A portable normal incidence interferometer is developed, which allows determining the acoustic characteristics of the full-scale liners of an aircraft engine. Studies of large sound-absorbing panels used for lining the aircraft engine ducts are carried out. It is demonstrated that the panels have uniform acoustic characteristics in azimuthal direction.


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    Title :

    Estimation of Azimuthal Uniformity of Acoustic Characteristics of the Sound-Absorbing Liner for an Aircraft Engine


    Additional title:

    Russ. Aeronaut.


    Contributors:

    Published in:

    Russian Aeronautics ; 63 , 1 ; 89-94


    Publication date :

    2020-01-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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