Noise measurement and analysis program carried out on military version H-21C helicopter to determine primary noise sources and transmission paths for noise inside passenger cabin; effectiveness of acoustic designs in commercial aircraft illustrated quantitatively.


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    Title :

    Acoustic design for transport helicopters


    Additional title:

    Am Helicopter Soc -- J


    Contributors:


    Publication date :

    1957


    Size :

    8 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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