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Composite turbine bucket assembly

United States Patent

May 20, 2014
View the Complete Patent at the US Patent & Trademark Office
A composite turbine blade assembly includes a ceramic blade including an airfoil portion, a shank portion and an attachment portion; and a transition assembly adapted to attach the ceramic blade to a turbine disk or rotor, the transition assembly including first and second transition components clamped together, trapping said ceramic airfoil therebetween. Interior surfaces of the first and second transition portions are formed to mate with the shank portion and the attachment portion of the ceramic blade, and exterior surfaces of said first and second transition components are formed to include an attachment feature enabling the transition assembly to be attached to the turbine rotor or disk.
Liotta; Gary Charles (Simpsonville, SC), Garcia-Crespo; Andres (Greenville, SC)
General Electric Company (Schenectady, NY)
12/ 754,689
April 6, 2010
This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in the invention.