Class #10 E6B Flight Computer

Content of lesson

Time-distance problems Fuel consumption Statute-to-nautical conversion True Airspeed True Altitude

HOMEWORK

JEPPESEN PRIVATE PILOT MANUAL CHAPTER 8 SECTION C

PHAK 15-11 TO 15-16 NO ASA/GLEIM QUESTIONS ON

THE NEXT TEST HOWEVER STUDY CHAPTER 9

(ASA 9-14 to 9-36) and do homework

SLIDE RULE MATHEMATICS

MULTIPLIER OVER 10 (found on INNER SCALE) = PRODUCT OVER OTHER FACTOR

2 x 4 = 8 MULTIPLIER 2 (OVER 10 ON INSIDE

SCALE) FIND #4 ON INNER SCALE AND ANSWER OR PRODUCT ON OUTERSCALE

SLIDE RULE MATH

DIVISION DIVIDEND OVER DIVISOR =

QUOTIENT (found OVER 10 on inner scale)

8 / 4 = 2

PROBLEMS

13 x 7 = 300 / 15 = 19 x 5 = 345 / 15 = 137 x 7 =

PROBLEMS

13 x 7 = 91 300 / 15 = 20 19 x 5 = 95 345 / 15 = 23 137 x 7 = 959

Converting Minutes to Equivalent Hours

Velocity

Velocity = Distance / Time Distance = Velocity X Time Time = Distance / Velocity

When you use time make sure you convert the minutes to equivalent hours

E6B Please note that the stationary

scale is the main scale (distance) while the inner scale is denoting time.

Time, Ground Speed, Distance problems

On all Time, Ground Speed, Distance problems the large triangular index is either set opposite Ground Speed or will position itself opposite Ground Speed.

Distance and time are always opposite each other.

Time, Ground Speed, Distance problems

Time, Ground Speed, Distance problems

Given a speed of 120 knots, Distance of 200 N.M. what is

the time? 1:40 or 100 minutes V=d/t (ground speed = distance

/ time T=D/V = 200/120=1.67=1:40

Time, Ground Speed, Distance problems

Given a time 2 hours, Distance of 200 knots what is the speed?

100 knots

Time, Ground Speed, Distance problems (4)

Speed = ?, Time=1:30, Distance=165 n.m. Speed=132 mph, Time=?, Distance=198 mi S=166mph, T=1:50, D=? S=?, T=2:10, D=206 mi S=190kts, T=?, D=95N.M S=130MPH, T=1:10, D=? S=180MPH, T=?, D=330

Fuel consumption problems

Fuel rate is read under the triangular index (usually gal/hr).

The outer scale is equivalent to the fuel used

The inner scale is flying time GPH=#GALLONS / TIME Calculate the same as time

distance speed problems

Fuel Consumption Problems

Fuel Consumption Problems

Fuel Rate=13 gal. Per hour Time=1:30 (90minutes) Find: Total fuel:? 19.5 gallons

Fuel Consumption Problems

FR= FUEL RATE, T=TIME, TF=TOTAL FUEL

FR=18, T=1:50, TF=? FR=14, T=?, TF=21 FR=? , T= 2:30, TF=25 FR=13 , T=?, TF=40 FR=6 , T=3:30 , TF=?

Statute to Nautical Mile conversion

True Airspeed

Density Altitude

True Airspeed &Density Altitude

Pressure Altitude, Temp., IAS 8000ft, -10C, 120kts 9000ft, +10C, 140mph 5000ft, +30C, 120mph 7000ft, -20C, 150 kts 12000ft, -10C, 180mps

Answers

TAS, Density Altitude 133 kts, 6900ft 164 mph, 10,500ft 135 mph, 8000ft 160 kts, 4500ft 216 mph, 12,000ft

Temperature Conversion Scale

Bottom of E6B -10 C = what in F -40 C = F 30 C = ?

U.S. Gallons to Imperial Gallons

On APR Airlearn E6B Outside Imperial gallons

between 18 and 19 Outside U.S. gallons near 22 On ASA different

True and Absolute Altitude

Given: Pressure altitude 12,000ft

Indicated Altitude 11,500 (OAT) -10C Terrain Elevation 10,500 What is the absolute altitude

True and Absolute Altitude P208

True and Absolute Altitude P208

What is the absolute altitude 500ft 950ft 1000ft 1500ft To figure out you need to figure

out True altitude first

True and Absolute Altitude P208

True Altitude = 11,450ft Absolute altitude = 950 ft

Fuel Reserve BBCC/FAR’s

BBCC = 45 minutes day or night

FAR = 30 min day, 45 min night