TRENCH COOLING OF AIRFOIL STRUCTURES

摘要

An airfoil comprises at least one wall defining a leading edge, a trailing edge, a pressure side extending between the leading edge and the trailing edge, and a suction side extending between the leading edge and the trailing edge. The airfoil is curved in three dimensions and has one or more cavities defined by an interior surface of the at least one wall. A plurality of cooling film holes extending between the cavity and at least one cooling trench located on at least one of the pressure side and the suction side, spaced from the leading edge. The at least one trench has a floor spaced from an outer surface of the airfoil. The plurality of cooling film holes extend through the floor at an angle other than perpendicular.

主权项

1. An airfoil, comprising:
at least one wall defining a leading edge, a trailing edge, a pressure side 38 extending between said leading edge and said trailing edge, and a suction side extending between said leading edge and said trailing edge; said airfoil curved in three dimensions; at least one interior cavity defined by an interior surface of said at least one wall; a plurality of cooling film holes extending between said at least one interior cavity and at least one cooling trench located on at least one of said pressure side and said suction side, spaced from said leading edge; said at least one cooling trench having a floor spaced from an outer surface 31 of said airfoil; said plurality of holes extending through said floor at an angle other than perpendicular.