Patent ID: 8714932
Filing Date: 2014-05-06
Classification: B32B,C04B,F01D,F05D,Y02T,Y10T

Abstract:
1. A method of making a ceramic matrix composite blade comprising: laying up at least one ply of a plurality of fibrous ceramic plies in a preselected arrangement to form an airfoil and dovetail preform; laying up at least one additional ply of the plurality of fibrous ceramic plies on the airfoil and dovetail preform in a second preselected arrangement to form an integral platform preform, the integral platform being stacked on the airfoil and dovetail preform to form a non-rigidized blade preform; rigidizing the non-rigidized blade preform to form a rigidized blade preform, wherein the airfoil, dovetail and integral platform have a substantially continuous co-rigidized composite phase; and densifying the rigidized blade preform to form the ceramic matrix composite blade having an integral platform structure.