| 摘要 |
<p>A thrust generating apparatus is provided that can transform a spouting water flow having a small diameter into a water flow having a large diameter, and that can be provided at the bow or the stern end. A bell-shaped nozzle is coupled to an ejection port of a pump water flow, a ring having a blade-shaped cross section is disposed inside the nozzle, and a shell-shaped cone is disposed inside the ring on the center line of a water flow. Thereby, an ejection flow is straightened, and a thrust is generated. In addition, the bottom of the cone is open, a slit is further provided at a shoulder portion of the cone forward of the ring, and the water flow inside the cone is in communication with a water flow outside the cone. Furthermore, a rotating door is provided that enables the nozzle to pivot toward a shell plating opening on a port side or a starboard side, and that closes or opens the shell plating opening in accordance with the position of the nozzle.</p> |
