Küssner effect
In fluid dynamics, the Küssner effect describes the unsteady aerodynamic forces on an airfoil or hydrofoil caused by encountering a transverse gust. This is directly related to the Küssner function, used in describing the effect. Both the effect and function are named after Hans Georg Küssner (1900–1984), a German aerodynamics engineer.[1]
Küssner derived an approximate model for an airfoil encountering a sudden step-like change in the transverse gust
impulse response function (known as Küssner function[3]) needed to compute the unsteady lift and moment
exerted by the air on the airfoil.
Notes
References
- H.G. Küssner (December 20, 1936), "Zusammenfassender Bericht über den instationären Auftrieb von Flügeln (Summary report on the instationary lift of wings)", Luftfahrtforschung (in German), 13 (12): 410–424
- H.G. Küssner (1937), "Flügel- und Leitwerkflattern" (in German)
- H.G. Küssner (1940), "Der schwingende Flügel mit aerodynamisch ausgeglichenem Ruder" (in German)
- H.G. Küssner (1940), "Allgemeine Tragflächentheorie" (in German)
- Ernst H. Hirschel; Horst Prem; Gero Madelung (2004), Aeronautical Research in Germany: From Lilienthal until Today, Springer, p. 287, ISBN 978-3-540-40645-7
- Tuncer Cebeci (2005), Analysis of Low-speed Unsteady Airfoil Flows, Springer, pp. 15–16 & 52, ISBN 0-9668461-8-4
- Raymond L. Bisplinghoff; Holt Ashley; Robert L. Halfman (1996), Aeroelasticity (revised ed.), Dover, pp. 281–286, ISBN 0-486-69189-6
- John M. Eggleston (1956), Calculation of the forces and moments on a slender fuselage and vertical fin penetrating lateral gusts (PDF), NACATechnical Note 3805 Page 3
- Beerinder Singh; Inderjit Chopra (September 2008), "Insect-Based Hover-Capable Flapping Wings for Micro Air Vehicles: Experiments and Analysis", AIAA Journal, 46 (9): 2115–2135, doi:10.2514/1.28192
- L.M. Laudanski (July 2000), "Random disturbances, airplane loads and its fatigue life", Probabilistic Engineering Mechanics, 15 (3): 233–240,
External links
- E.C. Pike, ed. (1971), Manual on Aeroelasticity. Subject and author index (PDF), NATO AGARD Report 578[permanent dead link] Page 13.
- Küssner function, Georgia Institute of Technology, archived from the originalon September 4, 2006, retrieved 10 March 2009
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