| 摘要 |
In a rotor blade fastening arrangement in the drum rotor of an axial flow turbomachine, the blades are fastened by means of their roots in rows in peripheral blade grooves with support indentations at the side. The blade groove provided for the first blade row is an L groove with two vertical support surfaces and one horizontal support indentation. The blade root engaging in it consists of a vertical protrusion and only one horizontal protrusion to the side.
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