Noise-source separation techniques, using three engine-internal sensors, are applied to existing static-engine test data to determine the turbine transfer function for the currently subdominant combustion noise. The results are used to assess the combustion-noise prediction capability of the Aircraft Noise Prediction Program (ANOPP) and an improvement to the combustion-noise module GECOR is suggested. The work was carried out in response to the NASA Fundamental Aeronautics Subsonic Fixed Wing Program s Reduced-Perceived-Noise Technical Challenge.


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    Title :

    Full-Scale Turbofan-Engine Turbine-Transfer Function Determination Using Three Internal Sensors


    Contributors:

    Publication date :

    2012


    Size :

    20 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English