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  2. Flap (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Flap_(aeronautics)

    A flap is a high-lift device used to reduce the stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in drag so they are retracted when not needed.

  3. High-lift device - Wikipedia

    en.wikipedia.org/wiki/High-lift_device

    The most common high-lift device is the flap, a movable portion of the wing that can be lowered to produce extra lift. When a flap is lowered this re-shapes the wing section to give it more camber. Flaps are usually located on the trailing edge of a wing, while leading edge flaps are used occasionally. There are many kinds of trailing-edge flap.

  4. Flight control surfaces - Wikipedia

    en.wikipedia.org/wiki/Flight_control_surfaces

    Flaps raise the maximum lift coefficient of the aircraft and therefore reduce its stalling speed. [5] They are used during low speed, high angle of attack flight including take-off and descent for landing. Some aircraft are equipped with "flaperons", which are more commonly called "inboard ailerons" [citation needed]. These devices function ...

  5. Blown flap - Wikipedia

    en.wikipedia.org/wiki/Blown_flap

    Ball-Bartoe Jetwing used for blown-wing research. Note the "augmentor", intended to direct the discharged airflow over the wingWilliams [8] states some flap blowing tests were done at the Royal Aircraft Establishment before the Second World War, and that extensive tests were done during the war in Germany including flight tests with Arado Ar 232, Dornier Do 24 and Messerschmitt Bf 109 aircraft.

  6. Harlan D. Fowler - Wikipedia

    en.wikipedia.org/wiki/Harlan_D._Fowler

    Testing by Fred Weick at the National Advisory Committee for Aeronautics (NACA) realized the Fowler flap would reduce landing speed, decrease landing and take-off runs, and improve climbing ability. The first aircraft to use the Fowler flap included the Martin 146 prototype in 1935, the German Fieseler Fi 97, and the Lockheed Super Electra in ...

  7. Aircraft systems - Wikipedia

    en.wikipedia.org/wiki/Aircraft_systems

    A hydraulic system is required for high speed flight and large aircraft to convert the crews' control system movements to surface movements. The hydraulic system is also used to extend and retract landing gear, operate flaps and slats, operate the wheel brakes and steering systems.

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