| 摘要 |
The propulsion arrangement comprises a force propeller (1) and a rear propeller (7) which counter-rotate relative to one another. The two propellers are supported on the vessel (3) at such a distance (L) from one another, viewed in the longitudinal direction of the ship, and with the rear propeller working in the flow field (8) of the forward propeller, that a gap (9) is formed between them. The rear propeller has a smaller dia. than the fore propeller. |
