Noise-source separation techniques for the extraction of the sub-dominant combustion noise from the total noise signatures obtained in static-engine tests are described. Three methods are applied to data from a static, full-scale engine test. Both 1/3-octave and narrow-band results are discussed. The results are used to assess the combustion-noise prediction capability of the Aircraft Noise Prediction Program (ANOPP). A new additional phase-angle-based discriminator for the three-signal method is also introduced.


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    Title :

    Noise-Source Separation Using Internal and Far-Field Sensors for a Full-Scale Turbofan Engine


    Contributors:

    Conference:

    15th Aeroacoustics Conference (30th AIAA Aeroacoustics Conference) ; 2009 ; Miami, FL, United States


    Publication date :

    2009-11-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :