NOTE: An aircraft may possess none, one, or a combination of the above control surfaces.įigure 1. Lowers stall speed and provides control during slow flight. Outer leading edge of wing forward of aileronsĭirects air over upper surface of wing during high angle of attack. Can augment aileron function.Īllows control at low speeds for short field takeoffs and landings.0 Increases feel and effectiveness of primary control surface.Īssists or provides the force for moving a primary flight control.ĭecreases (spoils) lift. Reduces the force needed to move a primary control surface. Trailing edge of primary flight control surfaces Secondary/Auxiliary Flight Control SurfacesĮxtends the camber of the wing for greater lift and slower flight.Īllows control at low speeds for short field takeoffs and landings.
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