Aerodynamics of Gurney flaps on a single-element high-lift wing
Jeffrey, David, Zhang, Xin and Hurst, David W. (2000) Aerodynamics of Gurney flaps on a single-element high-lift wing. Journal of Aircraft, 37, (2), 295-301.
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The trailing-edge region of a single-element wing fitted with Gurney flaps has been studied. Measurements include surface pressure, force, and velocity by laser Doppler anemometry (LDA). The mean-velocity vectors and streamlines suggest a twin vortex structure downstream of the Gurney flap. Spectral analysis of the LDA data indicates that the wake consists of a von Karman vortex street of alternately shed vortices, and this flow structure is confirmed by smoke visualization of the flow downstreamof the Gurney flap. The vortex shedding increases the trailing-edge suction of the aerofoil, whereas the upstream face of the device decelerates the flow at the trailing edge of the pressure surface. These two changes result in a pressure difference acting across the trailing edge, and it is this that generates the increase in circulation.
|Subjects:||T Technology > TL Motor vehicles. Aeronautics. Astronautics|
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
|Date Deposited:||15 Mar 2006|
|Last Modified:||01 Jun 2011 01:51|
|Contributors:||Jeffrey, David (Author)
Zhang, Xin (Author)
Hurst, David W. (Author)
|Contact Email Address:||email@example.com|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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