US 11,952,136 B2
Method for manufacturing an acoustic panel having a capsular skin, and acoustic panel incorporating such a skin
Alain Porte, Toulouse (FR); Jacques Lalane, Toulouse (FR); Florian Ravise, Toulouse (FR); and Franck Dobigeon, Toulouse (FR)
Assigned to Airbus Operations SAS, Toulouse (FR)
Filed by Airbus Operations SAS, Toulouse (FR)
Filed on Jul. 28, 2021, as Appl. No. 17/387,529.
Claims priority of application No. 2008179 (FR), filed on Jul. 31, 2020.
Prior Publication US 2022/0097863 A1, Mar. 31, 2022
Int. Cl. B64D 29/00 (2006.01); B29D 99/00 (2010.01); B29L 31/30 (2006.01); F02C 7/045 (2006.01); F02C 7/24 (2006.01); F02K 1/82 (2006.01); G10K 11/162 (2006.01)
CPC B64D 29/00 (2013.01) [B29D 99/0021 (2013.01); F02C 7/045 (2013.01); F02C 7/24 (2013.01); F02K 1/827 (2013.01); G10K 11/162 (2013.01); B29L 2031/3076 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An acoustic panel comprising: a cellular structure having a first frontal face and a second frontal face, between which there extend cells, said cells opening at least onto the first frontal face of the structure, a capsular skin fastened to the first frontal face of the cellular structure next to a plurality of cells of said cellular structure, said capsular skin comprising a continuous layer of material, in one piece, forming capsules that extend into the cellular structure, wherein the continuous layer of material comprises mutually independent wire cloth elements in an upper part of each capsule and does not have polymerizable material at the apex of the capsules, wherein the capsular skin incorporates a channel in a vicinity of the apex of each capsule formed by one or more meshes of the wire cloth elements, the capsular skin not having wire cloth away from the upper parts of the capsules, and a resistive skin fastened to the capsular skin, the capsular skin being obtained by molding the layer of material which includes a polymerizable material away from the apex in a mold comprising a plate and a plurality of raised elements connected to and protruding from the plate, each of the raised elements having a shape of the capsules, and the mold being provided with the layer of material arranged on the first frontal face of the cellular structure before the material is polymerized, the polymerization taking place in situ, wherein the capsular skin adheres directly to the first frontal face of the cellular structure.