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  • Flaps are found on most aircraft. They are usually inboard on the wings’ trailing edges adjacent to the fuselage. Leading-edge flaps are also common. They extend forward and down from the inboard wing leading edge. 
  • The flaps are lowered to increase the camber of the wings and provide greater lift and control at slow speeds. They enable landing at slower speeds and shorten the amount of runway required for takeoff and landing. 
  • The amount that the flaps extend and the angle they form with the wing can be selected from the cockpit. Typically, flaps can extend up to 45–50°. 
  • various aircraft with flaps in the extended position. 
  • Flaps are usually constructed of materials and with techniques used on the other airfoils and control surfaces of a particular aircraft.
  •  Aluminum skin and structure flaps are the norms on light aircraft. Heavy and high-performance aircraft flaps may also be aluminum, but the use of composite structures is also common. 

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