| 摘要 |
A turbine moving blade cascade 30 of a turbine rotor assembly 35 has root portions of plural moving blades 13 fitted and held in a root groove circumferentially formed on the outer circumferential portion of a rotor disk 15 of a turbine rotor 14 and has a notch blade 40 fixed in a cutout portion formed in the rotor disk 15. The plural moving blades 13 are comprised of three types of moving blades which include regular blades 50 having a circumferential width determined through theoretical calculation, wide blades 51 having a circumferential width larger than the regular blades 50, and narrow blades 52 having a circumferential width smaller than the regular blades 50.
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