公开(公告)号：US12269245B2

公开(公告)日：2025-04-08

申请号：US17940077

申请日：2022-09-08

Applicant: Airbus Operations SAS

Inventor： Florent Mercat ,  Florian Ravise

IPC: G10K11/172 ,  B32B3/12 ,  B64C1/40 ,  B64D33/02 ,  B64D33/04 ,  F02K1/82 ,  G10K11/168

Abstract: 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：US12014714B2

公开(公告)日：2024-06-18

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

CPC classification number: G10K11/168 ,  B32B3/12 ,  B32B3/266 ,  B32B3/28 ,  B32B5/024 ,  B64D29/00 ,  B64D33/02 ,  B32B2262/103 ,  B32B2307/102 ,  B32B2605/18 ,  B64D2033/0206

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.