ORIGINAL: excaliber
Geez, don't know what the big to do is about autonomous flight
The Preditor and Preditor B's and GNAT have been doing it for the past few years all over the world. even under IFR flight plans.
course our dinky models won't get to flt. lvl 20 anyhow.
May want to look up an old record. (well it was denied due to an engine modification...) I think it was about 1975, there was a Model Aviation article abot a model EXCEEEDING 37000 ft. He met the under 11 lb rule... but he made a turbocharger for the engine to be able to operate at that altitude.
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BTW... you can now BUY a turbocharger for yout glow engines... ( not cheap... but available )