Disclosed is a ship having a propeller for reducing underwater radiated noises. The ship having a propeller for reducing underwater radiated noises according to one embodiment of the present invention comprises: a hull; and a propeller for reducing underwater radiated noises, which is mounted on a rear side of the hull to reduce underwater radiated noises produced by cavitation and generate propulsive force for operating the hull, wherein the propeller for reducing underwater radiated noises includes: a rotating shaft connected to the hull; a propeller joined to the rotating shaft and rotated by the rotating shaft to generate propulsive force for operating the hull, wherein the propeller has a plurality of rotational blades; and a blade surface roughness increasing unit arranged on a tip area of at least any one of rotational blades and the hull to selectively increase surface roughness on the corresponding tip area in order to suppress tip vortex cavitation. Accordingly, the underwater radiated noises generated by cavitation occurring when the propeller rotates can be effectively reduced.

    수중 방사소음 감소용 추진체를 구비하는 선박이 개시된다. 본 발명의 일 실시예에 따른 수중 방사소음 감소용 추진체를 구비하는 선박은, 선체; 및 선체의 후미에 탑재되며, 캐비테이션(cavitation)에 의해 발생하는 수중 방사소음을 감소시키면서 선체의 운항을 위한 추진력을 발생시키는 수중 방사소음 감소용 추진체를 포함하며, 수중 방사소음 감소용 추진체는, 선체와 연결되는 로테이팅 샤프트(rotating shaft); 로테이팅 샤프트에 결합하며, 로테이팅 샤프트에 의해 회전하면서 선체의 운항을 위한 추진력을 발생시키되 복수 개의 회전날개를 구비하는 프로펠러; 및 회전날개들 중 적어도 어느 하나의 단부 영역(tip area)과 선체에 마련되되 팁 보텍스 캐비테이션(tip vortex cavitation)의 억제를 위하여 해당 단부 영역의 표면 거칠기를 선택적으로 증가시키는 날개 표면 거칠기 증가부를 포함한다.


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    Titel :

    Ship with a noise decrease propeller assembly


    Weitere Titelangaben:

    수중 방사소음 감소용 추진체를 구비하는 선박


    Beteiligte:
    LEE TAE GOO (Autor:in) / SONG CHI SU (Autor:in) / LEE KI SEUNG (Autor:in) / LEE YONG CHUL (Autor:in)

    Erscheinungsdatum :

    15.04.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63G OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS , Angriffs- oder Verteidigungsanordnungen auf Schiffen



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