Videos for VAWT rotor kites (Magnus-effect, Darrieus, rotating ribbon, etc.). Notice that the axis on many of these vertical-axis wind turbine kites is set traverse to wind and often matching the horizon. The "V" in VAWT stands for a "vertical" that derives from wind turbines that can be set as a tower-like device with axis pointing up, but such is not a necessary condition; but the axis set normal to the wind direction is the defining parameter. [ See differently rotating kites that have rotation axis parallel nearly to the wind direction and called HAWT (gyrocopting, barrel, pinwheel, etc.) ]