PROBLEM TO BE SOLVED: To provide an advance/backing steering device capable of suppressing reduction of backing efficiency and capable of being made compact.SOLUTION: An advance/backing steering device comprises: a nozzle 10 for jetting water to a rear side of a travel direction of a ship; a steering duct 20 which is connected to the nozzle 10 so as to revolve freely around an axial line of a revolving axis AX1, which makes water jetted from the nozzle 10 circulate inside thereof and discharge the water with switching between a rear opening part 20a and a lower opening part 20b; and louver wings 41, 42, 43, 44 having flat parts 41b, 42b, 43b, 44b which are arranged in parallel in the travel direction on the lower opening part 20b, and rectify so that the water discharged from the lower opening part 20b flows forward of the travel direction. Front sides in the travel direction of the respective flat parts 41b, 42b, 43b, 44b are downward inclined to the horizontal face so as to form an angle in a range of 20° to 28° with the horizontal face.SELECTED DRAWING: Figure 2
【課題】後進効率の低下を抑制しつつ、小型化が可能な前後進操舵装置を提供する。【解決手段】船体の進行方向の後方に水を噴射するノズル10と、旋回軸AX1の軸線周りに旋回可能となるようにノズル10に接続され、ノズル10から噴射された水を内部に流通させて後方開口部20aと下方開口部20bとの間で切り替えて流出させる操舵ダクト20と、下方開口部20bに進行方向に複数並んで配置され、下方開口部20bから流出する水が進行方向の前方に向けて流れるように整流する平坦部41b、42b、43b、44bを有するルーバ翼41、42、43、44と、を備え、それぞれの平坦部41b、42b、43b、44bは、水平面との間で20°以上28°以下の角度をなすように進行方向の前方側が水平面に対して下方に傾いて配置されている。【選択図】図2
ADVANCE/BACKING STEERING DEVICE
前後進操舵装置
2017-08-10
Patent
Electronic Resource
Japanese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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