US 12,359,584 B1
Acoustic engine casing for gas turbine engine
Shailesh Kumar, Bangalore (IN); Jyotichandra Jingade, Bangalore (IN); Mohammed Qizar, Hyderabad (IN); Mahmoud Mansour, Phoenix, AZ (US); Michael Barton, Phoenix, AZ (US); William Schuster, Phoenix, AZ (US); John Gunaraj, Phoenix, AZ (US); David Hanson, Phoenix, AZ (US); and Swarna Sinha Srinath, Phoenix, AZ (US)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed on Jan. 3, 2024, as Appl. No. 18/403,157.
Int. Cl. F01D 11/08 (2006.01); F01D 25/04 (2006.01); F01D 25/24 (2006.01); F02C 7/24 (2006.01)
CPC F01D 11/08 (2013.01) [F01D 25/04 (2013.01); F01D 25/24 (2013.01); F02C 7/24 (2013.01); F05D 2220/32 (2013.01); F05D 2240/14 (2013.01); F05D 2260/96 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A gas turbine engine, comprising:
a rotatable component defining a rotational axis; and
an engine casing disposed about the rotatable component, the engine casing including a casing treatment comprising:
a plurality of grooves each being defined in the engine casing, extending circumferentially around the rotational axis, and having a radial groove depth relative to the rotational axis, wherein the radial groove depth is different for at least two of the grooves,
a plurality of acoustic chambers each being disposed radially outward relative to the rotational axis and from an associated groove of the plurality of grooves, wherein each acoustic chamber is radially separated from one of the associated grooves by a perforated wall, and wherein the perforated walls have varying radial positions depending on the radial groove depths,
wherein each acoustic chamber has a radial acoustic chamber depth based on the radial groove depth of the associated groove so that a total depth of each of the plurality of grooves and the associated one of the plurality of acoustic chambers is substantially the same,
wherein two adjacent grooves of the plurality of grooves are associated with a same single first acoustic chamber of the plurality of acoustic chambers and the first acoustic chamber has an axial width so that the first acoustic chamber extends axially, and radially outward from, both of the two adjacent grooves,
wherein one of the plurality of grooves axially forward from, and adjacent to, the two grooves is associated with a single second acoustic chamber of the plurality of acoustic chambers,
wherein another one of the plurality of grooves axially rearward from the two grooves is associated with a single third acoustic chamber of the plurality of acoustic chambers, and
wherein the second and third acoustic chambers respectively have the same axial width as their associated grooves, and
a fourth acoustic chamber being radially outward from a forward-most groove of the of the plurality of grooves and having the smallest axial width of any of the other acoustic chambers of the plurality of acoustic chambers.