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To go faster on a plane, should the flaps be flat or tilted?
For the plane to move faster, the flaps need to be flat and smooth, for two reasons:
First, to reduce drag, which is caused when there are obstacles in the air's way. If flaps were up, drag would slow the plane.
Secondly, flat flaps produce more lift. Flaps are desined to change the shape of the wing and make it wider, so that more lift can be produced by more air pushing up.