I am in the planning and research phase of an ambitious project:
Launch a high altitude balloon as high as possible (~25-30km), take pictures, and retrieve the pictures using a long range UAV programmed to fly home.
So some questions:
- Does the APM (1 or 2) have the standard GPS height limit of 60,000 feet programmed in?
- If so, do you think a compass heading could be used until GPS signal is restored?
- Is it easy to know when the GPS is disabled or does it spit out garbled numbers which could really confuse a UAV?
- Most (all?) AP UAVs I've seen have been electric. is there a problem running APM on a nitro plane? (we're considering nitro instead of electric because of the requirement for long range, and the higher power density of liquid fuel over batteries)
- what are your general thoughts on the project? anything you think we should look out for in particular?