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aileron

An aileron is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft.Ailerons are mounted on the trailing edge of each wing near the wingtips and move in opposite directions. When the pilot moves the aileron control to the left, or turns the wheel counter-clockwise, the left aileron goes up and the right aileron goes down. A raised aileron reduces lift on that wing and a lowered one increases lift, so moving the aileron control in this way causes the left wing to drop and the right wing to rise. This causes the aircraft to roll to the left and begin to turn to the left. Centering the control returns the ailerons to the neutral position, maintaining the bank angle. The aircraft will continue to turn until opposite aileron motion returns the bank angle to zero to fly straight.[Wikipedia]

Relationships
Parents	flight control surface	Flight control surfaces are aerodynamic devices allowing a pilot to adjust and control the aircraft's flight attitude.The primary function of these is to control the aircraft's movement along the three axes of rotation. A conventional fixed-wing aircraft uses three primary flight control surfaces – aileron, rudder and elevator to control the roll, yaw, and pitch respectively. Secondary flight control surfaces might include spoiler, flaps, and slats on the wings.[Wikipedia]

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