| 摘要 |
A rotary assembly comprising a disk having recesses at its periphery; a plurality of blades carried by the disk, each blade having a blade root engaged in a corresponding recess of the disk, and a plurality of fitted platforms each mounted on the disk between two adjacent blades, each platform being a piece of sheet metal of substantially omega section having two flanks interconnected by a web and shaped so as to press against the side walls of the bottom portions of two adjacent blades, with the end portions of the flanks presenting respective setbacks which fit closely to the outlines of one side of a blade root and of the adjacent side of the wall of a recess in which the blade root is received.
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