| 摘要 |
PURPOSE:To promote the reduction of power loss, by protrusively providing lobe-shaped buckets in the small thickness part of a rotor disc and providing a passage of air, inducted from the bucket, to be drilled in the rotor disc. CONSTITUTION:Buckets 21 are protrusively provided in the small thickness part of a rotor disc 2 just below a platform 10 where a moving blade 9 is provided. While a passage 22 of air, inducted in the bucket 21, is provided to be drilled in the rotor disc 2, connecting with an air passage 23 in the moving blade 9. In this way, the power loss can be reduced by decreasing fluid resistance because air is inducted from a large air chamber surrounded by a stationary blade rib and the rotor disc.
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