order to increase this performance, a helical Savonius rotor with a twist of 180° is proposed. In this paper, we are … characteristics of the helical Savonius rotor. A comparison between the helical one and the conventional one shows that the maximum …

static torque from 0° to 360°, a helical Savonius rotor with a twist of 90° is proposed. In this study, tests on helical … of power for each helical Savonius rotor are measured. The performance of helical rotor with shaft between the end plates …. Helical Savonius rotor without shaft is also compared with the performance of the conventional Savonius rotor. The results …