THE EFFECT OF COMPRESSIBILITY FOR DISPLACEMENT NOISE FROM THE HELICOPTER ROTOR
Abstract
The problem of noise generation of rotor due to the thickness of blades - displacement noise is considered. The method of calculating the displacement noise, which is based on linear acoustic theory for the changes in the effective thickness of the blade over time due to the compressibility of the flow are described.
About the Authors
B. S. Kritskiy
ЦАГИ им. проф. Н.Е. Жуковского
Russian Federation
Russian Federation
R. M. Mirgazov
ЦАГИ им. проф. Н.Е. Жуковского
Russian Federation
Russian Federation
A. A. Nikolskiy
ЦАГИ им. проф. Н.Е. Жуковского
Russian Federation
Russian Federation
References
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3. Baskin V.Eh. Akusticheskoe davlenie, vyzyvaemoe vintom vertoleta pri gorizontal'nom polete. Trudih CAGI. 1972. Issue 1373. (In Russian).
4. Schmitz F.H., Boxwell D.A. In-Flight Far-field Measurement of Helicopter Impulsive Noise. 32nd Annual National Forum AHS Preprint. 1976. № 1062.
Review
For citations:
Kritskiy B.S., Mirgazov R.M., Nikolskiy A.A. THE EFFECT OF COMPRESSIBILITY FOR DISPLACEMENT NOISE FROM THE HELICOPTER ROTOR. Civil Aviation High Technologies. 2015;(212):45-50. (In Russ.)
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