"Are you sure it would be overstressed? I've thought about this and I'm not convinced. Speed doesn't stress, drag does. The speeds are so high BECAUSE of reduced drag forces. To induce an equal force at lower density requires higher…"
"Johnny is right. There are a lot of amateur high-altitude balloon launches being done which are recording GPS data between 60,000-100,000+ ft. The majority of gps modules won't allow it, but there are some out there that will. I came here…"
"I'm hoping to hear an answer on this too. I'm wanting to use the APM to guide a balloon-dropped glider back to the launch point or to a remote touchdown site. Basically high-altitude balloon payload that navigates its way home. So I need…"