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ACOUSTIC TREATMENT DEVICE FOR AN AIRCRAFT TURBOJET ENGINE NACELLE

  • US 20200135160A1
  • Filed: 12/23/2019
  • Published: 04/30/2020
  • Est. Priority Date: 06/23/2017
  • Status: Active Grant
First Claim
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1. An acoustic treatment device for an inner shroud of an air inlet of an aircraft turbojet engine nacelle, the acoustic treatment device comprising;

  • an acoustic absorption structure;

    an outer skin fastened on an outer surface of the acoustic absorption structure;

    two lateral skins clasping the acoustic absorption structure, each lateral skin comprising a fastening foot; and

    fasteners, each fastening foot receiving a portion of the fasteners, wherein;

    the acoustic treatment device forms an annular crown mounted on an external periphery of the inner shroud to absorb acoustic energy originating from the inner shroud or a part connected to the inner shroud,the acoustic treatment device fastened to the inner shroud by the fasteners, andthe annular crown comprising a plurality of segments, each segment comprising the acoustic absorption structure, the outer skin and the two lateral skins, the plurality of segments connected to each other by battens.

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