- 3.2 CoDR Checklist Kareena Shah
- 5.2 CoDR Checklist Sreeja Akula  Â
- 3.2 (Thermal Equalization) Thermal Strap Analysis Divya Krishna Â
- 4.1 (Rotational Dynamics and Updated Torque Calcs) Izaan Rizvi @Colter Adrian Yang  Elisha Aranibar Â
- 4.1 (Tank and Propellant Pressure Analysis) Brandon Garcia @Rene Â
3.2
-kareena
4.1 -Â
4.1 Design Book MCU Specs:
- Frequency up to 480 Mhz
- 2 Mbytes of flash memory
- 1 Mbyte of RAM
- 3x 16-bit ADC
- STM32H753 VI →
- Number of Direct channels - 3
- Number of Fast channels - 2
- Number of Slow channels -11
- STM32H753 ZI →
- Number of Direct channels - 2
- Number of Fast channels - 9
- Number of Slow channels -17
- STM32H753 AI/STM32H753 II /STM32H753 BI →
- Number of Direct channels - 2
- Number of Fast channels - 9
- Number of Slow channels -21
- STM32H753 XI →
- Number of Direct channels - 4
- Number of Fast channels - 9
- Number of Slow channels -23
- STM32H753 VI →
- –40 to +85 °C temperature range from a 1.62 to 3.6 V power supply
- 4x I 2Cs– 4x USARTs, 4x UARTs and 1x LPUART
- a high-resolution timer, 12 general-purpose 16-bit timers, two PWM timers for motor control, five low-power timers
4.2
4.3
5.1
Sensor Inventory
The sensor suite must be finalized for CoDR and justified, including:
IMU (gyroscopes and accelerometers
- ignore
Redundant rate sensing
- 2 pressure sensors
Tank temperature sensor array
- Custom from WIKA
Pump RPM and motor current sensing
- ignore
Pressure and vent-state sensing
- ignore
5.2
For each sensor, Controls shall specify:
Update rate
Accuracy and noise
Drift characteristics
Survivability under spin
Electrical interface
5.3
7.1 -
| Failure Mode | Detection | Isolation / Safe Mode | Recovery |
|---|---|---|---|
| Sensor bias / dropout | Redundancy, out-of-range checks, rate checks, residuals | Flag sensor invalidity, use backup, and reduce authoriuty | Sensor reset → offset compensation where valid |
| Unexpected torque | Model vs measured residuals | Switch to damping mode, inhibit impulses | Let residuals decay and re-estimate states |
| Spin-axis misalignment | Orientation vs expected dynamics | Reduce authority, re-acquisition | Re-estimate axis and update control parameters |
| Partial power loss | Voltage / Current thresholds | Disable non-essential processes and maintain survival | Gradually restore functions as power stabilizes |
FDIR = Continuously:
Observe system state
Compare to model/expectations
Flag anomalies
Enter a safe mode
Attempt recovery
Only return to nominal when consistent