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Minimum Friction at Each of the Contact Points |
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The conventional Lift type turbines spin faster than wind speed and they generate frictions in the multiple contact points. However, Edona's turbine that uses Drag type that does not exert as much force in the shaft (C) as the Lift type. Also, the outer edges of the shaft (A, B) only control the direction of sail, as such, it does not contribute to overall frictions. |
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There is no friction on Shaft (C) as it moves with the wind direction at low speed not requiring a high quality bearing parts. There are small frictions in Shaft A and B, however, as they move in the opposite direction (αβ, βα) cancelling each other’s friction and enhance the movement of Shaft (C) along the groove. |
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Minimum Requirement of Parts |
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The structure of Edona Turbine is designed in such a way that |
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