THE EFFECT OF COMPRESSIBILITY FOR DISPLACEMENT NOISE FROM THE HELICOPTER ROTOR

THE EFFECT OF COMPRESSIBILITY FOR DISPLACEMENT NOISE FROM THE HELICOPTER ROTOR

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 f...

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Veröffentlicht in:Nauchnyĭ vestnik MGTU GA (Online) 2016-11 (212), p.45-50
Hauptverfasser: B. S. Kritskiy, R. M. Mirgazov, A. A. Nikolskiy
Format: Artikel
Sprache:rus
Schlagworte:
blade
compressibility
displacement noise
helicopter
rotor
sound pressure level
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Zusammenfassung: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.
ISSN:2079-0619
2542-0119