New Recovery Node!
Circuit Blocks
- LPC2148 microcontroller
- SPS (Switching Power Supply)
- protection circuitry
- frequency locked
- Turn off circuitry
- HAP (Highly Available Power supply)
- Battery
- switchover
- Turn off circuitry
- Pyro (pyrotechnic actuators)
- high voltage supply
- ignition switches
- Safety interlock
- Sensor (sensors for doing launch and apogee detect)
- accelerometer for launch detect?
- pressure sensor for apogee detect?
- Others?
Requirements
Musts
- Needs to not kill anyone
- can't fire randomly
- Needs to have a state machine that only continues in an actual flight.
- Needs sensors to step through the flight (launch detect).
- Must be able to be tested well (completely).
- Needs to fire pyros reliably to recover the rocket
- can't fail
- Should not be reliant on outside systems
- Needs to fire the igniters at the right time
- needs to sense when it's apogee and/or the right altitude to release the mains
Would be nice
- Nice recorded the sensor data over time
- If there's an external communication channel (debug, radio, etc).
- report internal state
- report sensor values
- be able to manually step through states
Specifications