US 11,674,405 B2
Abradable insert with lattice structure
Steven Douglas Johnson, Milford, OH (US); and Neelesh Nandkumar Sarawate, Niskayuna, NY (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Aug. 30, 2021, as Appl. No. 17/461,142.
Prior Publication US 2023/0060175 A1, Mar. 2, 2023
Int. Cl. F01D 11/12 (2006.01)
CPC F01D 11/125 (2013.01) [F05D 2220/32 (2013.01); F05D 2230/31 (2013.01); F05D 2240/55 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An abradable insert for a gas turbine engine, the abradable insert comprising:
a base layer;
a lattice layer connected to the base layer, wherein the lattice layer comprises a series of walls that define a plurality of cells; and
a sheet layer connected to the lattice layer on an opposite side on the lattice layer from the base layer, wherein the sheet layer is curved and includes a direction of concavity that points away from the base layer;
an intermediate sheet layer, wherein the intermediate sheet layer is disposed between the sheet layer and the base layer, wherein the intermediate sheet layer divides the plurality of cells into a first layer of cells and a second layer of cells;
wherein the sheet layer, the intermediate sheet layer, or both comprise a plurality of dimples, wherein each dimple of the plurality of dimples is aligned with a cell of the plurality of cells.