| 摘要 |
A rotor disc 2 is provided with blade receiving recesses 40 at its outer periphery. The disc 2 has an internal cavity 34 for conveying cooling air to blades 4 retained in the recesses 40. Each blade-receiving recess 40 intersects the cavity 34 to provide communication between the cavity 34 and the recesses 40. The disc 2 may be made from separate disc components 12, 14 which define the cavity 34 between them.
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