A composite blade assembly for mounting on a turbine wheel includes a ceramic airfoil and an airfoil platform. The ceramic airfoil is formed with an airfoil portion, a blade shank portion and a blade dovetail tang. The metal platform includes a platform shank and a radially inner platform dovetail. The ceramic airfoil is captured within the metal platform, such that in use, the ceramic airfoil is held within the turbine wheel independent of the metal platform.
GOVERNMENT SUPPORT CLAUSE
This invention was made with Government support under Contract No. DE-FC26-05NT42643 awarded by the Department of Energy. Accordingly, the Government has certain rights in the invention.