A nacelle may comprise an acoustic panel in an inner fixed structure. The acoustic panel may comprise a top sheet having elongated perforations oriented in a circumferential direction. A low drag liner may be coupled to the top sheet. The orientation of the elongated perforations may result in a greater hoop strength for the top sheet as compared to a top sheet of similar thickness and percent open area having circular perforations.


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    Title :

    INNER FIXED STRUCTURE ACOUSTIC PANEL WITH DIRECTIONAL PERFORATIONS


    Contributors:
    YU JIA (author) / CHIOU SONG (author)

    Publication date :

    2016-07-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / B64C AEROPLANES , Flugzeuge / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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