The present invention relates to a duct for a ship. A duct main body is installed between a propeller and a stern of a ship. An upper end or lower end of the duct main body is positioned at 20 percent or more or less of propeller diameter with respect to an axis of the propeller. The shape of the duct at a portion attached to the stern has an angle of attack to reduce the speed of flow. Therefore, the duct for a ship can generate pressure recovery on the stern side and increase propeller efficiency by varying the shapes of the upper end and the lower end of the duct main body.

    본 발명은 선박용 덕트에 관한 것으로, 선체의 선미와 프로펠러의 사이에 덕트 본체가 설치되며, 상기 덕트 본체의 상단 또는 하단이 프로펠러 축을 중심으로 프로펠러 직경의 -20%∼+20% 위치에 배치되고, 선미에 부착되는 부분의 덕트 형상을 유동의 속도를 감소시킬 수 있도록 받음 각을 가지도록 구성함으로써, 선미 측 압력 회복이 일어나도록 하고, 덕트 본체 상단과 하단의 형상을 상이하게 구성하여 추진 효율을 더욱 높일 수 있다.


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    Title :

    DUCT FOR SHIP


    Additional title:

    선박용 덕트


    Contributors:

    Publication date :

    2015-07-07


    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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