>>1605435a single flaw getting enough cooling air to the engine's
and in the case of turbine / jet engines is to get enough air into the intake to keep it running .eg compressor stall
>>1606659the functions of elevators and ailerons could be combined
along with that of a kind of skid steering air brake called as
https://en.wikipedia.org/wiki/Deceleronbut it complicates control's somewhat