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Engine Noise

Published online by Cambridge University Press:  28 July 2016

F. B. Greatrex
F. B. Greatrex*
Affiliation:
Rolls-Royce Ltd.
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Extract

The title of this paper could cover a number of interesting problems ranging from the ultrasonic scream from compressors and its (alleged) effect in producing “jet sickness,” to the noise from supersonic propellers but, since it is “in particular Jet Noise” which is under discussion, this paper deals entirely with that subject. Some new facts are presented, mostly obtained at my own firm, with the active encouragement of the Ministry of Supply, and some of their implications are discussed.

Type
Acoustics-Engine Noise
Information
The Aeronautical Journal , Volume 58 , Issue 520 , April 1954 , pp. 223 - 235
Copyright
Copyright © Royal Aeronautical Society 1954

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References

Note on page 223 * It will be noted that the measured figures differ slightly from those quoted in Fig. 1. This type of discrepancy will occur throughout this paper, wherever the actual values do not affect the argument, as it cannot always be avoided when tests have to be made piecemeal on different types of engine as they become available.

Note on page 232 * A.R.C. Paper 15623, Fig. 1.