The wings of an airplane extend outward from each side of the body of the plane,
called fuselage. A wing has a curved top and a nearly flat bottom. This shape helps create
the lift that raises an airplane off the ground and keeps it in the air.
The wings have additional hinged, lift producing surfaces called flaps. Flaps are
deployed downward on takeoff and landing to increase the amount of lift produced by the
wing. On some aircraft, flaps are integrated into both the leading and trailing edges of the
wing. Slats are another type of lift producing surface, installed solely on the leading
edge, which are also used at takeoff and landing. The spoilers, located on top of the
wing, are used to reduce the amount of lift created by the wing once the aircraft has
landed.
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Introduction