| 摘要 |
PROBLEM TO BE SOLVED: To provide an aerofoil section for a third step nozzle of a gas turbine. SOLUTION: The third step nozzle 22 has an aerofoil section profile substantially in accordance with the Cartesian coordinate values of X, Y and Z set forth in table I. X and Y values in the table I are shown in inch, an aerofoil section profile section 32 in each distance Z is determined, and Z is a dimensionless value from 0 to 1 that can be converted to the Z distance expressed in inch by multiplying Z value by a height of the aerofoil section expressed in inch. The profile sections at distance Z are smoothly interconnected to form a complete aerofoil section shape. The X and Y distances can be extended or contracted to obtain an extended or contracted aerofoil section for a nozzle. A reference aerofoil section given in X, Y and Z distances lies in an envelope of±0.100 inches. COPYRIGHT: (C)2004,JPO&NCIPI
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