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A Theoretical Study of Body Drag in Subcritical Axisymmetric Flow

Published online by Cambridge University Press:  07 June 2016

D F Myring*
Affiliation:
University of Salford
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Summary

A method of predicting body drag in subcritical axisymmetric flow is outlined which requires only detailed body shape, free-stream conditions and transition point to be prescribed. Results of calculations for a range of body shapes are shown essentially to confirm information in Royal Aeronautical Society Data Sheets but clearly demonstrate that fineness ratio alone is not sufficient to characterise body shape. For example, at a fixed fineness ratio of 0.18, detailed changes in body contour are shown to produce 10 per cent changes in drag coefficient.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society. 1976

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References

1 Young, A D Royal Aeronautical Society Aerodynamics Data Sheets. Engineering Sciences Data Unit.Google Scholar
2 Young, A D The calculation of the total and skin-friction drags of bodies of revolution at zero incidence. R&M 1874, 1939.Google Scholar
3 Myring, D F The profile drag of bodies of revolution in subsonic axisymmetric flow. RAE TR 72 234, 1972.Google Scholar
4 Hess, J L Smith, A M O Calculation of potential flow about arbitrary bodies. Progress in Aeronautical Sciences, Vol 8, Pergamon, 1967.Google Scholar
5 Luxton, R E Young, A D Generalised methods for the calculation of the laminar compressible boundarylayer characteristics with heat transfer and non-uniform pressure distribution. R&M 3233, 1962.Google Scholar
6 Head, M R Entrainment in the turbulent boundary layer. R&M 3152, 1960.Google Scholar
7 Myring, D F The interaction of a turbulent boundary layer and a shock at hypersonic Mach numbers. AGARD Conference Proceedings 30, 1968.Google Scholar
8 Coles, D The law of the wake in the turbulent boundary layer. Journal of Fluid Mechanics,Vol 1, p 191, 1956.Google Scholar