JPS5940997A - Water jet steering device - Google Patents

Abstract

PURPOSE:To make almost all of the momentum of water jet appliable to the generation of turning moment, by installing a duct pointing its rear end part to a ship breadth direction, in both sides behind a water jet nozzle tightly. CONSTITUTION:Each of ducts 7a and 7b for water jet deflection use is installed tight in the stern projecting part of a ship bottom 9 by means of a supporting device. At the tip of each duct, there is provided with a curved opening part set frontward on the slant so as to be oppoed to a jet nozzle 2 when this nozzle 2 points to left and right. Then, the rear end part is installed deflectively toward the broadside, and the outlet side end is disposed in the ship breadth direction and in a way of pointing outward so as to cause water jet flowing in from the opening part to be discharged out in the broadside direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water jet maneuvering system M for a ship equipped with a water jet propulsion device, which maneuvers the ship by changing the jetting direction of the water jet to the left and right.

FIG. 1 shows a side view of a ship 1 equipped with a conventional autage propulsion device.
The vessel is equipped with an autage jet nozzle 2 at the stern of the ship, and the autage nozzle 3 is ejected in the direction of the arrow 4 for navigation. When the ship 1 travels at a high speed, the wave surface 5 near the stern portion 1 is formed smoothly rearward from the stern bottom 6, as shown in the figure.

Figures 2 and 4 are views of the bottom side of the vessel.

In maneuvering a ship equipped with such a conventional water jet propulsion device, the water jet nozzle 2 is swung from side to side as shown in Fig. 3 to obtain the ability to turn the ship 1. However, the deflection angle θ of the autage nozzle 2 is normally limited to about 30° at most due to its structure. Therefore, part of the momentum of the autageut 3 emerging from the nozzle 2, that is, sin 50
There was a drawback that only a turning moment of about 1/2 degree was generated and the propulsion chip of the Tentage J) 5 could not be used effectively.

In such ships, the higher the speed, the better the motion characteristics, especially the steering performance, are usually required, and the above-mentioned drawbacks have diminished the characteristics of this type of ship.

In order to solve the above-mentioned drawbacks of the conventional vessels of this type, the watership maneuvering device of the present invention has a watership propulsion device that uses most of the momentum of the watership for turning [-- tact generation]. In a water jet maneuvering device that allows the direction of propulsion to be changed by swinging backward or to the right, the tip of the water jet nozzle has openings on the left and right behind the water jet nozzle, and when the water jet nozzle swings to the left or right, water is injected into the openings. The engine is characterized by a tact whose rear end is deflected toward the side of the ship.

The apparatus of the present invention will be explained with reference to the following two drawings. FIGS. 4 to 8 are diagrams showing an embodiment of the autage/ship navigation apparatus of the present invention.

FIG. 4 is a bottom view of the stern section 1 of an autage-seat propulsion vessel equipped with the device of the present invention, FIG. 5 is a view seen from the stern direction, and FIG. The side view at V4, and FIGS. 7 and 8 are bottom views with a partially broken surface shown, corresponding to FIG. 4, to show the state during maneuvering.

As shown in FIG. 4, the water jet 3 that is normally ejected from the jet nozzle 2 passes between the left and right water jet deflection tacts 7a and 7b and is ejected to the rear of the stern. Install.

When the ship 1 is sailing, as shown in Figure 1, the liquid level near the stern is formed to be smooth from the stern bottom to the rear, so the tact 7a
, 7b are installed at approximately the same height as the jet nozzle 2 as shown in Figs. do not have.

In addition, the autotager/sight deflection tactors 7a and 7b are fixedly attached to the stern projection bottom 9 by means of a support device i8, and an Icjev) nozzle 2 is installed at the tip thereof as shown in FIGS. 7 and 8. An opening curved diagonally forward is provided so as to face the jet nozzle 2 when pointing left or right, and the rear end is provided with a deflection toward the side of the ship, so that the autage jet that flows from the opening is provided. The outlet end is disposed in the transverse direction of the ship and is oriented outward so as to discharge the waste toward the side. Alternatively, as shown in FIG. 8, when the water jet nozzle 2 is slightly deflected to the starboard side, a part of the water jet 3 is guided into the deflection tact 7b to generate a small steering force. .

As described above, the auto-jet propulsion system 1 of the present invention is used in an auto-jet or seat-propelled boat in which the ejection direction of the water jet nozzle arranged at the stern can be changed diagonally from side to side. In order to guide the water jet right alongside the ship, by installing a fixed tact whose rear end points in the width direction of the ship, all or part of the water jet can be ejected in the lateral direction of the ship, which is different from conventional nozzles. It is possible to deflect much larger than the amount of deflection, and the maneuverability of the ship can be significantly improved, which has the advantage of being able to exhibit all the characteristics of this type of ship.

Note that the openings of the tacts 7a and 7b are widened into a bar shape.1. ;
It is also possible to efficiently receive water and water to make it more efficient.

Furthermore, in the above embodiment, the die/seat nozzle is single K.
However, when the nozzles are arranged on the port and starboard sides, the tacts 7a and 7b may be provided on each side.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing a ship equipped with a conventional water jet propulsion system, in which Figure 1 is a side view, Figure 2 is a bottom view when sailing, and Figure 3 is when turning. FIG. FIGS. 4 to 8 are views showing an embodiment of the Watersier-Site ship maneuvering device of the present invention; FIG. 4 is a bottom view during navigation;
Figure 5 is a rear view, Figure 6 is a side view taken in the direction of arrows ■-■ in Figure 5, Figure 7 is a bottom view when turning to the left, and Figure 8 shows some water mechanics and seat thrust. FIG. 1... two autojet propulsion vessels 2...
・Two auto-jet nozzles 3... Two auto-jet nozzles, 4... Two auto-jet directions 5.
...Liquid level 6 ... Stern bottom 7. '7a,
7b... Tact 8... Support device 9.
...Stern protrusion bottom agent Takashi Sakama

Claims (1)

[Claims] An autotager disposed at the stern of a ship: 1. In an autage ship maneuvering device M that allows the direction of propulsion to be changed by swinging the nozzle to the left or right. The tip of the water jet nozzle opens on the left and right behind the water jet nozzle, and when the water jet nozzle swings to the left or right, the water jet injected into the opening is guided to the side and discharged to obtain a reconcentration t-method (rear end). A water jet propulsion vessel characterized by being provided with a tact whose part is deflected in the side direction.