| 摘要 |
A waterjet-driven boat (10) has a reversing bucket (14) for controlling forward/reverse thrust and a rotatable nozzle (18) for controlling sideward forces. A bucket position sensor (46,48) is connected to the reversing bucket, and the bucket is controlled usi the output of the position sensor to enable the bucket to be automatically moved to a neutral thrust position. Similarly, a nozzle position sensor (56) is connected to the nozzle, and the nozzle is controlled using the output of the nozzle position sensor so that the nozzle may be automatically returned to a zero sideward force position. A joystick (20) with two axes of motion may be used to control both the bucket and the nozzle. The joystick has built-in centering forces that automatically return it to a neutral position, causing both the bucket and nozzle to return to their neutral positions.
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