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Second-stage turbine bucket airfoil

United States Patent

September 17, 2002
View the Complete Patent at the US Patent & Trademark Office
The second-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinate values defining the airfoil profile at each distance Z. The X and Y values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket. The second-stage wheel has sixty buckets.
Wang; John Zhiqiang (Greenville, SC), By; Robert Romany (Simpsonville, SC), Sims; Calvin L. (Mauldin, SC), Hyde; Susan Marie (Piedmont, SC)
General Electric Company (Schenectady, NY)
09/ 892,911
June 28, 2001
This invention was made with Government support under Contract No. DE-FC21-95MC31176 awarded by the Department of Energy. The Government has certain rights in this invention.