| 摘要 |
<p>The water jet propulsion unit has a ring shaped duct (20) to provide a high speed flow to drag low pressure water through the duct (10), with a large inner stream and a small outer stream. The duct is fitted with an adjustable baffle (100) to control the thrust and force direction. The impeller has improved thrust and steering control. The baffle can be made to change its shape and setting for dynamic stability and for steering.</p> |
