Vertical-axis wind turbine: A modified design

S.A. Tabassum and S.D. Probert

Applied Energy, 1987, vol. 28, issue 1, 59-67

Abstract: Parts of each Bach-type blade of a conventional Savonius rotor have been replaced by four flaps. These flaps open when moving into the wind, so the drag on the blade is then reduced. Thus approximately a 35% increase in average static torque has been achieved relative to that obtained with the original rotor of similar geometry, both experiencing an undisturbed wind of 6·67 m s -1. The torque developed over the whole rotation is positive, which is not the case with the conventional rotor.

Date: 1987
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