This section will look at modifying ArduPilot for use in a High Altitude Glider as an autopilot system.

Need addressing:

• Stock GPS doesn't work > 18km - run it with another gps? How do you integrate that with ardupilot?
• Some people are noting sensor failure above a certain alt - is this present in APM2?
• How to set PID values for custom high altitude airframes
• ….