Whale tail hits the road

The rudiments of cycloidal propulsion - a paddle-wheel, for example - were being seriously investigated at least as far back as the 1920s. But practical performance - in terms of improved performance - has been a long time coming. ItÕs finally here. After two years of Research and Development, Whale Tail Systems (WTS) has developed a cycloidal driven foil propulsor, called Whale Tail Wheel ¨