1. SPIRIT of the Koala Project VOLT Critical Design Review Anthony Anglin, Colin Harkins, Dylan Cooper, Thomas Jefferies, Starteya Pais, Joao Mansur, Andrew Trujillo, Dustin Fishelman

2. Mission Overview  Prove the feasibility of using the flow of atmosphere across the surface of the BalloonSat to generate current  Expect to discover that using magnets and the spin of the satellite will generate current  We predict variation in the levels of current that will be generated  We are conducting this mission to determine the feasibility of using wind to power experiments in future BalloonSats

3. Flow Down

4. Flow Down Part 2

5. Flow Down Part 3

6. Design Overview  Bearings will allow BalloonSat to rotate independently of the flight tube  Magnets attached to the flight tube will rotate within a coil of wire, generating electric current  Current and voltage generated will be measured and recorded  Fins attached to the outside of the cube will be used to increase the amount of air flow

7. Ordered Parts  Ordered parts include:  Neodymium magnets  Sealed, ceramic, stainless steel ball bearings  Current and voltage sensor  Order Status:  Magnets: Ordered, received  Bearings: Ordered, received  Current Sensor: Ordered, received

8. Drawings

9. Block Diagram

10. Mass Budget HardwareWeight (g)QuantitySubtotal Bearings9.07218.1437 Magnets132.2972264.594 Current Sensor111 Arduino30260 Ardunio Shield30260 Copper Wire34.81 Accelerometer111 Pressure Sensor111 Temperature Sensor122 GoPro1671 Camera1301 Humidity Sensor111 Batteries406240 Totaln/a 980.5377

11. Economic Budget HardwareCostQuantityS/HSubtotal Bearings14.9526.1136.01 Magnets19.9926.6546.63 Current Sensor 19.9510 Totaln/a 102.59

12. Schedule  September 28th – Turn in proposal (4:00 pm)  September 30th - Team Meeting  October 2nd – CoDR Presentations  October 3rd – Team Meeting  October 4th – Order all the hardware  October 5th – Authority to Proceed October 7th – Finalize design + Team meeting  October 10th – Team meeting  October 13th – Acquired all hardware  October 14th – Begin construction + Team meeting  October 17th – Team meeting  October 18th – Design Document Rev A/B (7:00 am) + pCDR Slides Due (7:00 am)  October 21st – Team meeting  October 28th – Testing Day + Team meeting  November 4th – Finalize programming + Team meeting  November 7th – Team meeting  November 13th – In-Class demo  November 14th – Team meeting  November 16th – Design Document Rev C  November 18th – Team meeting  November 25th – Finalize satellite and prep for launch  November 27th – LRR Slides Due (7:00 am)  November 28th – FINAL Team meeting  November 30th – Final Weigh-in  December 1st – Launch day  December 8th – ITLL Design Expo + Design Document Rev D Due + Extra Credit Video  December 11th – Final Presentations and Reports

13. Proposal Requirements  Our BalloonSat will generate electricity, powered by the rotation of the BallonSat  Using magnets rotating through coils of wire  A GO PRO video camera will be used to image the flight  Attached inside of cube opposite of the camera  BalloonSat will be recovered  GPS and the string will keep them all attached and able to be discovered  Flight String will attach to the BalloonSat through a PVC pipe  Must be tied very tightly to ensure the pipe does not spin, only the cube  Temperature will remain above -10 degrees Celsius  Through dry ice testing and multiple layers of insulation  Weight will not exceed 1125 grams  Our weight budget shows we will not exceed  A three axis accelerometer will be used to measure acceleration during the flight  Shown in our block diagram, will be attached to Arduino

14. Proposal Requirements 2  Design will allow for an Arduino UNO and related components  Shown in our block diagram and drawings  External temperatures will be measured  Shown in block diagrams  Canon A570IS will be used to image the environment  Placed facing outwards, opposite side of GO Pro  An active heater system will be used to maintain interior temperature  Shown in our block diagram  A visual indicator on the exterior of the BalloonSat will allow SOK to confirm that the payload ready is for launch  Will use an LED light attached to the inside to indicate launch preparedness

15. Test Plan  Tests will include drop tests, cooler tests, subsystems tests, functional tests, whip tests, and mission simulation tests  Will experiment with different fin types to conclude which one will create the most drag and spin  Mission Simulation will include spinning the cube by hand, and taking it to the wind tunnel for testing  Already have done drop at DLC and some whip tests  Future tests will include dry ice cooling, and more whip tests

16. Test Schedule  October 7 th – Drop Test  October 21 st – Spin Test  October 28 th – Sensor Testing (Pressure, humidity, accelerator, temperature)  November 4 th – Functional Test (Generator testing)  November 11 th – Subsystem Test (External and internal)  November 18 th – Cooler Testing  November 25 th – Mission Simulation Test

17. First Draft Thoughts  Expect to see spin created by the fins and the rotation on the BalloonSat  From this spin there will be evidence of current and voltage created  Will show that we can supply voltage for most of the experiment, but not entirely  Results will prove that using the rotation is a sufficient method of running an experiment

18. Organization Chart Name: Major: Task:  Andrew Trujillo Astrophysics Researcher  Starteya Pais Aerospace Engineering Researcher/Secretary  Joao Mansur Aerospace Engineering Researcher/ Solderer  Thomas Jeffries Aerospace Engineering Team Leader/Budget Manager  Colin Harkins Open Option Engineering Secretary/Structural Design  Dustin Fishelman Aerospace Engineering Coordinator/Structural Design  Dylan Cooper Aerospace Engineering Lead Programmer  Anthony Anglin Aerospace Engineering Coordinator/Researcher

19. Biggest Worries  Will not generate current  Magnets will not properly rotate through coils  Not enough spin during flight  Fins will break off