Patent ID: 11946645
Assignee: ROLLS-ROYCE PLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. A single-piece combustor casing component for a gas turbine engine, the single-piece combustor casing component comprising:
a plurality of outlet guide vanes;
an outlet guide vane outer support coupled to a radially outward most end of the plurality of outlet guide vanes;
a pre-diffuser portion coupled to and extending axially aft from an aft end of the outlet guide vane outer support, the pre-diffuser portion defining a flow path outlet at a radially outward most end of the pre-diffuser portion, the radially outward most end of the pre-diffuser portion being aft of a forward most end of the pre-diffuser portion;
an outlet guide vane outer case portion coupled to and extending axially forward from the radially outward most end of the pre-diffuser portion;
a combustor outer casing portion, an axially forward most end of the combustor outer casing portion coupled to and extending axially aft from a radially outward most end of the outlet guide vane outer case portion, an axially aft most end of the combustor outer casing configured to connect to a turbine nozzle guide vane support structure; and
an outlet guide vane inner case portion,
wherein the combustor outer casing portion, the outlet guide vane outer case portion, and the pre-diffuser portion form an ‘S’-shaped profile to act as a spring section and allow the single-piece combustor casing component to flex during thermal expansion.