A method of computing helicopter gearbox noise from design and operating data is presented. Measurements on UH-1D helicopters are used to provide a basis for this computation method. Its validation is shown by a comparison between calculated and measured noise spectrums. The method is used to quantitatively evaluate several kinds of noise-reducing design changes. (Author)


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    Title :

    Analysis of Noise Generated by UH-1 Helicopter Transmission


    Contributors:
    I. Laskin (author) / F. K. Orcutt (author) / E. E. Shipley (author)

    Publication date :

    1968


    Size :

    318 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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