US 12,136,408 B2
Acoustic panel with 3D printed cell structure support layer
Benedict N. Hodgson, Indianapolis, IN (US); and Jeff Higbie, Indianapolis, IN (US)
Assigned to Rolls-Royce Corporation, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Apr. 29, 2022, as Appl. No. 17/661,435.
Prior Publication US 2023/0351995 A1, Nov. 2, 2023
Int. Cl. G10K 11/168 (2006.01); B32B 3/12 (2006.01); B32B 27/28 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); F02C 7/24 (2006.01)
CPC G10K 11/168 (2013.01) [B32B 3/12 (2013.01); B32B 27/288 (2013.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); B32B 2307/102 (2013.01); B32B 2605/18 (2013.01); F02C 7/24 (2013.01); F05D 2260/96 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An acoustic panel comprising:
a coversheet comprising:
an outer face;
an inner face; and
a plurality of apertures extending from the outer face to the inner face; and
a three-dimensionally (3D) printed support layer comprising a plurality of cells comprising a polymer and defining a plurality of cell openings, wherein a first side of the support layer opposite the cell openings is coincident with the inner face of the coversheet, wherein the 3D printed support layer is 3D printed directly onto the inner face of the coversheet, and
wherein the coversheet is configured to elastically deform into one or more cells of the plurality of cells of the 3D printed support layer in response to a compressive force on the outer face of the coversheet.