2. 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.

3. Flight Sequence
Modify each text box so that they are bulleted lists

4. Design Specifications
GENERAL
SPECIFIC
ACCEPTABLE
Survivability
Must withstand impact
Withstand 10 Gs
Must survive in ocean
Pass a dunk test with no leaks
Must survive heating
Internal temperature <85°C
Parachute must remain secure
Connection can withstand 50-lbf of tension
Recovery
Contain radio transmitter
Must transmit at least 10 miles
Easy to visually locate
Can be seen by eye from 100m
Measurements
Pressure
.00001atm - 1atm with error < ±2%
Accelerometer
Three axis system; ± 10 Gs
Temperature
-100°C to 1500°C ±0.5°C
Sample rate
> 10Hz
Physical Properties
Weight
~1 kg
Size
4 inch diameter 12 inches long
Internal shape
Must not deform more than 2% of diameter
Buoyant
Must float indefinitely
Center of mass (C.O.M.)
Centered along flight axis
C.O.P. at least 1 inch above C.O.M
Deployment
Turn on once released
Reed Switch
Data Storage
Must hold all data collected
1 GB of storage

5. Reentry Modeling

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

7. Mechanical Components

8. Body Design

9. Nose Cone Design
Add a top view from solidworks of the nose cone

10. 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
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
Waterproof Connectors
Pressure sensors and TC inside nose cone

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

12. Electrical Components

13. Electrical Layout

14. Software Flow Chart

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

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

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

18. Electrical Testing and Evaluation
Transmitter Test
Most Likely Failure Modes
Solder Point Weakness
Magnetic Switch
Batteries Run Out of Power
Float Test had dummy weight of 4 batteries
Transmitter Test was done with an ______________ oscilloscope

19. Flight Model
Show Mass Model at the end of the presentation?