JPS60236865A - Hovercraft - Google Patents

Abstract

PURPOSE:To secure stable navigation in a ship, by jetting seawater out of a slender nozzle hole and thereby producing a platelike flowing wall, while setting up this wall in both in front and rear of a sidewall type Hovercraft. CONSTITUTION:A water pipe 2 installed in position between high-pressure airtight side walls 1 and 1 for hull floating use comes to flatness in type in proportion as it goes to its tip end, therefore its terminal end forms a slender nozzle hole 17 downward, making it open in every nook and corner. Doing like this, if a lower part of the side wall 1 is submerged in water and high-pressure water is fed to the water pipe 2 with a pump, the high-pressure water is jetted out of the slender nozzle hole 17 whereby a platelike flowing wall 3 is formed up. Thus, the formed flowing wall 3 makes a high pressure chamber 4 ventilated with high-pressure air maintainable in more high pressure than an ambience.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in hovercraft, and in particular provides new technology regarding high-pressure air sealing technology for flotation.

Conventionally, hovercraft used something called a cloth-like skirt to seal in high-pressure air to keep the hull afloat and run on water. Currently, it is only applied to small ships in calm inland seas because it cannot deform to follow the flow and high-pressure air leaks, causing problems.

However, with current technology, it is possible to seal high-pressure air in the bottom of the hull and make the hull float in the air, which eliminates water resistance, making it possible for ships to travel at high speeds, and is hoped for. To achieve this, a radically new type of air sealing technology is needed to replace the cloth-like skirt, which seals high-pressure air for floating the hull in the bottom of the ship and can follow high waves. The present invention relates to a new air sealing technology that meets this need.

The basic idea is to inject seawater from a long and narrow injection port to create a plate-shaped running water wall and install it at the front and rear of the sidewall type hovercraft to seal the high-pressure air used to float the ship. It is the principle.

Next, embodiments will be explained in detail with reference to drawings showing examples. First, in FIG. 1, which is a partially cut-away sketch showing an embodiment of manufacturing a plate-shaped flowing water wall that forms the gist of the present invention, and FIG. 2, which is a side view cut from the center, 1 is a high-pressure air seal for floating the hull. In the side wall 2, a water pipe 2 becomes flat as it goes to the tip, and the end is formed with a downwardly elongated injection port 17'fr, which is opened all over between the both side walls 1. In this way, when the entire lower part of the side wall 1 is flooded with water and all the high-pressure water is sent to the water pipe 2 by a pump, high aqua regia is ejected from the elongated injection port 17 to form a plate-shaped flowing water wall 3. The flowing water wall 3 thus formed can maintain the high pressure chamber 4'tl to which the high pressure air is blown at a higher pressure than the outside world.

Next, three embodiments in which the main water wall is applied sequentially from small ships to large ships will be described in detail. In Figures 3, 4, and 5 showing the first embodiment applied to a small ship in '171, 1.
2 is a side wall for sealing high-pressure air for floating the hull, and 2 is a high aqua regia water pipe whose tip forms an elongated injection port 17. Reference numeral 3 denotes a water wall for sealing high-pressure air for surfacing the hull, which is the essence of the present invention and is injected through the injection port 17.High-pressure air chambers 4 are installed on both side walls 1 at two locations at the front and rear of the hull. form. 5 is the main body of the ship, 6 is a high-pressure water pump, and 7 is a seawater inlet for creating the water wall 3.

15 is a seawater suction pump, and 16 is a water tank.

8 is a propulsion propeller, and 9 is a fan for blowing air into the high-pressure air chamber 4 for floating the hull. 10 indicates the position of seawater. In such a hovercraft, the water walls 3 at the front and rear can follow the complex changes of waves and keep the high pressure air chamber for floating the hull at high pressure, so it can be used in open seas with high waves and can operate at high speed. Ruru. Note that when the hovercraft of this embodiment travels at extremely high speeds, the front water wall may not be necessary.

Next, an example applied to a medium-sized ship will be shown. In Figures O6, O8, and O9, 111 is a side wall lfi for sealing high-pressure air for floating the hull, and 13 is a high-pressure air dividing wall installed parallel to the side wall in the center of the bottom of the ship. 3 is a high-pressure air-sealed flowing water wall for hull levitation provided at the front and rear of the ship, and 11 is a high-pressure air dividing water wall, which is combined with the dividing wall 13 to form 4 high-pressure air chambers for hull levitation as shown in the divided diagram. to be divided into

5 is the ship body, 6 is a high-pressure water pump, 7 is a seawater inlet, and 9 is a fan for the high-pressure air chamber 4 for surfacing the ship, one each for each high-pressure chamber, total of 4. Each one is installed individually and controlled by a computer that takes into consideration wave conditions and cargo conditions. 12 is a propulsion screw; 1
4 is a rudder. In this way, by dividing all the high-pressure air chambers for floating the hull at the bottom of the hull, even if the air in one high-pressure air chamber suddenly leaks due to high waves, etc., the other three will support the hull, so there is only one high-pressure chamber. Compared to the case of , there is less wave shaking and it is more stable.

The main effect of the main water wall is that the air chamber for floating the hull at the bottom of the hull can be divided in this way.

Next, Figures 1 and 1 show examples of application to the Daisei Ship.
In FIGS. 1, 12, and 13, 1 is a side wall for sealing high-pressure air for flotation of the ship, and 13 is two high-pressure air dividing walls. Reference numeral 3 designates water walls for sealing high-pressure air for floating the hull at the front and rear parts of the present invention, and reference numeral 11 designates high-pressure air dividing water walls provided at four locations. In addition, the front and rear divided running water walls 1
1 double-seals the high pressure chamber together with the flowing water walls 3 immediately before and after. 5 is a ship body, 1- is a propulsion screw, and 14 is a rudder. By doing this, the bottom of the hull is divided into 99 independent high-pressure air chambers for floating the hull as shown in FIG. In addition, by adjusting the air pressure in each chamber using a computer, it is possible to levitate a large ship and run extremely stable and at high speed.

In this way, by using the flowing water wall of the present invention in place of the cloth-like skirt as a high-pressure air sealing method for floating the hull of a sidewall type hovercraft, the flowing water wall has a height between the bottom of the ship and the sea surface due to waves. The high-pressure air tube for flotation at the bottom of the ship can be sealed and maintained at high pressure by extremely effectively following sudden changes in water pressure. In the high seas,
In addition, it can be applied to large ships, and the high-pressure air chamber for floating the ship at the bottom of the ship can be divided, which has the effect of further ensuring stable running of the ship.

[Brief explanation of the drawing]

FIG. 1 is a sketch showing an example of manufacturing a running water wall, which is the gist of the present invention, and FIG. 2 is a sectional view of the same side. 3, 4 and 5 show the first embodiment, FIG. 23 is a sectional view of the same side, FIG. 24 is a front view of only the hull, and FIG. 5 is a sketch of only the hull. 26 showing the second embodiment is a side sectional view, and 27
The figure is a front view of only the ship body, and Figure 8 is a sketch of the same. FIG. 9 is a plan view showing the division of the high-pressure air chamber for flotation of the hull. FIG. 710 shows the third embodiment, FIG. 11 is a front view, and FIG. 12 is a side sectional view. FIG. 13 is a plan view showing the division of the high-pressure air chamber for flotation of the hull. 1 is a side wall, 2 is a water pipe, 3 is a flowing water wall, 4ti is a high-pressure air chamber for floating the hull, 5 is a hull body, 6 is a high-pressure water pump, 7 is a seawater inlet, and 8 is a propulsion propeller. 9 is a blower fan, 17 is an injection port, 11 is a high-pressure air chamber divided water wall, 12 is a propulsion screw, 13 is a high-pressure air dividing wall, 14 is a rudder, 15L seawater suction pump, and 16 is a water tank. Patent applicant Tamio Egashira

Claims (1)

[Scope of Claims] 1. Side walls for sealing high-pressure air for flotation of the ship are provided on both sides of the bottom of the ship in a downwardly projecting manner, and a flowing water wall for sealing high-pressure air for flotation of the ship is provided at the rear part between the two side walls.1jt Hovercraft with percentage characteristics. 2. The hovercraft according to claim 1, wherein flowing water walls for sealing high-pressure air for levitation of a λ hull are installed at the front and rear portions between both side walls for sealing high-pressure air for levitation of a hull. 3. Claim No. 3, in which a water wall for sealing high-pressure air for surfacing the ship's hull is further constructed or several water walls for dividing high-pressure air are provided between the front and rear drift ice walls between both side walls for sealing high-pressure air for surfacing the ship. The hovercraft described in item 2. 4. The hovercraft according to claim 2 or 3, further comprising one or more high-pressure air dividing walls provided at the bottom of the hull in parallel with the side wall for sealing high-pressure air for flotation of the hull. 5. The air pressure of each chamber of a high-pressure air chamber divided by a side wall or dividing wall for sealing high-pressure air for hull levitation at the bottom of the hull, a flowing water wall, etc. is adjusted respectively. hovercraft.