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:

    Publication date :

    1985-07-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :


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