Originally posted by Tall Paul
When outboard ailerons are drooped to act as flaps (if they are) on a full-scale 200 ton airliner, the plane is NOT going to be manuvered any more than the slight corrections needed to keep it on the glide path.
The situation is NOT directly transferable to a 10 oz model airplane which will be flung around.
But they do use them on DeHavilland Canada aircraft. In the world of STOL they really do work and work very well.