Patent ID: 8727730
Filing Date: 2014-05-20
Classification: F01D,F05D

Abstract:
1. A composite turbine blade assembly comprising: a ceramic blade including an airfoil portion, a shank portion and an attachment portion; and a transition assembly adapted to attach said ceramic blade to a turbine disk or rotor, the transition assembly comprising first and second metal transition components clamped together, trapping said ceramic blade therebetween, wherein interior surfaces of said first and second metal transition components are formed to mate with said shank portion and said attachment portion of said ceramic blade and to engage each other radially-inward of said shank portion; and wherein exterior surfaces of said first and second metal transition components are formed to provide an attachment feature enabling said transition assembly to be received in a slot provided in the turbine rotor or disk, wherein a radially innermost end of said attachment portion of said ceramic blade lies radially outwardly of a radially outermost end of said attachment feature of said first and second metal transition components.