In order the turbine stator blade system null multiple turbine stator blades which possess

摘要

PROBLEM TO BE SOLVED: To provide a turbine vane (30) having inner and outer platforms (52, 54) located substantially entirely on either the pressure side (36) or the suction side (38) of an airfoil (32).;SOLUTION: When a plurality of such vanes (30) are installed in a turbine, a seam (78) is formed by the circumferential side edge (56) of the inner and outer platforms (52, 54) and a portion of the airfoil (32) of a neighboring vane (30). During engine operation, a high pressure coolant (82) is supplied to at least one of the platforms (52, 54). The coolant (82) can leak through the seam (78). Because the seam (78) is located proximate the airfoil (32), the coolant leakage through the seam (78) can be productively used to cool a transition region (86) between the vane platforms (52, 54) and the airfoil (32). In addition to such cooling benefits, the invention improves engine efficiency and component life.;COPYRIGHT: (C)2008,JPO&INPIT