Patent ID: 7762773

Claim:
A turbine airfoil, comprising: a generally elongated, hollow airfoil having a leading edge, a trailing edge, 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 a cooling system formed from at least one cavity in the elongated, hollow airfoil; a platform positioned at an intersection of the generally elongated, hollow airfoil and the root, wherein the platform includes a leading edge, a trailing edge opposite the leading edge, a pressure side edge positioned proximate to a pressure side of the generally elongated, hollow airfoil and a suction side edge positioned proximate to a suction side of the generally elongated, hollow airfoil; wherein the suction side edge is positioned at an acute angle relative to a longitudinal axis of the platform; and wherein the suction side edge is formed from at least two surfaces, a first surface positioned at an obtuse angle relative to an upper surface of the platform and a second surface positioned at an obtuse angle relative to a bottom surface of the platform and intersecting the first surface such that the first and second surfaces are positioned in different planes.