Thermal management of CMC articles having film holes
AssigneeGeneral Electric Company
InventorsRonald Scott Bunker, Kevin Robert Feldmann, Robert Charles Groves, II
Life of this patent
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Abstract
Engine components are provided for a gas turbine engines that generate a hot combustion gas flow. The engine component can include a substrate constructed from a CMC material and having a hot surface facing the hot combustion gas flow and a cooling surface facing a cooling fluid flow. The substrate generally defines a film hole extending through the substrate and having an inlet provided on the cooling surface, an outlet provided on the hot surface, and a passage connecting the inlet and the outlet. The engine component can also include a coating on at least a portion of the hot surface and on at least a portion of an inner surface defined within the passage.
Claims20
An engine component for a gas turbine engine generating hot combustion gas flow, comprising:
- a substrate constructed from a ceramic matrix composite (CMC) material and having a hot surface facing the hot combustion gas flow and a cooling surface facing a cooling fluid flow, wherein the substrate defines a film hole extending through the substrate and having an inlet provided on the cooling surface, an outlet provided on the hot surface, and a passage defined at least in part by an inner surface and connecting the inlet and the outlet;
- and
- a coating having a thermal conductivity that is less than a thermal conductivity of the CMC substrate, wherein the coating is on at least a portion of the hot surface and on at least a portion of the inner surface defined within the passage.
Dependencies are inferred from the claim text.