1. Page 1 Recovery Discussion 11/4/2015

2. Page 2 Roles & Responsibilities ? Point Of ContactResponsibility Alisson Clark Liam Jaffe Yash Pahade Yumi Shridhar Nivi Thomas Ben Trowbridge Chinmay Upadhye Logic Documentation (nominal, off nominal) Sensor Actuator List Milestone Schedule Requirements (Competition, System) Team Coordinator Analysis Lead System Design Lead

3. Page 3 Competition Requirements ?

4. Page 4 TESLA Recovery Define Logic: 1) Nominal – everything works perfectly (draft logic chart follows) 2) Off-nominal cases Shorter burn times (20 sec, 15 sec, … 3 sec? Longer burn times Loss of stability Other Logic flow chart for all cases Defined what sensors are needed to implement logic Define actuator requirements

5. Page 5 TESLA First Motion Performance Calculation (ACC, V, D) Nominal Operation ? Engine Shutdown ? YES NO Calculate Decelerator deployment time or conditions (T1) Main chute deployment conditions (T2) Does T = T1 ? NO Deploy Decelerator Did Decelerator Deploy? Deploy Main Chute Does T = T2 ? Deploy Main Chute NO YES End Recovery Routine Off Nominal Deployment Logic ? Nominal Deployment Logic What is the criteria for “Nominal Operation” How doe we determine this (sensors?) What sensors and logic are required Team to define logic for all off- nominal cases Need to define T1 & T2 conditions and make sure we have the proper sensors How do we know? What is the voltage, power and time duration of the signal to fire the deployment device? Potential Sensor Options: GPS – Update Rate ? X,Y,Z acceleration (integrate to get velocity & displacement) Time Barometric pressure First motion switch ACC = Acceleration V = Velocity D = Distance T = time

6. Page 6 TESLA

7. Page 7 TESLA Small Parachute Concept Small pilot chutes available from 30” diameter and larger Small Parachute Main Parachute Big Spring

8. Page 8 TESLA Recovery Data Book

9. Page 9 TESLA Recovery Components Jack Screws (3) Tension Spool Parachute Push Plate Ejection Spring Attachment Fastener Cable Terminal Cable Shroud Tube Jacking Flange Cable Retention Collet Cable Cutter Support Cable Cutter Terminal Fitting Fasteners Terminal Fitting (6) Fasteners Cutter Support (6) Other Items: 1.Bridle 2.Bridle Fitting (2) 3.Bridle Fitting Fasteners (4) 4.Reefing System 5.Pilot Chute? 6.Pilot Chute cutter? 7.Electrical Harness

10. Page 10 TESLA Slider Reefing System

11. Page 11 TESLA Example Reefing Systems

12. Page 12 TESLA Deployment Bag Reefing System

13. Page 13 TESLA Deployment Bag – We need to design one http://www.fruitychutes.com/ https://www.apogeerockets.com/ http://www.parachutesplus.us/store/dep loyment-bags/

14. Page 14 TESLA Pyro Initiated Gas Generation Actuator

15. Page 15 TESLA Pyro Initiated Gas Generation Actuator

16. Page 16 TESLA Pyro Pin Pusher

17. Page 17 TESLA Pyro Pin Pusher