WINDMILL Russian patent published in 1998 - IPC

FIELD: wind-power engineering. SUBSTANCE: adjustable blades are mounted on bearing system for turning about horizontal axes oriented over radii of bearing system and through blade planes. Blades are trough-shaped in cross-sectional area; axis of revolution of each blade passes chord of trough crossing center of gravity of blade perpendicular to longitudinal axis of blade. Part of planes relative to axis of revolution meet condition S₁•r_S1≠S₂•r_S2, where S₁, r_S1, is area and radius of turn of other plane part center. With blade parameters set, blades automatically turn through up to 90 deg. from one stop to other one of which corresponds to vertical position and other, to horizontal one. EFFECT: provision for dispensing with blade operating mechanism; enlarged range of bearing system turning within which blades are active. 2 cl, 1 dwg