公开(公告)号：US20240253803A1

公开(公告)日：2024-08-01

申请号：US18425129

申请日：2024-01-29

申请人： Airbus SAS ,  Airbus Operations SAS

发明人： François PONS ,  Laurent CAZEAUX ,  Arnulfo CARAZO MENDEZ ,  Florent MERCAT ,  Alexandre BELLANGER ,  Laurent PRESSEQ ,  Maxime GAUTHIER ,  Manuel TEIGNE ,  Philippe WESSEL ,  Joelle BONNEFONT

IPC分类号： B64D33/02

CPC分类号： B64D33/02 ,  B64D2033/0206

摘要： An alveolar structure of an acoustic damping panel which is configured for damping at least one sound wave of a sound frequency, wherein the alveolar structure comprises at least one attached element, separate from partitions, and configured for vibrating at a frequency substantially equal to the sound frequency of the sound wave to be damped. Also a method for producing such an alveolar structure, an acoustic damping panel comprising at least one such alveolar structure, and an aircraft comprising at least one such acoustic damping panel.

公开(公告)号：US20240253802A1

公开(公告)日：2024-08-01

申请号：US18425100

申请日：2024-01-29

申请人： Airbus SAS ,  Airbus Operations SAS

发明人： François PONS ,  Laurent CAZEAUX ,  Arnulfo CARAZO MENDEZ ,  Florent MERCAT ,  Alexandre BELLANGER ,  Laurent PRESSEQ ,  Maxime GAUTHIER ,  Manuel TEIGNE ,  Philippe WESSEL ,  Joelle BONNEFONT

IPC分类号： B64D33/02

CPC分类号： B64D33/02 ,  B64D2033/0206

摘要： An alveolar structure of an acoustic damping panel which is configured for damping at least one sound wave at a sound frequency, wherein the alveolar structure comprises at least one partition provided with at least one cavity configured such that the partition vibrates at a vibrational frequency substantially equal to the sound frequency of the sound wave to be damped. Also a method for producing such an alveolar structure, an acoustic damping panel comprising at least one such alveolar structure, and an aircraft comprising at least one such acoustic damping panel.

公开(公告)号：US20210375252A1

公开(公告)日：2021-12-02

申请号：US17330910

申请日：2021-05-26

申请人： Airbus Operations SAS

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

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

摘要： 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：US20230088770A1

公开(公告)日：2023-03-23

申请号：US17940077

申请日：2022-09-08

申请人： Airbus Operations SAS

发明人： Florent MERCAT ,  Florian RAVISE

IPC分类号： B32B3/12 ,  F02K1/34 ,  G10K11/168

摘要： An acoustic treatment panel includes at least one acoustically resistive layer, a reflective layer and at least one cellular structure interposed between the acoustically resistive layer and the reflective layer. The cellular structure includes cylindrical and identical main tubes which are closed at one end by the acoustically resistive layer and at the other end by the reflective layer, spacer zones between the main tubes, the spacer zones being sealed relative to one another, cutouts made at an end of certain main tubes, in contact with the reflective layer, and/or secondary tubes positioned in the main tubes and/or in the spacer zones, the cutouts and/or the secondary tubes being configured to generate acoustic cells of different dimensions from identical main tubes.

公开(公告)号：US20210163143A1

公开(公告)日：2021-06-03

申请号：US17109021

申请日：2020-12-01

申请人： Airbus Operations SAS

发明人： Florent MERCAT ,  Jonathan BLANC ,  Wolfgang BROCHARD

IPC分类号： B64D29/00 ,  B64D27/26 ,  F02C7/24 ,  B32B3/26 ,  B32B5/18 ,  B32B5/24 ,  B32B3/12 ,  B32B9/00 ,  B32B9/04 ,  B32B15/04

摘要： An aft engine pylon fairing including a framework including lateral panels, transverse reinforcing ribs, and a heat shield linked to the framework. The heat shield has a multilayer structure comprising an insulating core configured both to constitute a thermal barrier and to damp acoustic waves, an outer skin configured to guide an aerodynamic flow and contribute to the acoustic damping, and an inner skin configured to ensure the mechanical strength of the shield. The shield multilayer structure allows the aft engine pylon fairing to contribute to the attenuation of the noise nuisances of the engine, and, also, to improve the thermal insulation conferred by the shield by allowing the use, for the insulating core of the shield, of materials having a better thermal resistance but a low mechanical rigidity, the mechanical strength being essentially ensured by the inner skin of the multilayer structure.

公开(公告)号：US20180182369A1

公开(公告)日：2018-06-28

申请号：US15848818

申请日：2017-12-20

申请人： Airbus Operations SAS

发明人： Florian RAVISE ,  Florent MERCAT

IPC分类号： G10K11/168 ,  B64C7/02 ,  B32B15/14 ,  B32B15/02 ,  B32B7/04 ,  B32B5/02

CPC分类号： G10K11/168 ,  B29K2105/20 ,  B32B5/024 ,  B32B7/04 ,  B32B15/02 ,  B32B15/14 ,  B32B2305/026 ,  B32B2307/10 ,  B64C7/02 ,  F02C7/045 ,  F02K1/827 ,  Y02T50/672

摘要： A method for obtaining a porous acoustic layer, comprising a step of deposition of a plurality of fiber wicks arranged in at least two secant directions, the width, the orientation and/or the spacing of the fiber wicks being determined as a function of the open surface ratio desired for each zone of the porous acoustic layer. A porous acoustic layer obtained according to the method, as well as an acoustic panel comprising at least one porous layer, are also disclosed.