An overview of the main aircraft engine noise sources is given. Special emphasis is devoted to turbomachinery/rotor noise, which plays an important role in all engine concepts appropriate to regional aircraft, such as turbofans, propellers, or new propfan engine concepts. The noise generating mechanisms, including propagation within the engine, and calculation methods used are described. Noise reduction methods are considered, with emphasis on cutoff design of turbomachines. Some noise features of counter rotating propellers and swept rotor blades are mentioned.


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    Title :

    Aircraft Engine Noise


    Contributors:

    Publication date :

    1989


    Size :

    8 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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