HOLDING STRUCTURE OF FAN BLADE

摘要

A disk (10) comprises a plurality of dovetail grooves (12) spaced at angular intervals in the circumferential direction and extending in the axial direction. A fan blade (20) has a dovetail part (22) axially fitted into each of the dovetail grooves and capable of transmitting a centrifugal force produced during rotation to the disk. The disk includes a flange part (14) positioned forward of the dovetail grooves and extending in the radial outer direction and further includes a ring-like retainer member (30) which is fitted between the front faces (22a) of the dovetail parts (22) and the rear face (16a) of the flange part (14) and transmits an axial forward load acting on the fan blades (20) to the disk (10) through the rear face (16a) of the flange part.