Patent ID: 11913348
Assignee: RTX CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A gas turbine engine stator vane combination comprising:
a stator vane body having an airfoil with a leading edge, a trailing edge, a suction side and a pressure side, and having at least one internal cooling channel, said stator vane body being formed of ceramic matrix composite materials;
a spar received within said at least one internal cooling channel and formed of a metal, and said spar having an outer peripheral surface spaced from an inner peripheral surface of the at least one internal cooling channel to define a cooling air path, with said cooling air path having a varying cross-sectional area through the at least one internal cooling channel;
wherein said variable cross-sectional area is achieved by said spar having a variation in said outer peripheral surface, with a thinner portion leading into an outwardly first ramped portion at each of said leading edge, said trailing edge, said suction wall face and said pressure wall face of said spar to change the cross-sectional area; and
wherein there is a second ramped portion beyond said enlarged portion that ramps back to a thinner portion such that the cross-sectional area of the cooling air path decreases at the first ramped portion and increases at the second ramped portion.