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Third-stage turbine bucket airfoil

United States Patent

November 5, 2002
View the Complete Patent at the US Patent & Trademark Office
The third-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 coordinates 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.
Pirolla; Peter Paul (Greenville, SC), Siden; Gunnar Leif (Greenville, SC), Humanchuk; David John (Simpsonville, SC), Brassfield; Steven Robert (Cincinnati, OH), Wilson; Paul Stuart (New Richmond, OH)
General Electric Company (Schenectady, NY)
09/ 886,406
June 22, 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.