公开(公告)号：KR1020090080815A

公开(公告)日：2009-07-27

申请号：KR1020080006788

申请日：2008-01-22

Applicant: 재단법인서울대학교산학협력재단

Inventor： 이수갑 ,  박광근 ,  김태형 ,  정지영

IPC: B63B1/32

CPC classification number: Y02T70/12

Abstract: A cavitation reduction method of a fin and a rudder for a ship is provided to reduce the cavitation in thin layers occurring on a fin and a rudder by bending the front of a fin and a rudder for a ship actively according to the angle of attack, thereby to improve performance and to reduce corrosion by cavitation. A cavitation reduction method of a fin and a rudder for a ship is used for reducing cavitation by appointing the part which is 20~30 percents of the code length from the front as a front portion(21) and installing a control arm(25) for a front portion which is connected to a cam attached to a rotary shaft by a pin on the root of a steering gear, and bending the front portion actively when changing the angle of attack, thereby reducing a pressure gradient and separation on the surface of a fin and a rudder and making a flow smooth.

Abstract translation: 提供了一种用于船舶的翅片和方向舵的气蚀减少方法，以通过根据迎角来主动地弯曲船舶的翅片和船舵的前部来减少在翅片和舵上发生的薄层中的气蚀， 从而提高性能并减少气蚀引起的腐蚀。 用于船舶的翅片和方向舵的空化还原方法用于通过从前部指定代码长度为20〜30％的部分作为前部（21）并安装控制臂（25）来减少气蚀， 用于通过转向装置的根部上的销连接到附接到旋转轴的凸轮的前部，并且当改变迎角时主动弯曲前部，从而减小压力梯度和表面上的分离 翅膀和方向舵，使流动平稳。