| 摘要 |
A jet pump of a personal watercraft of the present invention includes a pump casing 10 provided with a fairing vane part including a plurality of fairing vanes 12, and the front portion of each of the fairing vanes 12 has two attack angles which are an attack angle α of the fairing vane and the front end attack angle &bgr; which is larger than the attack angle α. Thereby, the attack angle of the fairing vane is adapted to the water jet flow so that reduction of pump efficiency is suppressed. |
