Ceramic matrix composite gas turbine vane

Details Ceramic matrix composite gas turbine vane Ceramic matrix composite gas turbine vane

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/18 (2006.01) F01D 5/28 (2006.01)

Patent

CA 2430457

A hybrid vane (50) for a gas turbine engine having a ceramic matrix composite (CMC) airfoil member (52) bonded to a substantially solid core member (54). The airfoil member and core member are cooled by a cooling fluid (58) passing through cooling passages (50) formed in the core member. The airfoil member is cooled by conductive heat transfer through the bond ((70) between the core member and the airfoil member and by convective heat transfer at the surface directly exposed to the cooling fluid. A layer of insulation (72) bonded to the external surface of the airfoil member provides both the desired outer aerodynamic contour and reduces the amount of cooling fluid required to maintain the structural integrity of the airfoil member. Each member of the hybrid vane is formulated to have a coefficient of thermal expansion and elastic modules That will minimize thermal stress during fabrication and during turbine engine operation.

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