This paper describes a study of engine induced structural-borne noise in a single engine light aircraft. Cabin noise and fuselage vibration levels were recorded during ground tests for engine-attached, engine-detached, interior-installed, and interior-removed configurations. By comparisons of the data, engine induced structure-borne noise is shown to be a primary source of cabin noise. Corresponding fuselage vibration levels were quite high with energy concentrated mainly in the lower frequencies. A measure of the noise control effectiveness of the interior trim was also obtained.


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    Title :

    Engine induced structural-borne noise in a general aviation aircraft


    Contributors:

    Conference:

    Society of Automotive Engineers, Business Aircraft Meeting and Exposition ; 1979 ; Wichita, KS


    Publication date :

    1979-04-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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