Design and fabrication of NACA 0018 straight bladed vertical axis wind ...
The wind turbines basically are of two types, Horizontal Axis Wind Turbine (HAWT) and Vertical Axis Wind Turbine (VAWT). The main point of difference between the two is the position of their axis of rotation. When wind blows over the VAWT, only a fractional part of the blades generates the torque whereas the remaining parts simply rotate.