Patent ID: 6929445

Claim:
A turbine nozzle comprising: a hollow vane having opposite pressure and suction sides extending in span between opposite outer and inner bands and extending in chord between opposite leading and trailing edges; said pressure and suction sides being imperforate except for a row of trailing edge outlets extending through said pressure side adjacent said trailing edge; said outer band having an outer plenum including an inlet for receiving compressed air, and said inner band having an inner plenum including an outlet, and an aft flange spaced from said inner plenum to define an aft recess outside said inner plenum; said vane further including forward, aft, and middle flow channels extending between said outer and inner bands; said forward channel being disposed behind said leading edge in flow communication with said outer and inner plenums; said middle channel being disposed behind said forward channel in flow communication with said outer and inner plenums; and said aft channel being disposed behind said middle channel in front of said trailing edge in flow communication with said outer plenum, said trailing edge outlets, and said aft recess.