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Gas turbine bucket wall thickness control

United States Patent

October 15, 2002
View the Complete Patent at the US Patent & Trademark Office
A core for use in casting a turbine bucket including serpentine cooling passages is divided into two pieces including a leading edge core section and a trailing edge core section. Wall thicknesses at the leading edge and the trailing edge of the turbine bucket can be controlled independent of each other by separately positioning the leading edge core section and the trailing edge core section in the casting die. The controlled leading and trailing edge thicknesses can thus be optimized for efficient cooling, resulting in more efficient turbine operation.
Stathopoulos; Dimitrios (Glenmont, NY), Xu; Liming (Greenville, SC), Lewis; Doyle C. (Greer, SC)
General Electric Company (Schenectady, NY)
09/ 923,915
August 8, 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.