Patent ID: 9260972
Filing Date: 2016-02-16
CPC Classification: F01D,F05D,Y02T

Claim Text:
1. A turbine airfoil comprising: a suction sidewall and a pressure sidewall, each sidewall extending spanwise from an airfoil base and extending chordwise between a leading edge and a trailing edge; a tip wall extending chordwise from the leading edge to the trailing edge and joining respective outer spanwise ends of the suction and pressure sidewalls; and a plurality of tip leakage control channels distributed across at least a chordwise portion of the tip wall between the airfoil leading edge and the airfoil trailing edge, each channel recessed into an outer surface of the tip wall, an inlet of each channel beginning proximate a junction of the airfoil pressure sidewall and the tip wall, an outlet of each channel terminating at a recessed portion of a junction of the tip wall and the suction sidewall, and a portion of each channel curved toward the trailing edge from the inlet to the outlet.