The effect of flight on blade surface pressures and propeller noise was reported. There were significant differences in blade surface pressures and far-field noise between static and flight conditions. The static data showed many high-intensity, tone-like peaks whereas the flight data was generally free from tones. The turbulence ingested by the propeller operating statically was dominated by long, thin eddies. In flight the scale of the turbulence was greately reduced from that observed statically.


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    Title :

    The Influence of Forward Flight on Propeller Noise


    Contributors:

    Publication date :

    1977-02-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Noise field of rotating propeller in forward flight

    Van De Vooren, A.L. / Zandbergen, P.J. | Engineering Index Backfile | 1963


    NOISE FIELD OF A ROTATING PROPELLER IN FORWARD FLIGHT

    VAN DE VOOREN / A. I. / ZANDBERGEN, P. J. | AIAA | 1963