Neelam Patel David Wade Brian Reyes

TARC ALPHA TEAMPRESENTS:

BLACK & YELLOW

Problem StatementTeam Roles and Responsibilities TimelineBackground Project ScopeResearchExploring PossibilitiesDesign SolutionConstruction PhaseDemonstration of PrototypeTesting PhaseRefinementsLessons LearnedConclusion

TABLE OF CONTENTS

The Team America Rocketry Challenge requires us to design, build, and fly a rocket that can carry an egg

at least 750 feet into the air within the duration of 40 to 45 seconds and land it safely using a specifically

sized parachute.

PROBLEM STATEMENT

TEAM ROLES AND RESPONSIBILITIES

Team Role Team Member

Responsibilities

Leader David Wade Responsible for keeping group on track Review work done by team members Keep track of day-to-day activities Resolve conflict Provide nourishment

Scribe Neelam Patel

Write in project notebook Revise documents created by facilitator Check group website and email daily for updates

Facilitator Robert Silva Create documents for project portfolio Keep in contact with members to determine status of project Be a good listener for the group during discussions

Timekeeper Brian Reyes Create timeline with help of group Fills in planned/ actual dates into timeline Ensures group follows timeline Enforces deadlines set by group Fill in planned/actual chart daily

TEAM ROLES AND RESPONSIBILITIES

TIMELINE

Largest rocket contest in worldDesigned to encourage students to study math and

science and to pursue a career in aeronauticSponsored by Aerospace Industries Association &

National Association of RocketrySeveral corporate, educational, and government

partners National Association of Rocketry (NAR) GE Boeing IBM

Provide future employees

BACKGROUND

Adhere to TARC guidelines750 Feet LaunchAirborne for 40-45 secondsSafe Landing Rocket Weighs max 1000gPowered by motors with ≥ 62.5g of propellant each (No more than 125g combined)

Parachute (15 in diameter) sole recovery deviceEgg weight between 57-63g (45 mm diameter)

SCOPE

Competition date: May 14th

Duration of project: 100+ hoursResources

Calculus Textbook Internet Mrs. Brandner Mr. Pritchard

SCOPE

Approximate Budget: $500Entrance Fee: $105Useable Stores:

Online Web Stores Hobby Lobby

Deliverables Technical report Engineering Notebook PowerPoint Prototype

SCOPE

RESEARCH

RESEARCH

Pros(+) Cons(-)Payload system present Not enough dimensioning

Feasible recovery system Egg compartment too complex

Egg safely stored No launch lugs

Shows connections between body tube Does not show how altimeter is attached

All criteria met No specific engine model

Aerodynamic Nose cone oddly shaped

DAVID’S SOLUTION

Pros (+) Cons (-)Appropriate height Fins are too big/ no dimensioning

Accurate dimensions No payload system indicated

Proper Nose Cone Shape No connecting system from top and bottom sections of rocket

Possible Choice for Recovery System

Does not show how egg will be stored safely

Appropriate amount of launch lugs Does not show how altimeter will be attached

Ease of construction Fin shape is inappropriate for the large rocket

BRIAN’S SKETCH

Pros (+) Cons (-)

Well dimensioned Fins bizarrely shaped

Labeled rocket parts Egg capsule not attached to rocket

Proper Nose Cone Shape Not enough launch lugs

Criteria met Altimeter placement not feasible

Aerodynamic Parachute is complex

Ease of construction Recovery system unfeasible

NEELAM’S SKETCH

Pros (+) Cons (-)

Good recovery system Unnecessary extra shock cords

Accurate dimensions Only one separation

Ease of construction Missing dimensions

Reasonable fin choice Parts are unlabeled / parts missing

Shows connection of separate parts Confusion of placement of parts

Reasonable place for egg capsule No motor

ROBERT’S SKETCH

FIN SHAPE SELECTION

Simulate test flightsTesting different engines

C11-3 D12-3 E9-6 F20-6

E9-6 Height: 756.45 ft. Flight Duration: 39.23 seconds

ROCKSIM

MOTOR SELECTION

  Specifications Alternatives Material Appearance Easy Launch

PrepInexpensive Safety Accuracy Durability Reliability Total

Design 1(David)

2 3 2 2 1 3 3 3 19

Design 2(Neelam)

3 2 3 1 2 2 2 3 18

Design 3(Brian)

1 2 3 2 2 2 2 2 16

Design 4(Robert)

2 2 2 2 3 1 2 3 17

SELECT AN APPROACH

Rating Scale1- Does not meet expectations 2- Meets expectations 3- Exceeds Expectations

FINAL SKETCH

DESIGN SOLUTION

FINAL SOLUTION (EGG CAPSULE)

Foam

Nose Cone

Balsa Donut

Padding

Egg

Body Tube

 PART

PART DESCRIPTION QUANTITY UNIT COST TOTAL COST

Body Tube 18” length by 1 5/8” diameter,

pack of 6

1  $12.91/pack

 $12.91

Motor Estes, single-stage,E9 – 6, pack of 3

2  $19.99/pack

 $39.98

Motor Estes, single-stage,D12 – 3, pack of 3

1  $14.99/pack

 $14.99

Motor Coupler 4” length by1” diameter

1  $1.80/pack

 $1.80

Nose Cone/Egg Capsule Black, cone shaped plastic, 8.2” length 2.32” diameter

1  $14.57/unit

 $14.57

Altimeter Perfectflite ALT15k/WD 1 $55.00/unit $55.00

Parachute 15” round nylon cloth 1 $7.99/unit $7.99Shock Cord Rubber, ¼” thick x 36” length 1 $0.36/foot $1.08

Fins Balsawood board 1/10” thick, 4” x 12” 2 $3.50/board $7.00

Foam Egg-shaped, 2.12” length, 3.07” diameter, pack of 4

1 $2.77/pack $2.77

Balsawood 2” x 2” x 12” 1 $3.99/board $3.99Basswood 3/16” x 4” x 24” 1 $3.49/board $3.49Eyescrew Length 0.78”, inside diameter 0.19”,

outside diameter 0.4”, thread length 0.28” 1 Already owned -

Engine Hook 0.02” thick, 4.22” length, pack of 2 1 $1.22/pack $1.22

Styrofoam 6” diameter x 1” thick 1 $1.75/wheel $1.75

Recovery wadding 75 sheets of fire proof recovery wadding 1 $4.99/pack $4.99

Yellow Spray Paint Rust-Oleum Specialty 11 oz. Yellow Fluorescent

2 $4.98/can $9.96

Black Spray Paint Rust-Oleum 12 oz. Gloss Black Universal Spray Paint

1 $6.50/can $6.50

Painter’s Tape ScotchBlue1 in. x 180 ft. for Delicate Surfaces

1 $5.87/roll $5.87

 TOTAL COST

     

$195.86

BILL OF MATERIAL

Design Changes Existing parts

BUILD PROCESS

CONSTRUCTION

•Egg payload section•Altimeter section•Engine Mount•Fins•Shock Cord/Parachute

PROTOTYPE ASSEMBLY

PROTOTYPE PARTS

ALTIMETER ASSEMBLY

ENGINE MOUNT ASSEMBLY

EXPLODED VIEW

CALCULATIONS

Height

Check if rocket meets TARC Guidelines Single Stage rocket Approved Motor Engine Weight Parachute Altimeter

Pass/Fail Result Pass= Meets guidelines Fail= Does not meet guidelines

QUALIFICATIONS

Randomly Dropping Egg Capsule 5 from balcony 5 from test flights

Graded based on scale 1- No Damage  2-Slightly Cracked  3-Cracks take up over 50% of eggs, No oozing  4-Cracks take up over 50% of egg, Oozing present  5-Completely Smashed

Any score above 2= fail

SAFETY

Test rocket if operational Rocket can launch Recovery System Activates Weight Chamber Removable altimeter No parts fall off

Pass/Fail Result Pass= All aspects function Fail= one or more aspects fail to function

FUNCTIONALITY

Launch rocket for air time Start stopwatch the moment rocket launches End when rocket touches the ground Average all trials

Pass/fail criteria

FLIGHT DURATION

Desired Range (pass)

Undesired Range (Fail)

Launch rocket for height distance measure Collect altimeter readings Average all trials for final height

Pass/fail criteria

ALTITUDE

Desired Range

Assessment of altimeter’s functionality Manually change air pressure Listen for a reading

Pass= reports change in air pressureFail= no report or no new report

ALTIMETER

All qualifications were met

QUALIFICATION TEST

Qualifications of the Rocket

Criteria Pass Fail

Single Stage Rocket X  

Approved Motor X  

Engine Weight X  

Complete Rocket Weight X  

Parachute X  

Altimeter X  

Initially, problems with recovery system and falling parts After adjustments the rocket is functional for last two

launches.

FUNCTIONALITY TEST

Functionality of Rocket  Trial 1 Trial 2 Trial 3 Trial 4 Trial 5

Pass Fail Pass

Fail Pass Fail Pass

Fail Pass Fail

Recovery System

X     X   X X   X  

Launch X   X   X   X   X  Variable weight

chamber

X   - - - - - - - -

Removable

Altimeter

N/A   X   X   X   X  

No Parts Falling Off

X     X   X  X X  

Overall X     X   X X   X  

Functioned satisfactorily 60% of the time

FUNCTIONALITY TEST

Some crackingAdjustments made

SAFETY TEST

Safety of Rocket  Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trail 6 Trail 7 Trail 8 Trail 9 Trail

10Mean Median

Condition of the Egg

3 2 1 1 1 1 5 3 1 1 1.8 1

 Rating Scale  

 1- No Damage

 2-Slightly Cracked

 3-Cracks take up over 50% of eggs, No oozing

 4-Cracks take up over 50% of egg, Oozing present

 5-Completely Smashed

Flights averaged around 20 seconds

FLIGHT DURATION TEST

Flight Duration of Rocket  Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Mean Media

nFlight

Duration18 sec 15 sec 23 sec 21 sec 25 sec 20.4

sec23 sec

Altitude averaged around 400 ft.

ALTITUDE TEST

Altitude  Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Mean

Altitude

n/a 254 485 360 516 403.75

Altimeter is functional and gives readings

ALTIMETER TEST

 AltimeterTrial 1 Trial 2 Trial 3 Trial 4 Trial 5  

Pass Fail Pass Fail Pass Fail Pass Fail Pass Fail  

X   X   X   X   X    

FLIGHT #1 (PROTOTYPE #1)

Slight damage noticed to body tube directly beneath egg capsule

Added duct tape to reinforce

REFINEMENTS

FLIGHT #2 (PROTOTYPE #2)

Trimmed egg capsule and body tubeAltimeter mount shorterSecured engine mount with lots of glue

REFINEMENTS

FLIGHT #4 (PROTOTYPE #3)

Not much changedPaintedDamage repairs to fin

FINAL PROTOTYPE

Math & Science principles of rocketsImportance of model launchesEarlier Testing to account for errorTime Management was better

LESSONS LEARNED

Refined DesignAverage Height: 400 ftFunctionality Success: 60%Fail TARC qualification flightStronger Motor

CONCLUSION

THANK YOU FOR YOUR TIME