Patent ID: 9683443
Date: 2017-06-20
CPC Classifications: B23P,F01D,F05D,Y10T

Claim:
1. A method comprising: fabricating an airfoil preform having a slotted forward end and a continuous trailing end; coupling the slotted forward end of the airfoil preform to an airfoil core insert; applying a ceramic matrix composite covering to cover the slots of the airfoil preform; and removing the continuous trailing end of the airfoil preform to expose the slots; wherein: the fabricating step comprises providing a cooling passage preform having a spanwise extending trailing end portion and a plurality of flow dividing members projecting from the spanwise extending trailing end portion that define cooling passages therebetween; the coupling step comprises coupling a cooling delivery core to a forward end of the cooling passage preform to close a forward end of the cooling passages; the applying step comprises covering the cooling passages with a ceramic matrix material; and the removing step comprises trimming the spanwise extending trailing end portion of the cooling passage preform to expose the cooling passages.