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The Flight Envelope of a Helicopter

Published online by Cambridge University Press:  28 July 2016

P. R. Payne*
Affiliation:
Auster Aircraft Ltd.

Extract

The only simple method of estimating the tip speed limitations imposed on a rotor by retreating blade stall on the one hand, and compressibility losses on the other, is that given by Hafner. It suffers from the lack of accuracy always inherent in a “standard radius” method, and for present-day use a more refined approach is obviously desirable, provided that it still enables rapid estimates to be made.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1954

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References

1. Hafner,, R. (1949). The Bristol 171 Helicopter. Journal of the Royal Aeronautical Society, Vol. 53, p. 324, 1949.CrossRefGoogle Scholar
2. Payne,, P. R. (1954). A General Theory of Helicopter Rotor Dynamics. Aircraft Engineering, August 1954.CrossRefGoogle Scholar
3. Laitone,, E. V. and Lawrence, Talbot, (1953). Subsonic Compressibility Corrections for Propellors and Helicopter Rotors. Journal of the Aeronautical Sciences, October 1953.CrossRefGoogle Scholar