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BoatSat

BoatSat. Mission Requirements: Zihao Wang Structural Layout and Integration: Kevin Jung Mechanical and Thermal Stress Analysis: Han Kim Software Integration and Design Elements: Kevin Cho Electrical Component Design :Anthony Zeater. BoatSat Mission and Requirement. BoatSat Mission.

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BoatSat

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  1. BoatSat Mission Requirements: Zihao Wang Structural Layout and Integration: Kevin Jung Mechanical and Thermal Stress Analysis: Han Kim Software Integration and Design Elements: Kevin Cho Electrical Component Design :Anthony Zeater

  2. BoatSat Mission and Requirement

  3. BoatSat Mission • Solar sail proof of concept demonstration • Propulsion • Attitude Control • Translatable sail position • Centre of pressure and centre of gravity offset • De-orbiting • Drag sail • Change alignment of the sail to the velocity vector • Much shorter life

  4. BoatSat Requirement • Power Requirement • Communication Requirement • Weight Requirement • Cost Requirement

  5. BoatSat Requirement - Power NanoPower Solar P100U-A/B panels OBC including BeagleBone Black; Razor 9DOF IMU; LOCOSYS GPS Receiver NanoPower P31U

  6. BoatSat Requirement - Power

  7. BoatSat Requirement – Mass • QB50 mission mass requirement for 3U CubeSat: 3000 grams Mass Budget

  8. BoatSat Requirement - Link • Very short ground contact period • 8 minutes per orbit • High transmission data rate required • Downlink is more critical than uplink ISIS CubeSat deployable antenna ISIS UHF/VHF full duplex transceiver Link Budget

  9. BoatSat Requirement - Cost • Keep the cost as low as possible • No hard limitations on cost • Most components are commercially available • Assume reasonable cost for custom made components • Estimated cost – US$70,500

  10. BoatSat Structural Layout and Integration

  11. Outer Structure • Components • 3U Casing • Solar Panels • Antenna • Test Plans • 10kN Instron • 3g Load

  12. PCB Stack • Components • EPS • Transceiver • Magnetorquer Board • OBC • Test Plans • Voltage and Power Consumptions • Uplink and Downlink Data Rate • Reliable Data Storage • Actuation Level

  13. Payload • Test Plans • Boom Deployment • Translation in X and Y • 10kN Instron • Sail Folding • Components • Translation Unit • Torsional Springs • Spring Casing • Partition Panels • Boom Stowage Unit • Sail and Sail Rollers

  14. Integration Plan

  15. Mechanical and Thermal Analysis

  16. Mechanical Stress Analysis • Launch Environment

  17. Mechanical Stress Analysis • Longitudinal Stress

  18. Mechanical Stress Analysis • Lateral Stress

  19. Thermal Analysis

  20. BoatSat Software Integration and Design Elements

  21. Breakdown • System Hierarchy and State Diagram • Modes of Operations

  22. System Hierarchy

  23. System Hierarchy (continued)

  24. State Diagram

  25. System Test Repair Repair Repair Test Test Test Add Recovery Add Safe-Mode Add Comms Test Test Implement System Add Data Logging Add Payload Operation Repair Repair

  26. Real Time Operating System • QNX RTOS to be used

  27. Electrical Component Design

  28. On Board Computer Trade-Off Table

  29. OBC: Open source low cost alternative BeagleBoneBlack Razor 9DOF IMU LS20031 GPS Receiver

  30. Other Components NanoPower P31U EPS ISIS Full Duplex Transceiver ISIS Magnetorquer Board

  31. Questions?

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