| 摘要 |
A device for reducing the resistance of a thruster hole according to an embodiment of the present invention is a device for reducing the resistance of a thruster hole which is arranged on a ship body having a thruster hole with an impeller. The device for reducing the resistance of a thruster hole comprises: an expansion part for opening or closing the thruster hole by increasing or reducing the volume of the inside as gas comes into and out of the inside; and a volume adjusting part having one end fixed to one side of the expansion part and having the other end fixed to the thruster hole to control the volume of the expansion part. The device for reducing the resistance of a thruster hole according to the present invention allows fluid to be moved by the impeller by opening and closing the thruster hole, which is a tunnel having the impeller arranged therein, via the volume adjustment of the expansion part, and reduces the resistance of the fluid by closing the thruster hole when the impeller is not used, e.g., during voyage. In addition, energy can be reduced by filling a space in the thruster hole with seawater instead of gas to reduce weight. |
