Patent ID: 8366392
Filing Date: 2013-02-05
Classification: F01D,F05D

Abstract:
1. A composite turbine rotor blade comprising: an insert piece having a forward side forming a leading edge of the blade, a top end forming a blade tip for the blade, and a rear side forming a trailing edge for the blade, and a lower end having a dovetail shape, the insert piece being a single piece; a pressure side piece forming a pressure side wall for the blade with a pressure side wall cooling circuit formed within the pressure side piece; a suction side piece forming a suction side wall for the blade with a suction side wall cooling circuit formed within the suction side piece; the insert piece having a main body section with a plurality of cross-over holes; the pressure side piece or the suction side piece having a plurality of locking pins aligned with the cross-over holes; and, the pressure side piece and the suction side piece being bonded together through the locking pins with the insert piece sandwiched in-between the pressure side piece and the suction side piece to form the composite blade.