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Quasi-steady Derivatives for the Subsonic Flow past an Oscillating Aerofoil in a Porous Wind Tunnel

Published online by Cambridge University Press:  07 June 2016

D. G. Drake
D. G. Drake*
Affiliation:
Department of Applied Mathematics, University of Liverpool
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Extract

The compressible subsonic flow about an oscillating two-dimensional aerofoil in a wind tunnel with porous walls is considered. The porous wall is assumed to exhibit the property that the ratio of the normal velocity at the wall to the pressure drop across the wall is constant. The aerodynamic derivatives are found for quasi-steady pitching motion of the aerofoil. The dependence of the derivatives on Mach number and wall porosity is displayed graphically.

Type
Research Article
Information
Aeronautical Quarterly , Volume 10 , Issue 3 , August 1959 , pp. 211 - 229
Copyright
Copyright © Royal Aeronautical Society. 1959

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References

1. Drake, D. G. The Oscillating Two-Dimensional Aerofoil between Porous Walls. The Aeronautical Quarterly, Vol. VIII, August 1957.Google Scholar
2. Woods, L. C. On the Lifting Aerofoil in a Wind Tunnel with Porous Walls. Proc. Roy. Soc. A, Vol. 242, 1957.Google Scholar
3. Howarth, L. (Editor). Modern Developments of Fluid Dynamics. High Speed Flow. Vol 1, Chapter IX. Clarendon Press, Oxford, 1953.Google Scholar
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