US 12,071,217 B2
Additive manufacturing of unit cell resonator networks for acoustic damping
Jeffrey M. Mendoza, Manchester, CT (US); Julian Winkler, Glastonbury, CT (US); Craig A. Reimann, Vernon, CT (US); Kenji Homma, Glastonbury, CT (US); Paul R. Braunwart, Hebron, MA (US); Lawrence A. Binek, Glastonbury, CT (US); and Danielle L Grolman, Holden, CT (US)
Assigned to ROHR, INC., Chula Vista, CA (US)
Filed by ROHR, INC., Chula Vista, CA (US)
Filed on Mar. 10, 2022, as Appl. No. 17/691,688.
Prior Publication US 2023/0286639 A1, Sep. 14, 2023
Int. Cl. B33Y 80/00 (2015.01); B32B 3/12 (2006.01); B64C 1/40 (2006.01); G10K 11/168 (2006.01); G10K 11/172 (2006.01)
CPC B64C 1/40 (2013.01) [B32B 3/12 (2013.01); B33Y 80/00 (2014.12); G10K 11/168 (2013.01); G10K 11/172 (2013.01); B32B 2307/102 (2013.01); B32B 2605/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An additively manufactured noise attenuation panel for a structure within an aircraft structure, comprising:
a plurality of unit cells;
a plurality of disks; and
a plurality of blended transitions;
wherein the plurality of unit cells includes a first periodic structure having a first unit cell and a second unit cell;
each of the first unit cell and the second unit cell includes a central body interconnected via a plurality of lateral tubes extending from the central body, the first periodic structure forming a first lateral layer of unit cells, and the central body comprising an interior surface defining a volume;
wherein the plurality of disks includes a first disk disposed between a first volume of the first unit cell and a second volume of the second unit cell;
the first disk meters a flow of a fluid between the first volume and the second volume;
wherein the plurality of blended transitions includes a first blended transition located at an interface between the first disk and a first interior surface of the first unit cell.