Patent ID: 7303376
Filing Date: 2007-12-04
Classification: F01D

Abstract:
1. A turbine airfoil, comprising: a generally elongated airfoil formed from an outer wall, a leading edge, a trailing edge, a pressure side, a suction side, a tip section at a first end, a root coupled to the airfoil at an end generally opposite the first end for supporting the airfoil and for coupling the airfoil to a disc, and at least one cooling cavity in the outer wall forming a cooling system in the airfoil; wherein the at least one cooling cavity in the outer wall extends generally spanwise from a location proximate to the root to a location proximate to the tip; and at least one hot gas receiving cavity positioned mid-chord in the airfoil, having an opening in the tip, and extending from a location proximate to the root to a location proximate to the tip.