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The Application of the Jet Flap to Helicopter Rotors

Published online by Cambridge University Press:  26 October 2023

E J Richards  and
J P Jones
E J Richards
Affiliation:
University of Southampton, Department of Aeronautical Engineering
J P Jones
Affiliation:
University of Southampton, Department of Aeronautical Engineering

Extract

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During the course of fundamental research into noise suppression on jet engines, the need for a jet system which embodies quick mixing has become apparent, one way of doing this is by the use of a long thin peripheral slot in place of the usual circular nozzle Indeed noise measurements on such a jet unit indicate a reduction such as to make the use of pressure jets on helicopters once more feasible from the noise point of view

Type
Research Article
Information
The Journal of the Helicopter Association of Great Britain , Volume 9 , Issue 3 , January 1956 , pp. 414 - 423
Copyright
Copyright © Royal Aeronautical Society 1956

Footnotes

*

This Paper was submitted by the Authors as a written contribution for the Journal and is printed with the permission of the University of Southampton

References

E J Richards Noise measurements on a new type of helicopter tip jet University of Southampton Journ Helicopter Assn of Great Britain, Vol 9 No 3Google Scholar
Uno Ingard A review of the influence of meteorological conditions on sound propagation Journal Acoustical Society of America, Vol 25, No 3, May, 195310.1121/1.1907055CrossRefGoogle Scholar
I M Davidson The Jet Flap Journal Royal Aeronautical Society, Vol 60, January, 195610.1017/S0368393100132389CrossRefGoogle Scholar