1. BYU Rocket Team 2009-2010 Special thanks to:
Boise Discovery Teens Club
Jeff Smith
Dr. David Fullwood

2. Outline About the Competition About the Rocket Nose Body Fins
Flight Plan
Electronics
Deployments
Simulations
Motor
Recovery Plan

3. 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

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

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

6. Design Overview Nose Cone Body – 1: Payload Coupler 1: Nose Drogue
Body – 2: Chute Storage
Body – 3: Motor and Fins
Coupler 3:
Tail Drogue
Coupler 2:
Altimeter
Coupler 1:
Nose Drogue

7. Nose Design Manufacturing Integration
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

8. 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

9. 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

11. 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

12. Fins Trapezoidal Design Manufacturing Integration
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

13. 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

14. 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

15. 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.

16. Flight Plan – Simulations

17. 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

18. Recovery Plan Rent a 4x4 and small trailer
Make sure we have at least 2 people at the competition

19. Schedule Right Now Test launch – 5/22/2010
Fabricate Components
Purchase Parts/Expendables
Assemble Rocket
Test Sub-systems
Test launch – 5/22/2010
Competition launch – 6/17/2010

20. Questions?