The 'Great Debate' - Spitfire vs BF109

[Crumpp]

buffet is due to the aero washout (the turbulence hitting the elevator)

I agree the elevator is going to be hard to control from the buffet moments and disturbed flow off the wings.

The buffet itself is caused by flow reversal in the stall portion of the wing. As the flow reverses, it creates suction which creates drag, as our drag goes up, so does our lift. On the thrust axis, weight and engine thrust have to oppose that drag and the airplane will move to a new equilibrium point.

The large ample stall warning buffet comes from high energy flow reversal.