It looks like a Savonius drag-based turbine with retractable sails limiting drag during return phase.
Perhaps an AWE version, a sort of Magenn with retractable blades, could be adaptable, but by losing the Magnus effect.
It looks like a Savonius drag-based turbine with retractable sails limiting drag during return phase.
Perhaps an AWE version, a sort of Magenn with retractable blades, could be adaptable, but by losing the Magnus effect.