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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. 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 ...

  4. High-lift device - Wikipedia

    en.wikipedia.org/wiki/High-lift_device

    The triple-slotted trailing edge flaps are well displayed and the Krueger flaps on the leading edge also are visible. In aircraft design and aerospace engineering, a high-lift device is a component or mechanism on an aircraft's wing that increases the amount of lift produced by the wing. The device may be a fixed component, or a movable ...

  5. Blown flap - Wikipedia

    en.wikipedia.org/wiki/Blown_flap

    Blown flaps, blown wing or jet flaps are powered aerodynamic high-lift devices used on the wings of certain aircraft to improve their low-speed flight characteristics. They use air blown through nozzles to shape the airflow over the rear edge of the wing, directing the flow downward to increase the lift coefficient .

  6. Krueger flap - Wikipedia

    en.wikipedia.org/wiki/Krueger_flap

    Krueger flaps deployed from the leading edge of a Boeing 747 (top left and right in photo). Krueger flaps, or Krüger flaps, are lift enhancement devices that may be fitted to the leading edge of an aircraft wing. Unlike slats or droop flaps, the main wing upper surface and its nose is not changed. Instead, a portion of the lower wing is ...

  7. Gouge flap - Wikipedia

    en.wikipedia.org/wiki/Gouge_flap

    The Gouge flap, is a type of aircraft flap, which moves on a track when raised or lowered; in level flight. Invented by Arthur Gouge of Short Brothers in 1936, it allows pilots to increase both the wing area and the chord of an aircraft's wing, thereby reducing the stalling speed at a given weight. This provides benefits including a shorter ...

  8. Circulation control wing - Wikipedia

    en.wikipedia.org/wiki/Circulation_control_wing

    Wing flaps and slats are currently used during landing on almost all aircraft and on takeoff by larger jets. While flaps and slats are effective in increasing lift, they do so at a high cost of drag. [3] The benefit of the circulation control wing is that no extra drag is created and the lift coefficient is greatly increased.

  9. Harlan D. Fowler - Wikipedia

    en.wikipedia.org/wiki/Harlan_D._Fowler

    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 1937. [6] Other early adopters of the Fowler flap included the Boeing B-17, B-29, and Lockheed P-38 Lightning. Many modern commercial aircraft use Fowler flaps.

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