FAN ROTOR BLADE OF JET ENGINE FOR AIRCRAFT

摘要

A fan rotor blade (1) includes a blade body (10) made from a composite material of a resin and fibers, and having a pressure surface (10a) facing one side in a rotation direction and a suction surface (10b) facing the other side in the rotation direction. A dovetail (11a) capable of being fitted into a fitting groove in a fan disk is provided in a base end of the blade body (10). In addition, the blade body is provided with a sheath (20) which is more rigid than the blade body and is fixed to the blade body in a state where the sheath covers a leading edge portion of the blade body, which is located on an upstream side in the direction of intake of external air, and the vicinity thereof. The sheath extends in the longitudinal direction of the blade body from a blade root side to a tip end side of the blade body, and a base end portion (21c) of the sheath located on the blade root side of the blade body extends to the dovetail (11a).