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The drag of slant-based bodies of revolution

Published online by Cambridge University Press:  04 July 2016

D. J. Maull
D. J. Maull*
Affiliation:
Cambridge University, Engineering Department
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Extract

The drag of slant-based three-dimensional bodies such as the upswept rear fuselage of some aircraft (see for instance McCluney and Marshall and Peake) and car shapes (Morel) can be high and it is generally recognised that this high drag is associated with powerful longitudinal vortices in the flow direction. Morel has shown that the formation of these vortices, and therefore the drag, is a function of the slant angle of the base. His experiments were conducted with the body at zero incidence only and it appears that the effect of body incidence on the drag is unrecorded, although Bearman mentions that it has a significant effect.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 84 , Issue 833 , June 1980 , pp. 164 - 166
Copyright
Copyright © Royal Aeronautical Society 1980 

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References

1. McCluney, B. and Marshall, J. Drag development of the Belfast. Aircraft Engineering, pp 33–37, October 1967.Google Scholar
2. Peake, D. J. Controlled and uncontrolled flow separation in three dimensions. National Research Council Canada. Aero Rep LR-591, 1976.Google Scholar
3. Morel, T. The effect of base slant on the flow pattern and drag of three-dimensional bodies with blunt ends. In Aerodynamic Drag Mechanisms, pp 191–217, Plenum Press, 1978.Google Scholar
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