公开(公告)号：US20210375252A1

公开(公告)日：2021-12-02

申请号：US17330910

申请日：2021-05-26

Applicant: Airbus Operations SAS

Inventor： Alain PORTE ,  Jacques LALANE ,  Florian RAVISE ,  Franck DOBIGEON ,  Florent MERCAT

IPC: G10K11/168 ,  B32B3/12 ,  B32B3/26 ,  B32B5/02 ,  B32B3/28 ,  B64D33/02 ,  B64D29/00

Abstract: A cellular sound insulation structure and associated aircraft, a cell of which is provided with a diaphragm which includes a membrane having at least one orifice passing through a thickness of the membrane, and at least one tube surmounting the orifice and extending from a face of the membrane into one compartment of the cell, the tube comprising a free end, forming an acoustic outlet, which is positioned at a distance (p) from the base cross section of the cell. Also, a method for manufacturing such a cellular sound insulation structure, as well as to a tool for inserting a diaphragm into a cell. Such a cellular structure makes it possible to treat a wider acoustic frequency spectrum, and its acoustic dimensioning as well as its manufacture are simplified.

公开(公告)号：US20230312121A1

公开(公告)日：2023-10-05

申请号：US18191185

申请日：2023-03-28

Applicant: Airbus Operations SAS

Inventor： Manuel TEIGNE ,  Florian RAVISE ,  Laurent CALIMAN

IPC: B64D33/02 ,  F02K1/34 ,  G10K11/172

CPC classification number: B64D33/02 ,  B64D33/06 ,  G10K11/172 ,  B64D2033/0206

Abstract: An acoustic panel including first and second cellular structures, the first cellular structure including a set-back portion to form a recess dimensioned to accommodate the second cellular structure such that first faces of the first and second cellular structures, in contact with a first, acoustically resistive layer, are coplanar and that first edge faces of the first and second cellular structures are coplanar when the second edge face of the second cellular structure is in contact with the set-back portion. By virtue of the set-back portion, the first and second cellular structures are positioned correctly with respect to one another, thus contributing to an optimization of the acoustic treatment.

公开(公告)号：US20230182424A1

公开(公告)日：2023-06-15

申请号：US18076604

申请日：2022-12-07

Applicant: Airbus Operations SAS

Inventor： Jean-Christophe BOSSIS ,  Laurent CALIMAN ,  Florian RAVISE ,  Cedric LEROUEIL ,  Franck LEPRIZER

IPC: B29D24/00 ,  B29D99/00 ,  B29C70/08 ,  B29C70/88

CPC classification number: B29D24/008 ,  B29D99/0021 ,  B29C70/088 ,  B29C70/887 ,  B29L2031/7504

Abstract: A method of manufacturing an acoustic treatment panel including at least one cellular structure with at least one anchor layer at the level of at least one of its faces. The anchor layer includes at least one adhesive sheet chosen from an adhesive film or a ply of pre-impregnated adhesive fibers in contact with the cellular structure. The method of manufacture includes, before the integration of the cellular structure in an acoustic treatment panel, a step of placing the anchor layer on a support, the adhesive sheet being the last to be placed, a step of placing the cellular structure on the anchor layer in contact against the adhesive sheet, and then a step of polymerization of the anchor layer and of the cellular structure.

公开(公告)号：US20220379579A1

公开(公告)日：2022-12-01

申请号：US17824102

申请日：2022-05-25

Applicant: Airbus Operations SAS

Inventor： Jérôme COLMAGRO ,  Charles CARIOU ,  Florian RAVISE ,  Maxime GAUTHIER

IPC: B32B3/12 ,  B32B3/20 ,  B29C53/40

Abstract: A method for manufacturing a cellular structure having first and second faces, rows of cells each alternatingly having first cells, which are open in the direction of the first face, second cells, which are open in the direction of the second face, and also third cells formed between each row of cells, each row of cells comprising first and second strips of material placed against one another. The first and second strips of material are shaped by bending. By contrast to plastic deformation, shaping by bending makes it possible to expand the choice of materials and thicknesses for the first and second strips of material. An advantageous cellular structure is thus obtained as well as an acoustic absorption coating comprising such a cellular structure.

公开(公告)号：US20220293077A1

公开(公告)日：2022-09-15

申请号：US17685594

申请日：2022-03-03

Applicant: Airbus Operations SAS

Inventor： Florian RAVISE ,  Théo RICCOBENE

IPC: G10K11/168 ,  B32B3/12 ,  B32B5/18

Abstract: A method for manufacturing an acoustic absorption structure comprising a plurality of acoustic elements, each of which is positioned in one of the cells of a cellular panel. The method includes a step of manufacturing acoustic elements provided with at least two radial tongues, a step of manufacturing a cellular panel provided with slots configured to accommodate the radial tongues of each acoustic element, a step of force-fitting each acoustic element in one of the cells of the cellular panel until the radial tongues are accommodated in the slots. An acoustic absorption structure obtained using this method is provided.

公开(公告)号：US20200342843A1

公开(公告)日：2020-10-29

申请号：US16859138

申请日：2020-04-27

Applicant: Airbus Operations SAS

Inventor： Denis BROSSARD ,  Florian RAVISE

IPC: G10K11/168 ,  F02K1/34 ,  B64D27/18

Abstract: A method for manufacturing an acoustic absorption structure including an acoustically resistive layer, a cellular structure, a reflective layer and a plurality of acoustic elements positioned in cavities produced in the cellular structure. This method comprises steps of depositing fiber plies on a contact surface of the cellular structure, fitting a flexible jacket which covers a stack composed of the acoustically resistive layer, the cellular structure and the fiber plies, which is tightly linked with the deposition surface all around the stack, consolidating the fiber plies to form the reflective layer and the fixing thereof on the cellular structure, with a caul plate being inserted between the fiber plies and the flexible jacket during the consolidation step.

公开(公告)号：US20200164998A1

公开(公告)日：2020-05-28

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 ,  G10K11/172 ,  G10K11/162

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.