To reduce friction resistance on a submerged surface in contact with water in a water surface navigating body such as a vessel navigating on a water surface or an underwater navigating body navigating underwater such as a submarine.SOLUTION: In a navigating body 1 including a hull submerged unit 2 under a water surface while navigating, water Wa is discharged to go along a submerged water surface 2f downstream of a water discharge opening 12 at a flow velocity Vw slower than one of mainstream flow velocity Vm in periphery of the water discharge opening 12 or navigating velocity Vs from the water discharge opening 12 provided integrally at a submerged surface 2f of the hull submerged unit 2 or from the water discharge opening 12 arranged separately abutted to or separated from the submerged surface 2f of the hull submerged unit 2 at least while navigating. Thus, friction resistance in the navigation body 1 is reduced.SELECTED DRAWING: Figure 2
【課題】水上を航行する船舶等の水上航走体や潜水艦等の水中を航行する水中航走体等の航走体において、水に接する没水表面の摩擦抵抗を低減する。【解決手段】航走時に水面下の船体没水部2を有する航走体1において、少なくとも航走時に、船体没水部2の没水表面2fに一体で設けられている水放出口12から、又は、船体没水部2の没水表面2fに当接または離間して別体で配置されている水放出口12から、水放出口12の周囲の主流の流速Vmと航走速度Vsのいずれか一方よりも遅い流速Vwで、水放出口12の下流の没水表面2fに沿うように水Waを放出する。これにより、航走体1の摩擦抵抗を低減する。【選択図】図2
FRICTION RESISTANCE REDUCTION SYSTEM, NAVIGATING BODY, AND FRICTION RESISTANCE REDUCTION METHOD FOR NAVIGATING BODY
摩擦抵抗低減システム、航走体及び航走体の摩擦抵抗低減方法
2023-09-22
Patent
Electronic Resource
Japanese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
UNDERWATER NAVIGATING BODY DETECTION DEVICE AND UNDERWATER NAVIGATING BODY DISABLING DEVICE
European Patent Office | 2018
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