FIELD: wind power engineering. SUBSTANCE: screw has driving shaft with hollow bushing and mechanism for synchronizing optimum rotation positioned inside the bushing. End part of each blade of the screw is provided with streamlined guide tail having the inner space, rotation axle secured in the space, and spring-loaded, streamlined trailing-edge flap mounted on the axle of rotation. The synchronizing mechanism is provided with clutches spring-loaded from both sides. The clutches connect the blade axles with the driving shaft. EFFECT: enhanced reliability. 2 cl, 3 dwg
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