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Some Aspects of Noise From Supersonic Aircraft

Published online by Cambridge University Press:  28 July 2016

G. M. Lilley ,
R. Westley ,
A. H. Yates  and
J. R. Busing
G. M. Lilley
Affiliation:
Department of Aerodynamics, College of Aeronautics
R. Westley
Affiliation:
Department of Aerodynamics, College of Aeronautics
A. H. Yates
Affiliation:
Department of Aerodynamics, College of Aeronautics
J. R. Busing
Affiliation:
Department of Aerodynamics, College of Aeronautics
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Summary

The noise problem associated with an aircraft flying at supersonic speeds is shown to depend primarily on the shock wave pattern formed by the aircraft. The noise intensity received by a ground observer from a supersonic aircraft flying at high as well as low altitudes, is shown to be high, although it is of a transient nature.

A study of the shock wave patterns around an aircraft in accelerated and retarded flight is shown to lead to an explanation of the one or more booms, of short duration, heard by ground observers after an aircraft has dived at supersonic speeds.

The shock wave patterns associated with an aircraft flying in accelerated or retarded flight at transonic speeds are shown in certain cases to be very different from the corresponding patterns observed in steady flight. The significance of these results, with reference to problems of flight at supersonic speeds is briefly discussed.

Type
Research Article
Information
The Aeronautical Journal , Volume 57 , Issue 510 , June 1953 , pp. 396 - 414
Copyright
Copyright © Royal Aeronautical Society 1953

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