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Some experimental results of the effect of a streamwise vortex on a two-dimensional wing

Published online by Cambridge University Press:  04 July 2016

M. H. Patel  and
Q. J. Hancock
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Extract

A problem of some practical importance concerns the interference between a wing surface in a free stream and a nearby streamwise vortex. This situation can arise for example, either in a helicopter rotor system, or when concentrated vortices, which are shed from a fuselage nose or from forward canard controls, interfere with an aft lifting surface.

An approximate non-linear analytical study is described in Ref. 1 in which the three-dimensional loading on a two-dimensional non-swept wing underneath a streamwise line vortex in low speed flow (as shown in Fig. 1) is deduced. Since publication of Ref. 1 a number of linearised theoretical studies have come to light.

Type
Technical notes
Information
The Aeronautical Journal , Volume 78 , Issue 760 , April 1974 , pp. 151 - 155
Copyright
Copyright © Royal Aeronautical Society 1974 

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References

1. Hancock, G. J. Aerodynamic loading induced on a two- dimensional wing by a free vortex in incompressible flow. The Aeronautical Journal of the Royal Aeonautical Society, Vol 75. June 1971.Google Scholar
2. Smith, W. G. and Lazzeroni, F. A. Experimental and theoretical study of a rectangular wing in a vortical wake at low speed. NASA TND-339. 1960.Google Scholar
3. Lucassen, L. R. and Vodegel, H. J. G. C. Lift distribu tion and induced drag of an infinite wing perpendicu larly crossed by a free line vortex. NLR Memo VH-70-016 (1970).Google Scholar
4. Garner, H. C. (RAE). Private Communication.Google Scholar
5. Poisson-Quinton, Ph. (ONERA). Private Communication.Google Scholar
6. Griffiths, R. T. (University of Swansea). Private Com munication.Google Scholar