Control surfaces for my IBIS experimental aircraft
Airplane control surfaces
The elevator is configured as a 25% slotted flap that is attached to the canard wing. Since we're in canard aircraft territory here, the elevator is in the front, of course. The hinge line (at ~80% of the chord) is a bit below the wing's surface, so lowering the elevator actually moves the elevator backwards as well, which increases the total canard wing area at that control surface setting.
'Flaperon' is a contraction of 'flap' and 'aileron', describing a single control surface per wing that performs the function of the two. An ingenious mixer below the back seat takes care of making sure that the flaperons move according to the pilot's wishes: they both move down when the flap handle is pulled; they move in opposite directions when the stick is shifted sideways. The mixer combines these functions, so that it is still possible to have roll control while flying with full flaps.
The rudders are mounted on the winglets.
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