Hydraulic turbine

Abstract

Impeller for a hydraulic turbine, comprising: a hub; and a plurality of pivotable blades extending from the hub, each pivotable blade of the plurality of pivotable blades comprising: a root located at the hub, a tip opposite the root, and a leading edge, wherein each pivotable blade of the plurality of pivotable blades is pivotable relative to the hub about a respective pivot axis, wherein a ratio of a leading edge thickness TLE to a diameter of the impeller DR is in a range of approximately 0.03 to approximately 0.35, and wherein, in at least one blade, the leading edge at the root is positioned along a radial axis of the impeller, and the leading edge at the tip is cantilevered beyond the radial axis in a circumferential direction of the impeller.