| 摘要 |
PURPOSE:To reduce thermal stress on a blade by dividing a blade effective part into a web and a back portions, and providing a high temperature gas flow passage internally. CONSTITUTION:A blade effective part is divided into a web portion 1 and a back portion 9, and molded from a ceramic material. The web portion 1 and the back portion 9 are coupled to each other with an inset 10 placed internally and a high temperature gas flow passage is formed internally. The blade effective part is fitted to a pressurized division via internal and external cylinder surfaces 2 and 3 and insulation members 4 and 5. According to the aforesaid constitution, the blade effective part can be thinned and a temperature difference between blade inside and outside can be made small, thereby the thermal stress on the blade being reduced.
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