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Research on Aerodynamic Noise From Jets and Associated Problems

Published online by Cambridge University Press:  28 July 2016

E. J. Richards
E. J. Richards*
Affiliation:
University of Southhampton
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Summary

After two years research work in the Universities of this country and elsewhere, there is need for a comprehensive review of the present position on the suppression of aerodynamic noise from jet engines. This report outlines the fundamental understanding of the problem that has been achieved, the basic experimental work done, and the noise suppression techniques which have been suggested.

A study is made of measured noise levels on advanced types of engines and an analysis is made of reductions required and so far achieved with the proposed noise suppression devices. While the basic principles underlying noise formation, both in subsonic and supersonic jet streams are beginning to be understood, the noise reductions so far achieved are still insufficient and warrant an extended programme of research.

The report includes helicopter noise analyses with pressure and pulse jets, and touches on the problem of structural fatigue in the vicinity of a jet stream.

Type
Research Article
Information
The Aeronautical Journal , Volume 57 , Issue 509 , May 1953 , pp. 318 - 342
Copyright
Copyright © Royal Aeronautical Society 1953

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