FIELD: wind-electric power engineering. SUBSTANCE: windmill rotor has central shaft carrying top and bottom end plates, plate-blades secured on central shaft forming equal-volume sectors. Plate-blades of equal-volume sectors are formed by arc of belt radius drawn from rotor center to belt circumference with center on belt circumference. Plate-blades go beyond belt circumference and are bent at angle to belt circumference. EFFECT: improved design. 2 dwg
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