JPS63151396U

JPS63151396U -

Info

Publication number: JPS63151396U
Application number: JP4417687U
Authority: JP
Priority date: 1987-03-27
Filing date: 1987-03-27
Publication date: 1988-10-05

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の一実施例であるダク
トを船尾部に装着した状態を示すものであり、第
１図は斜視図、第２図は側面図、そして第３図は
第２図におけるＡ―Ａ部断面図である。第４図は
肥大船の模型船のＳＳ１／４における流速分布及
び流向をプロペラの作動していない場合と作動し
ている場合について示したものであり、第５図は
それらのＳＳ３／８における状態を示したもので
ある。第６図は模型船の船体表面圧力分布をプロ
ペラのある場合とない場合について示しており、
第７図はポテンシヤル流れのなかのプロペラのな
い模型船の船体表面圧力分布を示している。第８
図〜第１２図は従来の整流装置の例を示した図で
ある。１……ダクト、２……船尾部、３……プロペラ
、４……プロペラ円、５……プロペラ軸心位置。 Figures 1 to 3 show a state in which a duct according to an embodiment of the present invention is attached to the stern of the ship. Figure 1 is a perspective view, Figure 2 is a side view, and Figure 3 is a side view. FIG. 2 is a sectional view taken along line AA in FIG. 2; Figure 4 shows the flow velocity distribution and flow direction at SS1/4 of a model ship of an enlarged ship when the propeller is not operating and when the propeller is operating, and Figure 5 shows the situation at SS3/8. This is what is shown. Figure 6 shows the hull surface pressure distribution of a model ship with and without a propeller.
Figure 7 shows the pressure distribution on the hull surface of a model ship without a propeller in a potential flow. 8th
Figures 1 to 12 are diagrams showing examples of conventional rectifiers. 1... Duct, 2... Stern part, 3... Propeller, 4... Propeller circle, 5... Propeller axis center position.

Claims

[Scope of utility model registration request]

To improve the propulsion performance of a ship having a marina-type stern, which is comprised of a symmetrical duct having a substantially cylindrical or elliptical cylindrical shape and having a wing cross-sectional shape, which is provided in front of a propeller at the stern and below the axis of the propeller. Device.