1results about "Speed/accelaration control without auxillary power" patented technology

The water sport apparatus has: a propulsion system that is configured to propel the water sport apparatus, the propulsion system having: an impeller; and a drive system that is configured to drive the impeller to propel the water sport apparatus. The water sport apparatus has a controller for controlling the propulsion system, the controller comprising a sensor system; wherein the controller is configured to: determine a speed estimate that is indicative of a speed of the water sport apparatus using sensor data determined using the sensor system; compare the speed estimate to a speed threshold; and activate the drive system to drive the impeller in response to the speed estimate being equal to or greater than the speed threshold.