1. Team R3D3 Critical Design Review Kate Kennedy Greg McQuie Nicole Ela Henk Wolda Marisa Antuna Devon Campbell Tyler Smith 10/04/11

2. Mission Overview OBJECTIVE: To design, build, and launch a BalloonSat which will test two types of power generation systems (solar panels and propellers) under flight conditions. The mission will also collect data on humidity, temperature and take pictures during flight. EXPECTED DISCOVERIES: Amount of power generated by solar panels under flight conditions Amount of power generated by propellers under flight conditions Which power generation system is most effective at various altitudes and conditions

3. Mission Overview (cont.) HYPOTHESIS The solar panels will provide more overall power generation but during certain flight periods the propeller will be more efficient

4. Mission Overview (cont.) PURPOSE Gain knowledge of solar panel and propeller power generation in different atmospheric conditions Compare data from the power generation systems to discover which system is more effective overall and at different points during flight Learn about renewable energy sources for flights within Earth's atmosphere Generate information that future BalloonSats may utilize in selecting power systems

5. Requirements Flowdown

6. Requirements Flowdown (cont.)

7. Design - Mission 1.Structure and Testing 2. Solar Panels mounted on four faces, Attopilot, Arduino 3. Side mounted propeller, Attopilot, Arduino 4. Graph of both power vs. time 5. HOBO 6.Camera takes pictures

8. Design - Parts Provided: Foam Core, Insulation, Camera, internal heater, HOBO Ordered: Arduino Uno- have 3 Attopilot Voltage/Current Sense Breakout Components -have 10 3V Flexible solar panels - expected Thurs. 10/6 Not Ordered: 20 rpm Gear motor - expected 2-3 days after order

9. External Satellite Sketch

10. Internal Satellite Sketch

11. Functional Block Diagram

12. Mass and Budget Starting Budget: $250 Arduino Uno: $29.95 3 Attopilots: $59.85 Sparkfun S/H: $2.00 10 Solar Panels: $69.50 Solarhome S/H: $11.95 Subtotal: $173.25 Budget Remaining: $76.75 DC Motor: $24.99 Servocity S/H: $6.99 Total: $205.23 Budget Remaining: $44.77 Mass: 24 Grams

14. Test Plan -Mission Simulation Drop Test Spin Test Cold Test -Experiment Wind Tunnel DC generator/Connectivity Solar Panel system -Image Taken on a walk -Functional Comprehensive Test

15. Test Schedule Test: Drop Spin Cold Wind Tunnel DC Generator/Connectivity Solar Panel system Camera Comprehensive test Retesting Date: 10/10 10/13 10/15 10/17 10/19

16. Expected Results gain information about the efficiency of power generation under different conditions We expect... o Solar panels will generate more power overall o From launch to 12 km- propellers will generate more power o 12 km to burst- solar panels will generate more power o Burst to parachute deployment- solar panels will continue to generate efficiently with some sporadic generation from the propellers o Parachute deployment to landing- solar panels and propellers will generate power on a comparable level Data shall be analyzed post-landing to determine which power generation system is actually most efficient under varying flight environments

17. Team Members Tyler- Team Leader/Integration Building and planning construction: Greg- C&DH / Software Data management and programming Marisa- Power Management of budget/process Devon- Structures Design/ structure Nicole- C&DH / Software Programming and software Kate- Science of Propeller Researching and designing Propeller Henk- Science of Solar Panels Researching and testing, and installing Solar Panels

19. Worries Propeller What should we build the propeller out of? What type of propeller do we want to use? Voltmeters Integrating the Voltmeters with the Arduino