A laboratory-based test apparatus was employed to investigate the effects of power-plant placement, engine/nacelle mass installation, and wing-to-fuselage attachment methods on propeller-induced structure-borne noise (SBN) transmission levels and their effects on noise-control measures. Data are presented showing SBN transmission is insensitive to propeller spanwise placement, however some sensitivity is seen in propeller-to-wing spacing. Installation of an engine/nacelle mass and variation in wing-to-fuselage attachments have measurable influences on SBN transmission and control measures.


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    Title :

    Installation effects on propeller wake/vortex induced structure-borne noise transmission


    Contributors:

    Publication date :

    1989-04-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English