US 12,234,773 B1
Acoustically absorptive liners for passive control of unwanted acoustic modes in rotating detonation combustors
Zachary Rauch, West Lafayette, IN (US); and Carlo Scalo, West Lafayette, IN (US)
Assigned to Hysonic Technologies, LLC, West Lafayette, IN (US)
Filed by HySonic Technologies, LLC, West Lafayette, IN (US)
Filed on Jan. 18, 2023, as Appl. No. 18/098,575.
Claims priority of provisional application 63/300,339, filed on Jan. 18, 2022.
Int. Cl. F02C 7/24 (2006.01); F02C 5/02 (2006.01); F23R 3/56 (2006.01); F23R 7/00 (2006.01)
CPC F02C 7/24 (2013.01) [F02C 5/02 (2013.01); F23R 3/56 (2013.01); F23R 7/00 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An acoustically absorptive liner device for a rotating detonation combustor, the acoustically absorptive liner device comprising:
a cylindrically shaped body, the cylindrically shaped body comprising an outer surface, an inner surface, a first open end, and a second open end; and
a plurality of Helmholtz resonators formed in said cylindrically shaped body, wherein each said Helmholtz resonator comprises a cylindrically shaped cavity open to said outer surface and having a rim coincident with said outer surface and at least one cylindrically shaped pore open at a first end to said cylindrically shaped cavity and open at a second end to said inner surface, thereby forming an acoustic conduit between said inner surface and said outer surface.