To provide a ship propulsion machine capable of suppressing the reduction of hull maneuverability due to a cave-in vortex generated near a duct.SOLUTION: A ship propulsion machine comprises a duct, a propeller arranged in the duct and installed rotatably around a rotating axis along the axial direction of the duct, and a rotation mechanism to make the propeller rotate. A plate in which multiple holes are formed extends from the duct toward the axial direction and is provided above the upper side of the duct. The plate is provided in the present propulsion machine so as to extend from the upper side of the duct and in which the multiple holes are formed. Several streams coming around along the duct decays when passing through the plate holes.SELECTED DRAWING: Figure 3

    【課題】ダクト近傍に発生する陥没渦に起因して船体の操船性が低下することを抑制する。【解決手段】船舶推進機は、ダクトと、前記ダクト内に配置され、前記ダクトの軸方向に沿った回転軸を中心に回転可能に設けられたプロペラと、前記プロペラを回転させる回転機構と、を備える。前記ダクトの上側部分には、前記ダクトから前記軸方向に延びるとともに複数の孔が形成されたプレートが設けられている。本船舶推進機では、ダクトの上側部分から延びるようにプレートが設けられており、そのプレートには複数の孔が形成されている。ダクトに沿って回り込んでくる幾つかの水流は、プレートの孔を通過する際に減衰する。【選択図】図3


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    Title :

    SHIP PROPULSION MACHINE, SHIP, AND PLATE


    Additional title:

    船舶推進機、船舶、および、プレート


    Contributors:

    Publication date :

    2024-08-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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