To provide a stern structure capable of further improving propulsion performance using a bilge vortex.SOLUTION: A stern structure 1 includes a stern boss 3 located in front of a propeller 5, a fan-shaped duct 6 provided on the stern boss 3 so as to cover a space above the stern boss 3, and a fin 7 provided on the stern boss 3 so as to protrude sideways from the stern boss 3 to generate thrust by using an obliquely downward flow. The entire fin 7 in the vertical direction is located below the duct 6 and at least a part of the fin 7 in the ship longitudinal direction is located in front of the duct 6 so that the obliquely downward flow toward the fin 7 turns into the flow going into the duct 6.SELECTED DRAWING: Figure 1

    【課題】ビルジ渦を利用して推進性能をさらに向上させることができる船尾構造を提供する。【解決手段】船尾構造1は、プロペラ5の前方に位置する船尾ボス3と、船尾ボス3の上方の空間を囲うように船尾ボス3に設けられた扇形のダクト6と、船尾ボス3から横向きに突出するように船尾ボス3に設けられた、斜め下向きの流れを利用して推力を発生させるフィン7を含む。フィン7へ向かう斜め下向きの流れがダクト6内へ向かう流れに変わるように、上下方向においてフィン7の全体がダクト6の下方に位置するとともに船長方向においてフィン7の少なくとも一部がダクト6の前方に位置する。【選択図】図1


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    Title :

    STERN STRUCTURE


    Additional title:

    船尾構造


    Contributors:

    Publication date :

    2021-06-17


    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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