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Sting corrections to zero-lift drag of axisymmetric bodies in transonic flow

Published online by Cambridge University Press:  04 July 2016

P. R. Viswanath  and
G. Rajendra
P. R. Viswanath
Affiliation:
Experimental Aerodynamics DivisionNational Aeronautical Laboratory, Bangalore, India
G. Rajendra
Affiliation:
Experimental Aerodynamics DivisionNational Aeronautical Laboratory, Bangalore, India
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Abstract

Experiments at transonic speeds have been performed on several boat-tailed afterbodies and sting combinations with a view to assessing sting corrections to the measured afterbody drag at transonic speeds. Measurements made included afterbody total drag and base pressure in the Mach number range of 0.6-1.0 and Reynolds number range of 8-9.5 x 106. Correlations of base pressure and boat-tail pressure drag for the sting diameter and flare effects have been proposed using dimensional arguments. The correlations provide quick and reliable estimates for corrections that can be applied to the measured zero-lift drag of axisymmetric bodies with either contoured or conical boat-tailing.

Type
Research Article
Information
The Aeronautical Journal , Volume 94 , Issue 938 , October 1990 , pp. 279 - 288
Copyright
Copyright © Royal Aeronautical Society 1990 

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