US 12,326,099 B2
Bathtub seal integrated into CMC vane load path
David J. Wasserman, Hamden, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Aug. 21, 2023, as Appl. No. 18/452,912.
Prior Publication US 2025/0067182 A1, Feb. 27, 2025
Int. Cl. F01D 5/18 (2006.01); F01D 5/28 (2006.01); F02C 7/28 (2006.01)
CPC F01D 5/18 (2013.01) [F01D 5/282 (2013.01); F02C 7/28 (2013.01); F05D 2260/232 (2013.01); F05D 2300/6033 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vane assembly comprising:
a vane has an outer platform with a mount structure and an airfoil extending inwardly from the mount structure and formed of ceramic matrix composites (“CMC”), the vane having an internal cooling chamber;
a metal baffle received within said internal cooling chamber and extending beyond said platform, a bathtub seal, having a central portion receiving said metal baffle, said metal baffle having a central chamber and cooling air holes to deliver cooling air into said internal cooling chamber, said bathtub seal having an inner wall and an outer wall outward of said metal baffle, and said inner wall, said outer wall and a bottom wall defining a bathtub seal chamber, said bottom wall in contact with an upper surface of said vane, and said vane connected to said outer wall, and a static structure received within said bathtub seal chamber; and
said bottom wall being in contact with the upper surface of the vane over at least 75% of an overall surface area of the upper surface of the vane.