Patent ID: 8602727

Claim:
A turbine static nozzle airfoil including: an arcuate concave leading edge; a substantially flat trailing edge; a body portion between the leading edge and the trailing edge, the body portion having a suction side and a pressure side; wherein the leading edge has an arc radius of approximately three-fourths to approximately four-thirds of a radial height of the leading edge, wherein the leading edge includes a midpoint (Mle) and a peripheral point (Ple) and the trailing edge includes a midpoint (Mte) and a peripheral point (Pte), and a length of an arc (Lm) extending from the midpoint (Mle) of the leading edge across the suction side of the body portion to the midpoint (Mte) of the trailing edge is less than a length of an arc (Lsb) from the peripheral point (Ple) of the leading edge to the trailing edge peripheral point (Pte) across the suction side of the body.