Werner Krüger (November 23, 1910 – October 21, 2003) was a German engineer who invented the

Krueger flap 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 i ...

in 1943. He evaluated Krueger (Krüger) flaps in the wind tunnels of Göttingen Aerodynamische Versuchsanstalt, AVA in 1944. Krueger flaps are aircraft lift enhancement devices fitted under the leading edge of an aircraft wing where a portion of the lower wing is rotated out in front of the main wing leading edge. Boeing flight tested Krueger flaps on the B-707 prototype on 15 July 1954 and first used Krueger flaps in production for the B-727 maiden flight on 9 February 1963. Leading edge Krueger flaps enhance wing's low speed lift production especially on

swept wing A swept wing is a wing that angles either backward or occasionally forward from its root rather than in a straight sideways direction. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigate ...

aircraft.

References

External links

Hamburg University of Applied Sciences: German Development of the Swept Wing (German) (pdf-document)
{{DEFAULTSORT:Kruger, Werner 20th-century German engineers 20th-century German inventors 1910 births 2003 deaths German aerospace engineers People from Kołobrzeg People from the Province of Pomerania