Interior noise measurements for upsweeping and downsweeping movement of the propeller blade tips past the fuselage were made on a twin-engine airplane and on two simplified fuselage models. Changes in interior noise levels of as much as 8 dB reversal of propeller rotation direction were measured for some configurations and test conditions.


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    Title :

    Effects of Propeller Rotation Direction on Airplane Interior Noise Levels


    Contributors:
    C. M. Willis (author) / W. H. Mayes (author) / E. F. Daniels (author)

    Publication date :

    1985


    Size :

    34 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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