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Stability Derivatives of Sharp Wedges in Viscous Hypersonic Flow

Published online by Cambridge University Press:  07 June 2016

W. H. Hui  and
R. A. East
W. H. Hui
Affiliation:
Department of Aeronautics and Astronautics, University of Southampton
R. A. East
Affiliation:
Department of Aeronautics and Astronautics, University of Southampton
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Summary

Using a perturbation method, the formulae for the pitching stability derivatives of sharp wedges at zero incidence in viscous hypersonic flow are obtained in closed form. The results include the effect of unsteady reflected waves from the bow shock and may be applied to any wedge provided that the bow shock is attached. The effect of viscosity of the gas is included in two parts: first, it thickens the wedge, thus introducing the concept of an effective wedge, thicker than the original wedge by a semi-vertex angle equal to the average inclination of the displacement boundary layer; secondly, it makes this effective wedge deformable. Comparison with previous theories is given.

Type
Research Article
Information
Aeronautical Quarterly , Volume 22 , Issue 2 , May 1971 , pp. 127 - 145
Copyright
Copyright © Royal Aeronautical Society. 1971

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References

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