Patent ID: 11867089
Assignee: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. The gas turbine engine of claim 10, wherein the cooling duct includes an annular manifold arranged to extend around the inner combustor case of the combustor to define a plenum in fluid communication with the transfer passageway, an outer section that extends axially forward from the outer combustor case to the annular manifold, and inner sections spaced apart circumferentially that each extend axially aft from the annular manifold to the combustor rear inner combustor case, the outer section is located radially between the outer combustor case and the combustion liner, and the inner sections are located radially between the combustion liner and the inner combustor case of the combustor.