| 摘要 |
A structure for retaining a fan blade of a turbine includes a disk having a plurality of dovetail grooves spaced at predetermined angular intervals in a circumferential direction with the grooves extending in an axial direction. Fan blades each include a dovetail part which is fitted in one of the dovetail grooves in an axial direction and capable of transmitting a centrifugal force produced during rotation to the disk. The disk further includes a flange part which is positioned in front of the dovetail grooves and extends outwardly in a radial direction. An integral ring-shape retainer member is fitted between a front surface of the dovetail part and a rear surface of the flange part of the disk and transmits an axial forward load acting on the fan blades to the disk via the rear surface of the flange part. This structure avoids overloading of releasable securing fasteners such as securing bolts while providing a cost effective structure to manufacture and assemble.
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