Patent ID: 8118554

Claim:
A stator vane for a turbine used in a gas turbine engine, the stator vane comprising: an outer endwall and an inner endwall; an airfoil extending between the outer endwall and the inner end wall; the inner endwall having a forward endwall edge; a cooling air supply cavity formed by the inner endwall; the inner endwall edge having a slot extending from a lower side to an upper side near to a leading edge of the airfoil, a plurality of ribs to separate the endwall edge slot into a plurality of separate compartment slots; a plurality of impingement cooling holes formed in the inner endwall edge to connect the cooling air supply cavity to the plurality of separate compartment slots; and, a plurality of film cooling holes formed in the inner endwall edge to connect the plurality of separate compartment slots to an outer surface of the inner endwall edge.