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Encyclopedia > Flap (aircraft)

Flaps are hinged surfaces on the trailing edge of an airplane wing which, when deployed, increase the lift (and drag) of a wing by changing the camber of the airfoil. They are usually used while landing to allow the aircraft to fly more slowly and to steepen the approach to the landing site. Fixed-wing aircraft is a term used to refer to what are more commonly known as aeroplanes in Commonwealth English (excluding Canada) or airplanes in North American English. ... A Laughing Gull on the beach in Atlantic City. ... Lift consists of the sum of all the fluid dynamic forces on a body perpendicular to the direction of the external flow around that body. ... For a solid object moving through a fluid or gas, drag is the sum of all the aerodynamic or hydrodynamic forces in the direction of the external fluid flow. ... Camber may refer to: Camber, East Sussex, a seaside resort in England, near to Camber Sands. ...

Three-slotted trailing-edge flaps on a Boeing 747 fully extended for landing at Heathrow airport, London.
Three-slotted trailing-edge flaps on a Boeing 747 fully extended for landing at Heathrow airport, London.

Types include: Download high resolution version (1500x1125, 293 KB) Wing and fuselage undercarriages on a Boeing 747 landing at London Heathrow Airport, England. ... Download high resolution version (1500x1125, 293 KB) Wing and fuselage undercarriages on a Boeing 747 landing at London Heathrow Airport, England. ...

  • Plain flap - rotates on a simple hinge.
  • Split flap - upper and lower surfaces are separate, the lower surface operates like a plain flap, but the upper surface stays immobile or moves only slightly.
  • Fowler flap - slides backwards before hinging downwards, thereby increasing both camber and chord, creating a larger wing surface better tuned for lower speeds.
  • Slotted flap - systems made up of several individual Fowler flaps, which combine to form a single, much more powerful, flap.
  • Blown flaps - systems that blow engine air over the upper surface of the flap at certain angles to improve lift characteristics.

Slats are similar to flaps - they are on the leading edge of the wing. Blown flaps are an aerodynamic device used on the wings of aircraft to improve low-speed lift and take-off characteristics. ... Slats are small aerodynamic surfaces on the leading edge of an airplane wing which, when deployed, allow the wing to operate at a higher angle of attack. ...


See also


  Results from FactBites:
 
Flap - Wikipedia, the free encyclopedia (382 words)
A flap (aircraft) is a hinged surface on the trailing edge of an airplane wing.
In phonetics and phonology, a flap consonant is a sound produced by brief contact between the tongue and the roof of the mouth.
In the phonology of English, flapping is a process by which a /t/ phoneme before an unstressed vowel is pronounced as a flap consonant.
  More results at FactBites »

 
 

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