalar velocity

v - vecto velocity

vp - velocity at periapsis

vi bull initial re-entry velocity

W -weight

w bull co~ridor width

y initial re bull ntry angle (light path angle)

31

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

- -_- bull _ bullbullbullbull middot- middotmiddotmiddot-- bullo bullbullbullbull _---bull middotbull -bull-abull--bullbullbullbullbull bullbull-middot----- bullmiddot-- bull bull

8 bull line o ~ight angle angular distance along trajec~ory middot measured at principal focus from a refe r ence direction

to posi tion vector of the vehicle

ti bull turning rate of the line of sight

bullbull elevation angle coflight path angle measured fr om local hor irontal where horizontal is defined as the plane normal to the geocentric position vector of the vehicle)

i j

-l

i i 1 I middotj

I 1 I I

i l

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

(U) BIBLIOGRAPHY

1 A Brief Look at the Soviet Space Program JSl-SB-63-5 )8(

2 A Recoverable Interplanetary Space Probe Report R-235 Volume 1 Instrumentation Laboratory MIT July 1959 U)

3 An Analysis of the Corridor and Guidance Requirements for Supercircular Entry into Planetary Atmospheres 11 by Dean R Chapman NASA Technical Report R-55 1959 (U)

4 Comprehensive Analysis of Soviet Space Program AID Report 61-72 Science and Technology Section (U)

5 Life-Support System for Mars Journey SpaceAeronautics September 1963 U)

6 Lunar Exploration System (LES) Land Area Recovery Range and Associated Command and Control Systems AFMDC-TRshy63 -1 f6f

7 Manned Entry Missions to Mars and Venus by Robert E Lowe ard Robert L Gervais American Rocket Society Journal Volume 3Z Nr 11 November 1962 (U)

8 Nilv1gation and Guidance in Space lly Edward V B Stearns-~ Prentice -fllllnc Book Company 19h3 (U)

9 NORAD WIR 146gt 181

10 NORAD WIR 663 bull (81

11 NORAD WIR 2562 ~

12 Plane tary TOPS FTD Foreign Space Programs Analysis middot Office 20 September 1963 ~

13 Principles of Atmospheric Re-Entry by Theltrlrote A George ARPA November 1961 (U)

14 Space Flight by Kraft Ehriche Volumes I and~ Vat_ Nostrand 1962 (U)

33

AFMDC 63-5655

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

middotmiddot ------ -- --- middot middot- -middot middot middot-- ---middot~middot -middot- ~-middot middotmiddot middot middot middot middot middot middot --- ---middot---middot-middot- -middot-middot~middot- middot- middotmiddot--middotmiddot- middot

15 Structural Requirements of Re~Entry rom Outer Space by Charles E Hanshaw et al W ADC Tech Report 60 ~886 Boeing AirpllnC Company May 196L U)

16 Survey of Atmo6phere Re~Entry Guidance and Control Methods 11 by R C Wingrove AlAA Journal September 1963

(U)

17 Tracking and Command of Aerospace Vehicles lAS Proceedings of the National Symposium San Francisco

19 ~21 February 1962 (U)

I middotI

1

1

AFMDC 63~5655

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

I AnlluC roLJOAi A-e I o _j i - - - i ii WHitE SANDS MISSilE IAMGpound --- ~middotmiddot middotmiddot middotmiddot--middotmiddotmiddotmiddotmiddotmiddot--middotmiddot~middotmiddot middotbullbullbullbull tlmiddotmiddotmiddotmiddotmiddotmiddotmiddotmiddot u bullwbull bull bull 1bull bull bull --

gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

-~~-- --- ----middot - ---middot~-middot_ - - -middot-~ ---middot ~-- --- middotmiddot ~middot

-~---- - _- -- ------------middotshy- - middot--middot---middot

DlSTIUBUTlO~

ICopy Nr I

OPR Org~niration 01-0Z

TDEVl 03-04FTD TDFS 05 -09FTD TDBDP 10 - 11FTD scFT 1middot13AFSC BSF l4 - 1S BSD SSFT l6 -l7 SSD SF ASD ESY

lS - 19 20-Zl

ESD AMF ZZ-23j AMIgt RJY Z4-Z5I RAJ)Gy AFWL

WIF Z6-Z7 FTY ZS-9

AFFTC MTW 30 -31i AFMTC

imiddotl PGF 32-33APGG AEY - 34 AEDC Mt)OPMaj B racken 35f I AFMDC ADOi AFMDC

36 MDNH Imiddot AFMDC I

I II 1 gt i I l I I I

AFMDC 63-5655

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~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

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gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC

bullD bull bull bull bull _tOtbull bull bullbull bullbull bull bullbullbulloD bull bull bullbulloOt DtOtooo~a taoatebullbullbullbullbullbullbull bull bullOI 0 1Oti i DI G I 0 1 t O t bullbull oa l Oiet atOI O l0 I a t t a i O IOt l le l i

~ i i ~ bull

bullbull 0 I o i N E W [j X I C 0 lbullli JJl lrl i bull i i ~ i ~ i bull i i

i i ~ i i 40 ~ I ~ SOCORRO bull ~~ f T ~ i IOD I i 1 i

~ ~ Z bull ALAMOGORDO

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gbull i i i RIO GRANDE

AREA MAP SHOWING LOCATION OF AFM DC