Sound pressures of first four harmonics of rotation noise from full-scale 2-blade propeller were measured and are compared with values calculated from theory: comparison made for space distribution with constant tip speed, and for fixed space angles with variable tip speed; curves given showing effect of number of blades on rotation noise. (see also Acoustical Soc Am -- J v 12 n 1 July 1940 p 173-82)


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    Title :

    Propeller rotation noise due to torque and thrust


    Additional title:

    Nat Advisory Committee Aeronautics -- Tech Note


    Contributors:


    Publication date :

    1940


    Size :

    14 pages


    Remarks:

    4 Supp Sheets, Bibliography


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




    Propeller rotation noise due to torque and thrust

    Deming, Arthur F. | TIBKAT | 1940




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