KR19980081578A - Ship with hull supported by fully submerged oval float - Google Patents

Abstract

The present invention relates to a ship in which the usable volume of the hull or ship is on the water surface, the submerged or half submerged part of the ship is a rectangular antirolling propulsion float, and the axis of the float relates to the ship parallel to the ship's longitudinal axis, and Has at least two floats with minimal drive resistance, increased restoring force and more stable and easier maneuverability.

Description

Ship with hull supported by fully submerged oval float

In the present invention, the hull is floating on the surface of the water, the submerged portion of which has a rectangular anti-roll rolling prot parallel to the longitudinal axis of the ship, and to minimize the driving resistance and increase the restoring force, and to facilitate the maneuverability and stability It is aimed at achieving minimum driving resistance, maximum stability and maneuverability by having at least two prots.

SUMMARY OF THE INVENTION The present invention aims to reduce the water resistance in sailing and at the same time solve the conventional problem of being able to sail safely at high speed in calm or rough waves.

Prayers were made to address these issues, but none of them could be a practical solution because they only described structures that would have a safety implication for each cause or greatly reduced efforts to achieve.

Argentine patent 213,661 describes a rotating oval submersible float, but references to the stabilization means mentioned in the present invention have been missed.

In addition, Japanese Patent Laid-Open No. 52-31486 refers to a diving float.

However, there is no description of its shape, but a description has been made of a vertical equalization means between two floats (at the rear of the float) and horizontal and vertical keying devices (at the front end of the float) located between both floats.

However, these equalizers and keying devices increase the navigation surface due to their characteristics, and their shape is not compatible with the constituent characteristics necessary to reduce the mold clamping resistance, resulting in significant resistance to drive resistance.

EP 0080308 describes a movable semi-submersible float secured to the water surface at the front and rear ends of the float, and partially to a submersible column perpendicular to it.

The submersible end of the column is provided with a pair of rear decks acting as safety means, and as indicated in the previous specification, the ship is stable for low speed.

It is evident that the pillars located near the ends of the floats dramatically reduce the morphological effects made on the floats, while at the same time these pillars are rigid structures for generating wave resistance, increasing drive resistance and driving the float moving means. need.

It should be noted that even if the background was observed, no suitable stabilization means associated with the float supporting the ship was found, so that the ship could not sail steadily in calm or rough seas.

The main purpose of the present invention is that the ship or boat hull or usable volume 1 is above the water surface, and the submersible portion 2 and half submerged portion 3 of the ship are basically rectangular anti-rolling floats 2. (3) and a float axis parallel to the longitudinal axis of the ship and a series of elliptical support columns, and at least two floats are configured to minimize drive resistance, increase resilience, and facilitate maneuverability and stability. It is.

This ship according to the invention has several advantages compared to the previous ship.

That is, it reduces the wave forming resistance, reduces the driving resistance, uses the propulsion force more completely, saves fuel, enables the transportation at higher speed, has a limited draft and wider width, and the minimum driving resistance In order to achieve maximum stability and maneuverability, the optimum balance between surface resistance and shape resistance is maintained, and stability problems are achieved by generating restoring force (in response to double rolling) with minimal wave force.

The buoyancy of the ship is fundamentally not dynamic, but static, consuming no energy to form a gliding effect.

Now, let's analyze the performance of the ship using the present invention under variable speed conditions and in calm or rough seas.

There are basically three types of resistance that use propulsion.

That is, there are surface resistance, shape resistance, and wave formation resistance.

At relatively low speeds (without scope related to flood numbers) (between 0 and 1.5), friction forces constructed between 80% and 85% of the total resistance are more commonly observed and free (1.5-3). At relatively high speeds, the frictional force holds 50% of the total resistance, and increases more quickly at low speeds, especially because of the wave formation.

As a reference to relative speed, the cargo ship sails at 0.8, the battleship is at 2.0, and the offshore ship is sailing at 7.0 or above, respectively.

Especially when the anti-anti-rolling float (2.3) is submerged (80% to 100% of the volume), the only patent that uses the shape of the float as a whole, the arrangement of the float as described in Argentina Patent 213,661, the flow is The huge, contact surface, air-water was much smaller than in ships or boats because of floats, and the response resistance was much lower, making the propulsion more satisfactory, especially at high speeds.

In order to achieve the required level of stability in calm waters, the float was equipped with safety devices at the beginning and stern, which were controlled by known means.

In other words, the manual hydraulic pressure drive or the microprocessor control canceled the boat's pitch and roll.

When the sea is violent at high speeds, the safety devices are not sufficient to achieve a certain level of stability of the ship.

The present invention does its best to the shape of the float in order to minimize the shape resistance and plate forming resistance, the stability is gradually increased as the doubled so required.

The larger the ratio between the large and smaller axes, i.e., the larger the float, the faster the ship's speed, so that the structure of each anti-rolling float (2, 3) by spheroids achieves the most satisfactory propulsion. To excellent condition.

It is known that the hull with the smallest surface for a given volume is a sphere.

In the case of gum, we compare it with the electron cloud of hydrogen atoms to see what shape of roughness is formed when it is affected by an external uniform field of force.

When this electron cloud is under the influence of a force field that can deform it in a predetermined direction, for example, a uniform external electric field, the electron cloud is deformed, resulting in an induced electric dipole, The shape to form is a spheroid.

Apart from the above problem, it causes wave disturbance when the hull moves in liquid.

If a particle is placed under the influence of the first vortex of the disturbance, its path equation becomes sine or cosine.

If the particles constitute a half-wave, for example, the points reached during the corresponding path corresponding to the sine correspond to one of the points given by the semi-elliptic equation, and if the particle group is chosen instead of taking the particle, the plane in which they are accommodated is inverse rectangular In order to be normal to, and to coincide with the intersection of the plane with the center of symmetry, the equation corresponding to the spheroid in space can be obtained.

According to the above, in particular in the case of the present invention, it can be concluded that the most satisfactory shape of the hull having a predetermined volume, moving at normal speed in water and generating minimal disturbance is a spheroid.

In addition, if the spheroid cuts the spheroid having the main axis of the ellipsoid in a horizontal plane, it can be seen that the fluid not only flows out from the bottom but also flows out from all over the top.

This means that the fluid flows around the hull.

To provide adequate resilience to the boat, anti-rolling floats are not entirely spheroids, as anti-rolling floats (2,3) are in boats described in Argentine Patent 213,661.

When cutting the anti-float (2, 3) along the plane perpendicular to the longitudinal axis, the float will be shaped as shown in Figure 3, and cutting the float in any horizontal plane will have an oval shape, which is similar to an ellipse, It is not a geometric ellipse that will have a radius ratio in its propelling and antirolling sections.

When the ship is pulled (FIGS. 5 and 6), the float surface changes and becomes large, resulting in an increase in the moment of inertia opposite to rolling.

Likewise, the submerged volume is increased by V 'so that this extra volume creates a push at L distance from the center of the ship, producing a moment opposite to the motion.

The exact shape and dimensions of the portion of the anti-rolling float (2, 3) that is not submerged depends on the anti-rolling properties the ship requires, and its response is slow or abrupt, and the portion horizontal to the longitudinal axis of the non-submerged volume is It is empirical or elliptical.

By constructing the float in this way, selecting the scale of the axis of the ellipsoid forming the float, the driving resistance and the wave force can be reduced.

In fact, if the large semi-axis of the formed ellipse is R and the semi-axis of the same ellipse is r, the value of the corresponding speed of the drive resistance and the wave force of which the driving force and the wave force are small can be determined in all cases.

Given the support volume T, there are a number of ratios between R and r, and the optimum speed V corresponds to each of them.

As phase R / r increases, V also increases.

Thus, if T remains constant, V becomes large since only R becomes large with respect to r for the same number of floats.

Alternatively, given R, determined by the length of the ship, the optimum speed is successfully increased if the number of floats increases for the same volume.

Longer floats, or an increase in the number of floats, also increases the outer surface, which allows for greater compression with water.

Thus, the speed is reduced.

If the motive force is always constant, the speed reaches a maximum for each volume T.

And as the surface gets larger, the speed decreases.

The maximum speed is useful for determining the number and size of the floats with respect to the volume r supporting the given weight at which the required driving force is minimized.

Therefore, once the cargo and speed are fixed, the ship according to the invention can use a small motive force for the cargo at that given speed.

The anti-rolling floats 2 and 3 of the present invention can be configured without considering the limitations of the shape of the conventional hull or the previous model, and in this way, the wave generated by the float portion in contact with the air-water surface The power can be minimized, providing the resilience required for the ship's more satisfactory maneuverability and achieving lateral resistance.

The float can be hollowed out in its entirety and divided into waterproof compartments that are beneficial in the event of an accident or breakage.

The compartment can be made with the support of a cross section and can also be divided into planning rooms in which loads or fuel are stored, or can be used to install a propulsion engine.

In the planning room, propellers, direction keys, rolling stabilizers, etc. can be provided.

In another embodiment, the anti-rolling floats 2 and 3 are provided with a support to minimize resistance, so that the support of the float, which is not the outer surface, is rectangular or elliptical in a continuous curve.

However, the side walls are separated by forming an angle or a smaller angle than the angle of the outer float.

As such, the new embodiment of the anti-rolling float is divided into two parts.

That is, the inner anti-rolling portion and the terminal anti-rolling portion.

It is also convenient to add an end to these parts that do not exactly match the ellipse, which points are useful for reducing drive resistance, such as points, bows, or other hydrodynamic or aerodynamic components. This can be

Another important invention is that the float is semi-submersible and its diving volume is about 80-100% of the float.

In this way, the level of stability is more satisfactory, and the increase in drive storage is small.

Preferably, this allows the propulsion of the float to be aligned in a straight line so that the entire diving volume is in the same range as each unit of the propulsion.

Recalling that there must be at least two floats, it is wise to implement an invention with two or more floats, the float being symmetrical about the same horizontal plane with respect to the vertical plane passing sideways of the ship's longitudinal axis, in order to balance the propulsion. It is arranged.

The surface in contact with water always consists of the outer and outer regions of the submerged area of all floats 3.

Directional keys, which are generally keys, are preferably located at the rear of the float, and if there are two or more floats, the keys are placed behind the outer float.

In a storm, if there are not enough rolling means, the hull of the ship is conventionally formed, and means are provided for securing the water-line to the hull.

Among them, the means is a means for filling the float with water, increasing the cargo of the ship, and increasing the float lift device and the like.

1 shows a front view of a ship.

2 is a side schematic view of the elevation of the vessel of FIG.

3 and 4 show a cross-sectional view and a cross-sectional view of a comprehensive anti-knock float according to an embodiment of the present invention.

5 and 6 show the effectiveness of the float when the ship is pulled, and the submerged float and the volume vary.

As shown in FIG. 1, the ship shown is at least two floats 2 associated with the hull by means of anti-rolling means 3 having a superset set corresponding to the hull 1 and an inverted rectangular truncated barrel. ), The base of the anti-rolling means is fixed to the lower part of the hull 1, and the lower base is fixed to the upper part of the float 2, preferably forming only one body.

The front end 7 and the rear end 6 of the anti-rolling means 3 consist of inclined ends consisting of sharp edges 8 and 9 of the hydraulic profile for good drainage, the entire float volume being water It is configured to support the hull 1 and the cargo on the surface.

3 and 4 show the longitudinal section and the cross section of the anti-rolling floats 2, 3 formed by the lower rotating body 2 with the upper longitudinal openings aa, two from the opposite ends of the longitudinal openings aa. The routed walls 12, 13 protrude, and at the end of the wall there are horizontal sections 10, 11 which are useful for joining the fuselage to the hull 1, in addition to the structure of the truncated conical section consisting of them. Is the anti-rolling means 3.

By installing at least two rectangular anti-rolling floats on the ship or boat, it is possible to reduce the driving resistance of the ship, increase its resilience, and easily achieve maneuverability and stability when sailing.

In particular, it can sail stably at high speed even in calm or rough seas.

Claims (13)

In a ship having a floating means coupled to the ship, wherein the floating means is at least two rectangular floating bodies arranged parallel to the longitudinal axis of the ship, the floating means being on a water surface of a useful volume of the hull or ship. A ship comprising an antirolling float at the top of the vessel. The method of claim 1, The anti-rolling means forms a rectangular fuselage whose large base is coupled to the hull and the small base is coupled to the floating means. The method of claim 1, The anti-rolling means constitutes an inverted truncated conical fuselage, the large base of which is coupled to the hull and the small base of the ship. The method of claim 1, Anti-rolling means characterized in that the coupling means between the float and the hull. The method of claim 1, An end portion of the anti-rolling means constitutes an aerodynamic edge for drainage. The method of claim 1, An end portion of the anti-rolling means is characterized in that a ship constructed aerodynamic edge for drainage. The method of claim 1, A ship characterized in that the volume of the submerged float is in the range of approximately 80-100% of the total volume of the float. The method of claim 1, A ship characterized in that the radial ratio between the ellipsoid and the anti-rolling part of the float propulsion unit is the same. The method of claim 1, Propulsion end of the anti-rolling float is characterized in that for forming a hydrodynamic edge for drainage. The method of claim 1, A float is provided with a watertight compartment. The method of claim 1, The float is provided with means for changing the odd line and securing it to the hull of the ship. The method of claim 1, An anti-rolling float is provided with a stabilizer. The method of claim 1, An anti-rolling float having a means for filling and emptying the float.