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RESEARCH PAPERS: Additional Technical Papers

The Response of Nonlifting Airfoils to Streamwise Gusts

[+] Author and Article Information
J. H. Horlock

University of Salford, Salford, England

D. L. Hawkings

Westland Helicopters, Ltd., Yeovil, Somerset, England

J. Fluids Eng 99(1), 213-216 (Mar 01, 1977) (4 pages) doi:10.1115/1.3448525 History: Received December 15, 1976; Online October 12, 2010

Abstract

The effect of a gust parallel to the main stream on a nonlifting airfoil of finite thickness is studied for incompressible flow. General expressions are developed for the resultant unsteady flow field using thin airfoil theory. The pressure perturbation induced on an elliptic airfoil by such a convected “streamwise” gust is examined in detail, and is compared with that involved in the unsteady lift response of a flat plate at incidence in the same gust.

Copyright © 1977 by ASME
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