Apalsson mate, I think you might have it wrong...

The corrugations on the 182's barndoor flaps are simply for strength. If you take note you will see the same corrugations on the ailerons and the elevators..

Fowler flaps are completely different to hinging flaps.. hinging flaps just kind of flap down and fowlers are where the trailing edge or flap kind of flods out to increase the chord of the wing, and in turn creates more lift...

This pic should explain the concept...