Patent ID: 7921654

Claim:
A turbine stator vane for use in a gas turbine engine, the vane comprising: an inner diameter endwall and an outer diameter endwall; an airfoil extending between the inner and the outer diameter endwalls; a showerhead arrangement includes film cooling holes in a lower half of a leading edge oriented to direct cooling air upward, and film cooling holes in an upper half of the leading edge oriented to direct cooling air downward; a row of exit cooling slots on the trailing edge region of the airfoil; a slanted rib slants toward the trailing edge from the outer endwall to the inner endwall, the slanted rib extending between the outer diameter endwall and the inner diameter endwall and separating a leading edge cavity within the airfoil from a trailing edge cavity; a leading edge impingement tube secured within the leading edge cavity; a trailing edge impingement tube secured within the trailing edge cavity; the row of exit cooling slots being connected directly to the trailing edge cavity; and, cooling air supply means to supply compressed cooling air to the leading edge cavity and the trailing edge cavity.