The long-term goal of the NASA/U.S. helicopter industry program designated 'Rotonet' is the achievement of a helicopter noise signature-prediction capability on the basis of helicopter geometry and operating condition data. A prediction-validation data base is being compiled through flight testing of an MDHC 500E helicopter; the data base will encompass acoustic spectra, noise-level time histories, and effective perceived noise levels incorporating actual meteorological conditions and helicopter dynamics. An evaluation is made of the Rotonet system as currently defined, with a view to prospective developments.


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    Title :

    Prediction of full system helicopter noise for a MDHC 500E helicopter using the Rotonet program


    Contributors:

    Publication date :

    1989-04-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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