How to judge whether a wind turbine is lift type or drag type

Horizontal axis wind turbines can be divided into two types: lift type and drag type. Lift wind turbines spin quickly, while drag wind turbines spin slowly. For wind power generation, step-up type horizontal axis wind turbines are mainly used. Most horizontal axis wind turbines have wind-facing devices that can rotate when the wind direction changes. For small wind turbines, this wind-facing device uses a tail rudder, while for large wind turbines, a transmission mechanism consisting of wind direction sensing elements and servo motors is used.