Patent ID: 8794906
Filing Date: 2014-08-05
Classification: F01D,F05D

Abstract:
1. A turbine stator vane comprising: an airfoil extending between an inner diameter endwall and an outer diameter endwall; a fillet formed between the airfoil and each of the two endwalls, the fillet extending around a leading edge of the airfoil and extending along a pressure side wall and a suction side wall toward the trailing edge; a row of cooling air exit slots formed below the fillet and extending around a leading edge region of the airfoil and along the pressure side and the suction side of the airfoil; a metering holes opening into each of the cooling air exit slots to supply cooling air; and, the exit slots opening onto a surface of the endwall such that cooling air is discharged substantially parallel to the surface of the endwall to produce a layer of film cooling air on the endwall surface.