Werner Krüger

Werner Krüger
Werner Krüger
Born	November 23, 1910; Kolberg, Poland
Died	October 21, 2003 (aged 92); Göttingen, Germany
Nationality	German
Alma mater	Aerodynamische Versuchsanstalt, AVA
Occupation	German engineer and innovator
Known for	Krueger flap

Werner Krüger (1910-2003) was a German engineer who invented the Krueger flap 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. [1] Leading edge Krueger flaps enhance wing's low speed lift production especially on swept wing aircraft.[2]

Krueger flaps deployed from the leading edge of a Boeing 747 (top left and right in photo

Krueger-Flap

References

Hitchens, Frank (November 25, 2015). The Encyclopedia of Aerodynamics. ISBN 9781785383250. Retrieved July 16, 2020.
Wyatt, David (August 21, 2014). Aircraft Flight Instruments and Guidance Systems: Principles, Operations and ... ISBN 9781317938316. Retrieved July 16, 2020.

External links

Hamburg University of Applied Sciences: German Development of the Swept Wing (German) (pdf-document)

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[Hitchens-1] Hitchens, Frank (November 25, 2015). The Encyclopedia of Aerodynamics. ISBN 9781785383250. Retrieved July 16, 2020.

[Wyatt-2] Wyatt, David (August 21, 2014). Aircraft Flight Instruments and Guidance Systems: Principles, Operations and ... ISBN 9781317938316. Retrieved July 16, 2020.