Cornell Rocketry C DR

1. Cornell Rocketry CDR

2. Team Summary Leads: Matthew Gentile, Christina Middleton,Jayant Mukhopadhaya, Noah Weingart, Matthew Skeels Advisor: Dr. Ephrahim Garcia Mentor: Mr. Daniel Sheerer, TRA No: 13281

3. Final Launch Vehicle Dimensions • Mass: 35.9 lbs • Length: 117.5 inches, 9 feet and 9.5 inches InterstageCoupler 4.5 in Sustainer section 21 in Booster section 25 in Nose Cone, 27.5 in R&T Section 16.5 in Payload section 23 in

4. Key Design Features: Interstage Coupler and Booster Stage Avionics • Length: 18 inches • Use RRC3 Altimeters: Timer output used to separate and drogue output used to deploy main for 1st Stage

5. Key Design Features: Sustainer Avionics Bay • Use redundant PerfectFlite Stratologger altimeters for dual deployment • Fully removable to ease assembly and integration

6. Key Design Features: Parachutes • Four parachutes on rocket: Booster Stage Main, Sustainer Stage Drogue, Booster Stage Drogue, and Nosecone main. • X-type parachutes to prevent oscillation of rocket during descent. • Removed reefing system from design.

7. Key Design Features: Payload Ejection Mechanism • Novel sled design actuated using a threaded rod and a stepper motor • Allows for ejection of EMUs at various heights • Extension and retraction during descent reduces chances of damage during landing

8. Key Design Features: Motor Retention • Forward retention using an Eyebolt • Bulkhead and coupler assembly forward of the motor to provide greater support Threaded part

9. Final Motor Choice • No change in the motor selection • Second stage motor is a White Thunder for ease of lighting during flight

10. Flight Stability and Thrust to Weight Ratios • Rail exit Velocity:

11. Mass Statement • Allowable Mass increase: 9 lbs or 25% • Projected altitude is lower than present simulations to allow for mass increase and possible ballast weight

12. Recovery and Tracking Details

13. Recovery and Tracking Details Full Scale Avionics Bay Half Scale Avionics bay

14. Kinetic Energy at Key Stages

15. Predicted Drift

16. Test Plan: Static Testing • Drop Test • Tension Test • 3 point bending • Axial Tube Crush

17. Test Plan: Half Scale and Full Scale launches • Manufacturing of Half Scale is Complete • Launch Half Scale on the 15th of March • Launch Full Scale on the 22nd of March

18. Ground Testing of Recovery system • Use Vaccum to simulate drop in pressure during ascent • Try various amounts of Blackpowder to get best results • Perform fox hunts to test tracking equipment Avionics bay for Half Scale

19. Payload Design: Payload Ejection Mechanism Payload Sled: Top view Payload Sled: Bottom view

20. Payload Design: Staging • Use a fully removable avionics bay design for maximum maneuverability • 3D print bay for ease of manufacturing • Use 2 RRC3 Altimeters to separate the booster section and deploy parachute Booster Stage Avionics system

21. Payload Design: Hazard Detection Camera • Camera module shown used in conjunction with BeagleBone • Protective case designed to protect from blast charge • Custom software package designed to detect hazards and communicate with ground station HackHD – 1080p Camera module

22. Payload Design: Ejectable Methane Units EMUs released from PEM: spiral down with wings Sense and transmit atmospheric methane levels Printed payload units crawl with aid of nitinol actuators

23. Payload Integration • Mount to bulkhead inside airframe • Two forward rail supports • Fill ejection charge cannisters • Place EMU’s inside canister and protect using Nomex cloth

24. Interfaces: Internal • Each separate section is wired using connectors shown • Provides information about the separations • Information sent to ground station • Used to control events such as sustainer ignition

25. Interfaces: External • X-bee used to communicate with Ground Station GUI • Sends HDC, separation, tracking and PEM information • All electronics can be switched on or off using key switches

26. Status of Requirements Verification • Due to cancellation of subscale launch, verification plan has been delayed • Rocket design and CAD models made to fulfill all requirements • Static, ground and functional testing will all occur during and after manufacturing

27. Project Plan

28. Funding Plan • Main Source is Cornell University • Slowly moving towards Corporate funding • Rebranding the Team’s image • New Website design in the works

29. Funding Plan • Current Corporate Sponsors • University Policy: • Funding is reduced as the team time goes on • Creates a sense of urgency for finding corporate sponsors • Currently contacting eight new companies • New sponsorship packet

30. Budget

31. Outreach • Reach out to at least 200 middle school students. • Main goal is to teach students physical concepts through first hand interaction • Events would be held both on and off school properties • Focus on Direct contact by teaching STEM activities and then performing a demo or hands on project with the students to enforce the topic of choice

32. Outreach events The Exploration of Energy Newton’s Law Day Crazy Kinematics Building miniature rockets