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AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL, AEROFOIL OF AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL, AND ROTOR OF AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL
AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL, AEROFOIL OF AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL, AND ROTOR OF AERODYNAMIC LIFT TYPE VERTICAL AXIS WINDMILL
PROBLEM TO BE SOLVED: To improve startability and reduce rotary oscillation of an aerodynamic lift type vertical axis windmill (1) with a simple structure that can be manufactured at low cost.SOLUTION: The chord length of each of the aerofoils 3 of the aerodynamic lift type vertical axis windmill (1) equipped with a plurality of aerofoils with streamline cross-section gradually increases from the upper end towards the lower end, and the gravity center of each aerofoil 3 is positioned below the center in the vertical direction. Then, the chord length of each aerofoil 3 of the aerodynamic lift type vertical axis windmill (1) can gradually increase nonlinearly from the upper end towards the lower end.
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