| 摘要 |
<p>A propelled object(1), and in particular a boat or floating toy, has an air propulsion system with at least one pair of air driving means (7a,7b) (11) above and towards the rear of its body, laterally disposed generally at either side of a midline of the object rearward of the static centre of gravity of the object in the vicinity of a dynamic centre of gravity of the object. Each drive is ideally a rotary bladed drive, the blades being configured to impart a forward propulsion on rotation thereof.</p> |
