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Second-stage turbine bucket airfoil

United States Patent

May 6, 2003
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, Y and Z 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.
Xu; Liming (Simpsonville, SC), Ahmadi; Majid (Simpsonville, SC), Humanchuk; David John (Simpsonville, SC), Moretto; Nicholas (Clifton Park, NY), Delehanty; Richard Edward (Maineville, OH)
General Electric Company (Schenectady, NY)
09/ 987,433
November 14, 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.