The present invention relates to a frictional resistance reduction device of a high-speed underwater buoyant body, comprising: a conical underwater buoyant body (10) coupled to an underwater wing (1-1) disposed in a lower part of a vessel (1) to be sunk under water; and a natural air injection device (20) generating air injection discharging the atmospheric air under the water due to a difference between internal and external pressures of the underwater buoyant body (10) by a lower pressure point generated during high speed sailing of the vessel (1), to reduce an underwater frictional resistance of the underwater buoyant body (10). Thus, the air sucked from the atmospheric air is naturally injected under the water without a separate additional power, thus reducing a frictional resistance. In particular, the difference between the internal and external pressures of the conical underwater buoyant body (10) is used as a power source for air injection, thus improving performance of a small waterplane area twin hull (SWATH) vessel by overcoming the limit of an existing forcible air discharge technology.

    본 발명의 고속 수중 부력체의 마찰저항감소장치는 선박(1)의 저부에 구비된 수중 날개(1-1)와 결합되어 수중에 잠긴 콘형 수중부력체(10), 선박(1)의 고속주행 시 발생된 저압력점에 의한 수중부력체(10)의 내.외부 압력차로 대기가 수중으로 배출되는 공기분사를 발생시켜 수중부력체(10)의 물속 마찰저항을 감소시키는 자연공기분사장치(20)로 구성됨으로써 대기로부터 흡입되는 공기가 별도의 추가 동력 없이 자연적으로 수중 분사되어 마철저항을 감소시키고, 특히 콘형 수중부력체(10)의 내,외부 압력차를 공기 분사의 동력원으로 함으로써 기존 공기강제배출 기술의 한계 극복으로 SWATH(Small Waterplane Area Twin Hull)선박의 성능을 개선하는 특징이 구현된다.


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    Title :

    Natural Air Suction type Friction Resistance Decreasing Device of High Speed Underwater Buoyancy Vessel and Ship thereby


    Additional title:

    자연공기 흡입에 의한 고속 수중 부력체의 마찰저항감소장치 및 이를 적용한 선박


    Contributors:
    JUNG CHUL MIN (author) / KIM SUN BUM (author) / PAIK BU GEUN (author) / KWON LAE UN (author)

    Publication date :

    2017-12-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F16K VALVES , Ventile



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