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SOAREX VII Mission

SOAREX VII Mission. Design, construct, test, and fly an ultralight (<1kg) atmospheric entry and descent microprobe carrying instrumentation to measure acceleration and atmospheric structure from 100 km to the surface. Flight Sequence. Design Specifications. Reentry Modeling. Design Solution.

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SOAREX VII Mission

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  1. SOAREX VII Mission Design, construct, test, and fly an ultralight (<1kg) atmospheric entry and descent microprobe carrying instrumentation to measure acceleration and atmospheric structure from 100 km to the surface.

  2. Flight Sequence

  3. Design Specifications

  4. Reentry Modeling

  5. Design Solution Mechanical Components Electrical Components • Body Design • Nose Cone • Assembly • Microprocessor/PCB • Sensors • Transmitter • Power Supply

  6. Mechanical Components

  7. Body Design

  8. Nose Cone Design

  9. Assembly • End Caps secured with 4 screws each • Nose Cone secured with 4 screws to end cap • Antenna attached to BNC connector • Internal foam secures electrical components • Protection against vibration damage

  10. Mechanical Testing and Evaluation • Float Test Most Likely Failure Modes • Insufficient Buoyancy • Eye-hook Fracture • Pressure Seal Leakage

  11. Electrical Components

  12. Electrical Layout

  13. Software Flow Chart

  14. Microprocessor and PCB • Rabbit RCM4300 • Programmed with C code • Data stored on Flash Card • Custom-made Printed Circuit Board created with EAGLE software

  15. Sensors • Accelerometer • Up to 10 G’s • Pressure Transducer (x2) • Up to 15 psi • Thermocouple • Connect with Cold Junction compensator

  16. Power Supply Transmitter • 2 Li-SOCl2 Batteries • 3.3 Volts Each • Operational Life: • ~11 hours • Telonics MK8 • Controlled Pulse • Frequency: 163 MHz

  17. Electrical Testing and Evaluation • Transmitter Test Most Likely Failure Modes • Solder Point Weakness • Magnetic Switch • Batteries Run Out of Power

  18. Flight Model

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