An acoustic flight test of six helicopters conducted by NASA, FAA, and the US Army is described. Microphone arrays were used to collect acoustic data for source noise characterization, to investigate the acoustic impacts of maneuvering flight, and to develop and evaluate noise abatement operations for helicopters on approach. Atmospheric data and vehicle state data were also collected. Noise metrics are calculated and plotted for all conditions tested. All data described are publicly available upon request.


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    Title :

    Noise Abatement Flight Test Data Report


    Contributors:
    M. E. Watts (author) / E. Greenwood (author) / C. D. Smith (author) / J. H. Stephenson (author)

    Publication date :

    2019


    Size :

    734 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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