Hot gas components with compound angled cooling features and methods of manufacture

摘要

A hot gas path component including a substrate having an outer surface exposed to a stream of hot gases and an inner surface exposed to a cooling flow. One or more pair of cooling supply inlets is formed at the inner surface of the substrate for receiving the cooling air flow. One or more pair of cooling supply outlets is formed at the outer surface of the substrate for discharging the cooling air flow. A cooling flow channel extends through the substrate and between each of cooling supply inlets and the cooling supply outlets for permitting passage of the cooling air flow. Each pair of the one or more pair of cooling supply outlets is configured having complementary compound angles α and β, where α₁ and α₂ are injection angle components of the cooling flow discharged from each pair of the one or more pair of cooling supply outlets and β₁ and β₂ are compound transverse angle components of the cooling flow discharged from each pair of the one or more pair of cooling supply outlets, and wherein the transverse angle components β₁ and β₂ are of the same sign.