The present invention relates to a fully movable rudder for ships having a radial bulb, which comprises: a rudder body installed in the left and right directions in front of a propeller of the lower rear part of the ship to be rotatable; and the bulb provided integrally with the rudder body at the front center of the rudder body. By using a technical configuration in which a slope inducing part for reducing vortex cavitation is provided at the upper and lower parts of the outer periphery of the bulb, it is possible to prevent gap cavitation, possible to reduce a hull resistance and reduce the stern vibration noise, and possible to improve the steering performance of the ship, as well as reduce the hub vortex and improve the propulsion efficiency.

    방사형 벌브를 구비한 선박용 전가동 러더에 관한 것으로, 선박의 하부 후방부의 프로펠러의 전방에 좌우방향으로 회전 가능하게 설치되는 러더 본체; 러더 본체의 전방 중앙에 러더 본체와 일체로 마련되는 벌브;를 포함하고, 벌브의 외주 상단부와 외주 하단부에 볼텍스 캐비테이션을 저감하는 경사유도부가 마련된 기술 구성을 통하여 갭 캐비테이션을 방지할 수 있게 되고, 선체 저항의 감소 및 선미 진동 소음의 감소를 도모할 수 있게 되고, 선박의 조정성능을 향상시킬 수 있게 됨은 물론 허브 볼텍스 감소 및 추진 효율의 향상을 도모할 수 있게 되는 것이다.


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    Title :

    FULL SPADE RUDDER HAVING DIVERGE TYPE BULB


    Additional title:

    방사형 벌브를 구비한 선박용 전가동 러더


    Publication date :

    2021-11-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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