Patent ID: 11959422
Assignee: RTX CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 18:
19. A method for forming a seal between a combustor and a turbine section of a gas turbine engine, the method comprising:
providing the combustor comprising a combustion chamber radially defined between a first shell and a second shell, the first shell comprising an exterior side and an interior side, the first shell further comprising a first mating surface on the exterior side;
forming a first seal between an aft end of the first shell and a forward face of a first vane stage of the turbine section with a first seal assembly comprising a brush seal, the brush seal comprising a brush seal backing plate mounted to the first shell, a retaining ring, and a plurality of bristles retained between the brush seal backing plate and the retaining ring; and
directing cooling air with at least one cooling channel extending from the exterior side of the first shell to the interior side of the first shell, the at least one cooling channel comprising a groove formed in the second mating surface of the brush seal backing plate.