4 ms·
> This separation can engulf the elevators such that even at full travel, the elevators are operating in dead air and from then on Does this refer to the deep
by nayuki 1y ago
> This separation can engulf the elevators such that even at full travel, the elevators are operating in dead air and from then on
Does this refer to the deep stall that affects T-tail aircraft ( https://en.wikipedia.org/wiki/Stall_(fluid_dynamics)#Deep_stall https://en.wikipedia.org/wiki/Stall_(fluid_dynamics)#Deep_st... ), or is it a phenomenon that applies to nearly all fixed-wing subsonic aircraft?
- WalterBright 1y agoGreat question! I don't know the answer. The separation affects the ailerons as well, so you lose roll control.
- potato3732842 1y agoComparable physics, different route to the same effect. It has to do with air compression, speed of sound, etc, shielding the control surfaces and the shape of that effect around the plane as you increase speed. IDK if it has a name. Any youtube explanation of supersonic flight should cover it. Most higher speed subsonic aircraft recycle the design principals from supersonic aircraft to alleviate the problem. You could on paper dive a Learjet or 747 or other "designed for the higher end of subsonic" aircraft to Mach 2 and retain control authority if you wanted and if the airframe could take it.