Originally Posted by
Chris Scott
You may know more than I do about aileron upfloat, its degree and possible effects, but I find it hard to accept that it would be full deflection. Why would a control that is effectively feathered in the airflow be at full deflection and producing a full rolling moment?
That is because the wing generates lift. The lift trying to lift the wing will also lift the aileron. The lift is stronger than the airstream on the upper side of the wing.