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 fan blade (20) includes a projecting part (24) positioned rearward of the dovetail part (22) and extending from the dovetail groove (12) in the circumferential outer direction. The projecting part (24) is set to such a size that the part is not interfered with the dovetail groove (12) when the dovetail part (22) is positioned on the radial inner side of the dovetail groove (12).