BYU Rocket Team 2009-2010

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Special thanks to:Boise Discovery Teens ClubJeff SmithDr. David Fullwood

Outline About the Competition About the Rocket

Nose Body Fins Flight Plan

Electronics Deployments Simulations

Motor Recovery Plan

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The Competition Intercollegiate Rocket Engineering

Competition (June 17, 2010) Sponsored by ESRA Goals:

Design, build, and launch a rocket to reach 10,000 feet AGL

Minimum 10-lb payload Closest to 10,000 feet wins Rocket must reach at least 5000

feet and not exceed 12,000 feet to receive points for altitude

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Last Year One successful Launch Learned lots of basics Most components were pre-fabricated

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This Year Still learning the basics Manufacturing most components “in house” Building off of last year’s design

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Design OverviewNose Cone

Body – 1: Payload

Body – 2: Chute Storage

Body – 3: Motor and Fins Coupler 3:

Tail Drogue

Coupler 2:Altimeter

Coupler 1:Nose Drogue

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Nose

Design Ogive shape will provide the best

aerodynamics for our anticipated velocity (760 ft/s)

Contour based on last year’s design Manufacturing

Created a wood form on a lathe Currently preparing form for pre-

preg layup Integration

Coupler 1 will be rigidly fixed to the cone

Nose cone chute will attach to the nose cone bulkhead

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Body: Part 1 – Payload Bay

Body section will fit on to coupler 1 and be rigidly fixed to coupler 2

Payload Requirements Must weigh 10 pounds (competition rule) Must be fit inside body tube (design

team) Payload Design

Modified RC aircraft (Firebird) Deploy payload with main chute

(~1,500 feet) Remaining weight will be sand

Testing

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Body: Part 2 – Chute Storage

Integration Body section will fit on to

coupler 2 and be rigidly fixed to coupler 3

Main chute will attach to bulkhead 3

Main chutes will be stored here

Manufacturing Rolled carbon fiber 5 harness

pre-preg Cut to 46 inches

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Body: Part 3 – Motor and Fins

Motor will be housed here Manufacturing

Rolled carbon fiber 5 harness pre-preg

Cut to 46 inches Integration

Tail Drogue will attach to bulk head 4 Motor will mount inside body part 3 Body part 3 will slip fit over coupler 3 Slots will be cut for fins

Fins will attach to the bottom

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Fins

Trapezoidal Design Manufacturing

Aluminum plate (1/8”) Will be water jet cut to desired

dimensions Integration

Tabs will fit into body tube slots

Fins will be anchored with epoxy and mechanical fasteners

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Flight Plan - Overview Launch Deploy drogue chute before 10,000 feet (“zipperless” rear separation) Apogee should be very close to 10,000 feet – then fall about 8,500

feet Deploy main chute, nose cone and payload at 1,500 feet Recover all parts within 2 hours

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Flight Plan - Electronics AIM USB Altimeter ($115) 2 Deployments:

Main parachute Drogue (apogee or user defined)

Two 9V batteries for redundancy Our uses

Deploy brake system and drogues (drogue setting) Deploy main parachute (main setting)

Purchased 2 for deployment redundancy

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Flight Plan – Electronics (cont) Electronics Bay will be inside

coupler 3 Pressure sensor holes will

line up using a ‘belt’ of body tube material

Wires from altimeter attach to Davey Fire Electric Matches (low current).

Gunpowder inside Silly Pipe end cap ignites to pressurize body tube and eject recovery system.

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Flight Plan – Simulations

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Motor Minimum launch height

must be >10,000 feet M-motor will work ($750) Cessaroni L1115 will be

used for test launch (7,000 ft AGL) 4,908 N-sec Impulse (Full L)

Test Launch (May 22, 2010) With Utah Rocket Club Must be UNDER 10,000 ft FAA waiver NAR L2 Certification required

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Rent a 4x4 and small trailer Make sure we have at least 2 people at the

competition

Recovery Plan

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Schedule Right Now

Fabricate Components Purchase Parts/Expendables Assemble Rocket Test Sub-systems

Test launch – 5/22/2010 Competition launch – 6/17/2010

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Questions?

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