Patent ID: 11867402
Assignee: RTX CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A combustor assembly, comprising:
a combustion chamber having a combustion chamber length between a bulkhead and an outlet;
a liner arranged within the combustion chamber, the liner including:
a first portion and a second portion extending in a substantially axial direction, the first portion axially forward of the second portion, and
a step connecting the first portion and the second portion, the step arranged at an angle to the second portion that is less than 90° such that the step slants axially forward from the second portion to the first portion;

wherein the step joins to the first portion at a first fillet and joins to the second portion at a second fillet, the first and second fillets arranged on surfaces of the liner facing into the combustion chamber;
wherein the first portion, second portion, and step are formed as a unitary ceramic component that extends at least 50% of the combustion chamber length; and
wherein a step height is defined between the first portion and the second portion and a ratio of a radius of the second fillet to the step height is between 0.3 and 0.5.