The progress in propulsion system noise reduction is reviewed. The noise technology areas discussed include: fan noise; advances in suppression including conventional acoustic treatment, high Mach number inlets, and wing shielding; engine core noise; flap noise from both under-the-wing and over-the-wing powered-lift systems; supersonic jet noise suppression; and the NASA program in noise prediction.


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    Title :

    Propulsion system noise reduction


    Contributors:

    Published in:

    Publication date :

    1975-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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