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The Use of Excess Engine Exit Area Over Intake Area to Reduce Zero-Lift Drag at High Supersonic Speeds

Published online by Cambridge University Press:  07 June 2016

L. C. Squire
L. C. Squire*
Affiliation:
University Engineering Laboratory, Cambridge *
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Summary

At flight speeds above about M=2 the cross-sectional area of the fully-expanded jet nozzle tends to be larger than the intake streamtube. The principle of integrating this increase in area of the propulsion unit with the usable volume in order to reduce the after-body drag of the combination is discussed and calculations are made to establish the order of the effect. It is deduced that successful integration of this type can produce worthwhile increases in lift/drag ratio.

Information

Type
Research Article
Information
Aeronautical Quarterly , Volume 16 , Issue 3 , August 1965 , pp. 260 - 274
Copyright
Copyright © Royal Aeronautical Society. 1965

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