公开(公告)号：US11676567B2

公开(公告)日：2023-06-13

申请号：US16722264

申请日：2019-12-20

Applicant: Airbus Operations SAS

Inventor： Denis Brossard ,  Laurent Caliman ,  Florian Ravise ,  Stéphane Le Clainche

IPC: G10K11/168 ,  F02K1/82 ,  B32B3/08 ,  B29D99/00 ,  G10K11/16 ,  F02C7/045 ,  B29D24/00 ,  B32B3/12

CPC classification number: G10K11/168 ,  B29D24/008 ,  B29D99/0021 ,  B32B3/08 ,  B32B3/12 ,  F02C7/045 ,  F02K1/827 ,  G10K11/16

Abstract: A method for manufacturing a sound absorption structure comprising a cellular panel, a porous layer positioned on a cellular panel first face, a reflective layer positioned on a cellular panel second face and a plurality of acoustic elements positioned in the cellular panel. The method comprises the steps of producing, for each acoustic element, a recess in the cellular panel opening out onto the first and second faces of the cellular panel, inserting the acoustic elements into their recesses, laying an anchoring layer on the second cellular panel face, curing or polymerization at a first pressure to connect each acoustic element to the cellular panel and/or to the anchoring layer, putting in place the porous layer and the reflective layer, and curing or polymerization at a second pressure to connect the porous layer and the reflective layer to the cellular panel.

公开(公告)号：US10807275B2

公开(公告)日：2020-10-20

申请号：US16421825

申请日：2019-05-24

Applicant: Airbus Operations SAS

Inventor： Denis Brossard ,  Sébastien Gohier ,  Jean-Claude Barbaud ,  Gael Perennesse

IPC: B29B9/14 ,  B29B9/10

Abstract: A toolage for manufacturing a tubular preform of fibers comprising a mold which has a deposition surface on which are superposed laps of fibers and a compacting device configured to cap the mold. The compacting device comprises first and second rings, at least one seal-tight flexible conduit linked to the first and second rings and at least one rigid link element linking the first and second rings. Such a compacting device makes it possible to greatly reduce the time for it to be installed, which makes it possible to reduce the duration of the compacting cycles.

公开(公告)号：US11572189B2

公开(公告)日：2023-02-07

申请号：US16695375

申请日：2019-11-26

Applicant: Airbus Operations SAS

Inventor： Claire Maffre ,  Jérôme Gaillardo ,  Lionel Czapla ,  Florian Ravise ,  Laurent Caliman ,  Laurent Cazeaux ,  Antoine Cousin ,  Denis Brossard

IPC: F02K1/34 ,  F02C7/24 ,  G10K11/162 ,  G10K11/172

Abstract: An acoustic absorption structure comprising a plurality of resonators. Each resonator comprises a first chamber which has a first mouthpiece delimited by an edge pressed against an inner surface of a porous zone of a skin so that the first chamber and the skin delimit a first cavity, a second chamber, in which is positioned the first chamber, which delimits, with the first chamber, a second cavity, at least one acoustic orifice passing through the first chamber, at least one drainage orifice passing through the first chamber and at least one drainage hole passing the second chamber, each drainage orifice and each drainage hole being configured to limit an accumulation of fluid in the resonator. Also, an aircraft propulsive assembly or an aircraft comprising the acoustic absorption structure are provided.