Patent ID: 11959396
Assignee: RTX CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A gas turbine engine article comprising:
a silicon-containing ceramic wall having an external combustion gas path side and an internal side that borders a cooling air cavity, the external combustion gas path side having an associated combustion gas flow direction along the external combustion gas path side; and
an array of cooling holes extending through the silicon-containing ceramic wall and connecting the internal side with the external combustion gas path side, the cooling holes being oriented to discharge cooling air to the external combustion gas path side in a direction counter to the combustion gas flow direction, each of the cooling holes being comprised of a metering hole section of constant cross-sectional area and a surface breakout section that diverges from the metering hole section, the array including at least a first row of the cooling holes and a second row of the cooling holes, the surface breakout section of each of the cooling holes of the first row having a crescent geometry, and the surface breakout section of each of the cooling holes of the second row having a lobed geometry.