PROBLEM TO BE SOLVED: To provide a stern shape having a stern duct and a fin and capable of exhibiting an excellent energy saving effect by suppressing negative interference between the fin and the stern duct, and a vessel.SOLUTION: This stern duct is provided with: a propeller 20 that is provided to the stern of a vessel 10; a fin 30 that guides a flow to the propeller 20 provided to the stern of the vessel 10; and a stern duct 40 that is provided between the propeller 20 and the fin 30. The virtual radius Rd of the rear end of the duct body 41 of the stern duct 40 is 30-80% of the radius Rp of the propeller 20, the virtual center Xd of the virtual radius Rd is deviated by 30-80% of the radius Rp of the propeller 20 above the center axis Xp of the propeller 20, and a horizontal gap L3 between the rear end 30b of the fin 30 and the front end of the duct body 41 is -20 to +10% of the diameter Dp of the propeller 20.SELECTED DRAWING: Figure 1
【課題】フィンと船尾ダクト間の負の干渉を抑え、優れた省エネ効果を発揮する、船尾ダクトとフィンを有した船尾形状及び船舶を提供すること。【解決手段】船体10の船尾に設けられたプロペラ20と、船体10の船尾部に設けられたプロペラ20に流れを導くフィン30と、プロペラ20とフィン30の間に設けられた船尾ダクト40とを備え、船尾ダクト40のダクト本体41の後端の仮想半径Rdがプロペラ20の半径Rpの30%以上80%以下であって、仮想半径Rdの仮想中心Xdがプロペラ20の中心軸Xpよりも上方にプロペラ20の半径Rpの30%以上80%以下ずれており、フィン30の後端30bとダクト本体41の前端との水平方向の間隙L3がプロペラ20の直径Dpの−20%以上+10%以下であること。【選択図】図1
STERN SHAPE HAVING STERN DUCT AND FIN, AND VESSEL
船尾ダクトとフィンを有した船尾形状及び船舶
2018-06-14
Patent
Electronic Resource
Japanese
STERN ADDITION, STERN SHAPE HAVING STERN ADDITION, AND VESSEL
European Patent Office | 2021
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