Blades of fans, generators, hydroelectric generators

Compared to blades of steam and gas turbines, the blades of hydroturbines operate in an environment with lower speeds, but higher pressures

Here, the length of the blade is small relative to its width, and sometimes the width is greater than the length, depending on the density and specific volume of the liquid. Often, the blades of hydroturbines are welded to the disk or can be made integral with it.