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 rotated out in front of the main wing leading edge. The Boeing 707 and Boeing 747 used Krueger flaps on the wing leading edge. Several modern aircraft use Krueger flaps between the fuselage and closest engine, but use slats outboard of the closest engine. The Boeing 727 also used a mix of inboard Krueger flaps and outboard slats, although it had no engine between them.
Kruegerflaps, 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...
Blown flaps or jet flaps are powered aerodynamic high-lift devices used on the wings of certain aircraft to improve their low-speed flight characteristics...
The Gurney flap (or wickerbill) is a small tab projecting from the trailing edge of a wing. Typically it is set at a right angle to the pressure-side surface...
a variable-camber Kruegerflap to be deployed during landing which protrudes just ahead of the leading edge. Although Kruegerflaps have been tried before...
junctions. Flap track fairings Fairings are needed to enclose the flap operating mechanism when the flap is up. They open up as the flap comes down and...
ailerons, but on some aircraft, will "droop" when the flaps are deployed, thus acting as both a flap and a roll-control inboard aileron. Slats, also known...
flaperon (a portmanteau of flap and aileron) on an aircraft's wing is a type of control surface that combines the functions of both flaps and ailerons. Some smaller...
cuffs Leading edge extensions Leading edge slats Leading edge slots Kruegerflaps Stall strips Vortex generators. Associated terms are leading edge radius...
aircraft but may also appear on smaller ones). Many aircraft have wing flaps, controlled by a switch or a mechanical lever or in some cases are fully...
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