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TURBINE BLADE, TURBINE, AND METHOD OF TUNING NATURAL FREQUENCY OF TURBINE BLADE
TURBINE BLADE, TURBINE, AND METHOD OF TUNING NATURAL FREQUENCY OF TURBINE BLADE
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机译:涡轮叶片,涡轮机和调谐涡轮叶片固有频率的方法
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摘要
A turbine blade includes: a platform; an airfoil portion extending from the platform in a blade height direction and having a pressure surface and a suction surface extending between a leading edge and a trailing edge; a blade root portion positioned opposite to the airfoil portion across the platform in the blade height direction and having a bearing surface; and a shank positioned between the platform and the blade root portion. The shank has a cross-section which is perpendicular to the blade height direction of the airfoil portion, and in which a line segment connecting a widthwise center position of a leading-edge-side end portion of the shank and a widthwise center position of a trailing-edge-side end portion of the shank is sloped to a center line between a pressure-surface-side contour of the blade root portion and a suction-surface-side contour of the blade root portion.
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