| 摘要 |
A fan rotor blade (1) is provided with a blade body (10) produced from a composite material of resin and reinforced fiber and having a pressure surface (10a) facing one side of the rotation direction and a suction surface (10b) facing the other side of the rotation direction. At the base end of this blade body (10), a dovetail (11a) capable of fitting into a fitting groove of a fan disk is provided. Further, the blade body is provided with a sheath (20) which has higher rigidity than the blade body and is affixed to the blade body while covering the vicinity of the front edge, which is located on the upstream side in the direction in which outside air is taken in, of the blade body. The sheath extends from the blade root side to the leading end side of the blade body along the longitudinal direction of the blade body, and the base end (21c), which is located on the blade root side of the blade body, of the sheath extends to the dovetail (11a). |
