It is concluded that in order to reduce outside sound level of airplane materially, it will be necessary to modify propeller to operate at low tip speeds and to have large number of blades; effective engine exhaust muffler will also be required.


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    Title :

    Problem of noise reduction with reference to light airplanes


    Additional title:

    Nat Advisory Committee Aeronautics -- Tech Note


    Contributors:


    Publication date :

    1946


    Size :

    16 pages


    Remarks:

    3 Supp sheets


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




    The problem of noise reduction with reference to light airplanes

    Theodorsen, Theodore / Regier, Arthur A | NTRS | 1946


    Experiments in external noise reduction of light airplanes

    Beranek, L.L. / Elwell, F.S. / Roberts, J.P. et al. | Engineering Index Backfile | 1950


    Experiments in External Noise Reduction of Light Airplanes

    Beranek, Leo L / Elwell, Fred S / Roberts, John P | NTRS | 1950


    Noise reduction in cabin airplanes

    Bassett, P.R. / Zand, S.J. | Engineering Index Backfile | 1934


    Light airplanes

    Engineering Index Backfile | 1931