WINDMILL Russian patent published in 1997 - IPC

FIELD: wind power engineering. SUBSTANCE: windmill has horizontal shaft 5 mounting two windwheels spaced apart and provided with blades. Windwheels are rigidly fixed on shaft 5; blades of windwheel 1 are displaced in direction of wind flow relative to blades of windwheel 2 over periphery towards rotation of windwheels through angle α found from equation , where b_max is chord of windwheel blade in its maximal sectional area; R is maximal radius of windwheel; distance between windwheels 1 and 2 corresponds to (0,6...1,8)b_max. Blades of windwheel 1 have wedging angles respective wedging angles of blades of second windwheel 2 by 2 to 10 deg. EFFECT: improved design. 2 cl, 3 dwg