Dynamo Critical Design Review

1. DynamoCritical Design Review Team 2 Careful Harry Glenda Alvarenga J.J. Busse Emily Eggers Adam Kemp Gabrielle Massone Dalton Smith Corey Wilson

2. Mission Overview • To investigate small scale, high altitude kinetic power generation and assess its applications to present and future spacecraft • Hope to prove turbulence of flight can be harnessed as a viable energy source in an otherwise inhospitable environment • Hypothesis: greater turbulence and motion during flight will generate greater amounts of power.

3. Mission Overview • Why? • Provide alternative power source for present and future spacecraft • Determine which variables (altitude, acceleration, air currents, etc…) produce most turbulence and power • Indirectly study physical stresses of a spacecraft during launch, flight, recovery, etc… • Possible influence on future spacecraft structures

4. Requirements Flow Down

5. Design Overview

6. Dynamo Structure Top-Down 2 Dimensional View

8. Dynamo Structure Corner Perspective 3 Dimensional View

10. Kinetic Energy GeneratorDesign Overview Changes: Elimination of parabolic motion of magnet, magnets now inside coil.

11. K.E.G. Continued • Inside the coil there shall be a rectangular compartment fitted to the size of 4 disk magnets stacked to form cylinder • Sideways motion will cause the magnets to roll within compartment along coil, causing magnetic flux & inducing an electromotive force (voltage) in coil.

12. K.E.G. Continued • Estimated .4 volts or .2 amps will be generated with 100 mph wind (45 m/s) and 24 gauge copper wire for the material of the coil. • 100 mph winds are typically generated within the jet stream, between 7500 – 15000 m

13. Arduino System • Arduino Uno • 9V battery through Voltage regulator • Source code written in open source Arduino compiler • AttoPilot Current/Voltage Sensor • Triple Axis Accelerometer • Both Analog sensors – 10-bit ADC in chip allows for 1024 steps of accuracy in digital data values

14. Camera • Canon SD780 (A780) • Take pictures at 10 second intervals for the majority of the trip (about 80 minutes out of 90) • Programmed to take video clips at 3 separate times. • During launch • During the anticipated burst of the balloon • During anticipated landing • In bottom corner of the satellite with lens pointed outward • Wired to a switch on the outside of our BalloonSat for easy activation • 2GB SD card to store the images and video clips • Images and Video viewed on Corey’s on-site laptop after landing

15. HOBO • Record internal/external temperature and relative humidity. • Located in one of the corners of the BalloonSat. • Boxcar program on Corey’s Windows XP laptop. • HOBO programmed to start collecting data at launch • Upon retrieval, data will be directly uploaded to Corey’s laptop

16. Functional Block Diagram

17. Team Organization

18. Budget Total Weight: 659.9 g Total Cost: $157.5

19. Date Schedule9/27/2011 Turn in order form for mechanical components9/29/2011 Team Meeting (4-6pm)10/3-7/2011 Assemble satellite structure, Kinetic Energy Generator, and HW 05 heater10/3/2011                 Complete Design Document Revisions A/B and CDR10/4/2011   Design Document Revisions A/B due 7:00 am, CDR Presentation10/3-7/2011   Structure Testing (whip, kick, and drop tests)10/6/2011   Team Meeting (4-6pm)10/10-14/2011            Generator motion tests (vibration and sway tests)10/13/2011                 Team Meeting (4-6pm)10/20/2011                  Team Meeting (4-6pm)10/24/2011                  Complete testing; final satellite and generator completed10/25/2011                 Pre-launch inspection10/27/2011                 In-class mission simulation test; Team Meeting (4-6pm)11/1/2011                    Launch Readiness Review (LRR) presentation due at 7:00 am11/1/2011                    Design Document Revision C due at 7:00 am11/3/2011                    Team Meeting (4-6pm)11/4/2011                   Final Dynamo satellite weigh-in and turn-in11/5/2011                   Launch Day (4:45am-TBD)11/5-28/2011               Data analysis and compilation11/29/2011                  Final team presentation and report12/3/2011                   Integrated Technology and Learning Laboratory (ITLL) Design Expo12/6/2011                    Hardware Turn-in in class

20. Test Plan • Structural and Comprehensive • Impact Test (10/6/2011) • Whip Test (10/7/2011) • Cold Test (by 10/23/2011) • Generator • Vibration Tests (10/13/2011) • Oscillation Tests (10/14/2011) • Electrical Circuitry (Throughout) • Technical Testing • Arduino System (by 10/14/2011) • Source Code (debugging, etc…) • Accelerometer tests • Voltage Sensor tests • Verify Data collection • Camera (by 10/20/2011) • HOBO (by 10/20/2011)

21. Expected Results • Expect the generator to work • Calculated continuous .2 A, .4 V at 1G • Most power generated during periods of greatest turbulence • Launch, landing • Jet Stream • Burst • Correlation between altitude, acceleration, and power generation • Possible correlations between temperature and power generation • Temperature = by-product of altitude

22. Biggest Worries • Generator doesn’t work • Generator works, but doesn’t produce enough voltage and current for the sensor to see measurable changes over time • Arduino programming/assembly glitches • General technical malfunctions in programming, circuitry/wiring, etc…