Optimization of wind turbine aerodynamic performances implies solving the problem in the domains such as airfoil selection, blade rotation angle, number of blades, etc. The current article studies the effect of blade rotation angle at the flow velocity in the wind tunnel and a specific number of revolutions on the horizontal axis wind turbine –HAWT output power. The experiment involved two models of blades. Based on planning the experiment, mathematical models were created to be applied in practice. The highest number of revolutions and generator output were achieved at the velocity of
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