Multihull vessel

 

(57) Abstract:

Usage: the invention relates to shipbuilding and the specific implementation of the underwater part of the Multihull vessel, intended for swimming with great speed, which can be used for different purposes, namely to implement vessels for commercial purposes, warships or sports vessels, the essence of the invention lies in the fact that the Multihull vessel has a Central float and its associated at least 2 lateral float, square, water-lines of the side floats and the distance between their diametral planes and diametral plane only ship in the area extending in height by an amount equal to at least 6% the distance between the diametral plane of each of the side floats and diametral plane of the entire vessel, selected from the following equation: where n is the number of lateral floats, Si- the area of the waterline sidebar float in square metres, di- the distance between the diametral plane of the i - side float and diametral plane all over the ship, in metres, is the ship's displacement, in metric tons, SU - distance between center of gravity and center his way to the waterline at least equal to 1.0, and the ratio of its length to width is at least an 8.0. 14 C.p. f-crystals, 12 ill.

The invention relates to shipbuilding and the specific implementation of the underwater part of the Multihull vessel, intended for swimming with great speed, which can be used for different purposes, namely to implement vessels for commercial purposes, warships or sports courts.

Known Multihull vessel containing the Central float associated with at least two side floats (see SV, and.with. USSR N 268198, CL. 63 IN 1/10, 1973).

However, the known vessel has insufficient lateral stability.

The technical result from implementation of this invention is to increase the transverse stability of the Multihull vessel.

This technical result is achieved by the fact that the Multihull vessel has a Central float associated with at least two side floats, square, water-lines of the side floats and the distance between their diametral planes and diametral plane only ship in the area extending in height by an amount equal to at least 6% of restorany from the following equation:

< / BR>
where: n the number of lateral floats;

Sithe area of the waterline sidebar float in square metres;

dithe distance between diametrically plane i in the side of the float and diametral plane all over the ship, in metres;

the ship's displacement, in metric tons;

SU of the distance between the centre of gravity and centre of buoyancy, in metres;

with this Central float is the ratio of its width to the sediment, as measured by its current waterline, at least, equal to 1.0, and the ratio of its length to width is at least an 8.0.

In addition, the maximum displacement of the at least two side floats equal to 20% of the full displacement of the ship.

In addition, the maximum length of one side of the float is equal to 40% of the length of the Central float, measured in the plane of its waterline.

In addition, the side floats are made with constant cross-sections of their water-lines at its height.

In addition, the waterline on each side of the float is made ovoid or pterygoid forms in the plan.

In addition, each side of the float in the vertical lateral projection is made rectangular in shape.

In addition, each of olhausen this site and having an inclined section, oriented toward the forward end of the ship.

In addition, each float with its sloping section of the stem profiled in the shape of a trapezoid in a vertical lateral projection.

In addition, each float is made with a cylindrical or ellipsoidal body is placed in its lower part.

In addition, the case stands for the stem of the corresponding side of the float, forming a capsule.

In addition, the side floats are connected to the Central hinge and performed with the power cylinders to rotate around the axes of the hinges.

In addition, each float is made with telescopically extendable section and a power cylinder for his nomination.

In addition, the floats are made with a stabilizing bearing surfaces.

In addition, the side floats are made with ballast.

In addition, the device is made with ailerons, stabilizers pitching side, located on the inner sides of the side floats.

In Fig. 1 shows a side view of a Multihull vessel according to the invention; Fig. 2 shows a view of the vessel from the side of the nasal tip; Fig. 3 shows a side view of a rectangular prescription ship; in Fig. 5 section a-a of Fig. 3; Fig. 6 shows a top view of Multihull vessel with an increased number of lateral floats; Fig. 7 depicts a side view of the side of the float vessel with two adjacent volumes without a smooth transition, and Fig. 8 shows a side view of the lateral float of two non-contiguous volumes; Fig. 9 depicts a side view similar to Fig. 1, but with a cylindrical casing, is placed at the bottom of each side of the float of Fig. 10 is a view along arrow B of Fig. 9; Fig. 11 shows a diagram of the Multihull vessel with a hinged connection of the lateral floats with Central float; Fig. 12 shows a diagram of the Multihull vessel having a telescopically extendable sections of the side floats.

Multihull vessel has a platform 1 supported by the Central float 2, associated with lateral floats 3, 4. The Central float 2 supports the platform 1, which is designed for communication with side floats 3, 4.

According Fig. 2 platform 1 supports robust design 1A forming the brackets or overhangs 1b communication stern with side floats.

The Central float 2 or case, at least at the level of its waterline and in all conditions, the melt is and with length in excess of 100 meters, the width at the waterline at the level of the main beam of the Central float is about 8 meters.

In the framework of the invention, and considering the fact that the ship was not on the limiter, it is necessary that each side of the Central float, at least one side of the float would be partially submerged in static position of the vessel afloat.

The side floats form stabilizers and are made so as to have a complex of small displacement, which should be at least equal to 20% of the total displacement of the ship. In addition, the surface of the immersion of the side floats should be small and fit a maximum of 15% of the surface of the full immersion of the vessel. Additionally, in a static position useful initial length of the side floats 3, 4, mostly at least equal to 40% of the length of immersion of the Central float 2 in the plane of its waterline. For the Central float 1 ratio between its width and draught must be greater than 1 at any level of the waterline and any conditions of navigation, i.e., when any navigation waterline.

According to the invention, it is essential that any horizontal cross-section in the zone, which is located on isopod any navigation waterline of the vessel, the shape of the horizontal cross sections of the water-lines of the side floats would be such that the sum of these floats, works for each float a surface, expressed in square metres horizontal section on the square of the distance, expressed in metres, from its X-axis to the axis of the vessel X works does not exceed 80% of the weight, expressed in metric tons of this vessel, in the amount of figures 4 and distance, expressed in metres between the centre of buoyancy and centre of gravity G of this vessel.

On the other hand, the parameters of the vessel must satisfy the inequality:

,

where

n number of lateral floats,

Sithe area of the waterline sidebar float in square metres;

dithe distance between diametrically plane i in the side of the float and diametral plane all over the ship, in metres,

the ship's displacement, in metric tons;

4 module resistance;

G the distance between the centre of buoyancy and centre of gravity G of the ship;

Given the preceding, it appears that the form of horizontal lines of the cross sections of the side floats can be changed to harmonize with the navigation conditions or design features.

In Fig. 3 shows that Bo horizontal section, i.e., the cross-section along the line a-a, has the form of a rectangle P with rounded or adjusted in small parties in order to provide a consistent glide.

In Fig. 1 shows that on the main side floats may have a complex shape, for example, a rectangular area R1extends on both sides of the waterline F, then, in front of the stem 20 continues inclined section 21.

In Fig. 4 shows that the side floats can be shipped by parcel T keystone shape in vertical lateral projection, continued sloped nose section 22.

In Fig. 7 shows that the side floats can limit two adjacent volume without a smooth transition.

In Fig. 6 and 8 shows that the side floats can be formed by two non-contiguous volumes.

Can be considered and other forms main form, if only they didn't change the terms and conditions set forth in the preceding text, i.e., so that these forms were not created overtorque alignment at small angles of roll, but to this point has been increasing with the growth of the roll angle, i.e., in other words, each side of the float or group of lateral floats were equal on each side of the float 3 or 4;

2nd level: at a high angle roll one of the floats 3 or 4 may be immersed, and the other float for compensation achieves enhanced zone buoyancy.

In Fig. 1 and Fig. 2 the vessel is shown as having only two sides of the float 3, 4. This condition is not required.

In Fig. 6 shows as an example the Central float 2, connected at the rear with two side floats 3, 4, and in front of the two side floats 3A, 4A, the distance between which, although not necessarily, different from the distance between the side floats 3, 4.

As an example, the vessel shown in Fig. 1 and Fig. 2, has a Central body 2, whose length exceeds 100 m in length on a waterline at 95 m (approximately).

As mentioned earlier, in this case, the width at the waterline at the level of the main beam of the Central building will be about 8 meters and the X-axis of the side housings 3 or 4 is at a distance of 15 m from the X-axis of the Central body, and a straight section of a rectangular part of R1will be rectangular, with a width of one meter and a length of about 10 to 30 meters.

The height of the side floats 3, 4 is in this case about 5 meters on a plot having a homogeneous direct postearly side rolling with ailerons 24, 25, located, preferably, on the inner side floats.

In particular, since the implementation of the invention according to the ship returns moments depending on the roll angle substantially greater than for other Multihull, this allows you to provide a small surface of the ailerons 24, 25, and hence low resistance to the forward movement. Since the ailerons 24, 25 can be located on the inner surface of the side floats 3, 4 there is no need to make them retractable, when the ship approaches the dock, or in other circumstances that reduces their value.

In addition, in Fig. 1 and 2 shows that under the Central part is preferably the nasal tip may be provided at least one stabilizer pitch 27. The stabilizer pitch 27 may be of the active type, i.e. with a movable controlled Aileron feedback on the movement of the pitch, or passive type, i.e. with a fixed Aileron. As mentioned above, the stabilizer may be combined with carrier planes as it will be explained next.

Another implementation of the invention shown in Fig. 9 and 10, in which the Central float 2 made in the form of a slim design with a large ratio of the on the other hand, with side floats 3, 4.

The connection between the Central float 2 and the side floats is performed, preferably, by limiting the arches 6, 7, and each float is, moreover, connected with the platform arched element 8 or 9.

From the preceding it follows that the side floats are continuously increasing buoyancy up to the platform 1.

Each side of the float is formed with a thin wall 10, the lower end of which includes a body 11 has a cylindrical shape, a circular or elliptical cross-section, as shown in Fig. 10.

If the side floats are provided in the lower part of the housing 11, it is desirable that the axis 11a (see Fig. 9) was located in line with the keel 12 of the Central float.

The tools presented above, and the deviation of the lateral floats chosen to give the vessel's transverse stability required, but optimal in conditions of normal navigation, i.e. so that the tops of the waves did not reach the top of the arches 6, 7, and elements of the arch 8, when they are provided.

The above conditions are provided so that the Central float 2 can have a very thin lines, providing high speed peremeshany is also to make the vessel is weakly sensitive to the effects of pitching. In addition, the small width of the side floats, which is, mainly, about 1 meter of length of the vessel is approximately 100 m, ensures that the lateral floats only create small waves that facilitates the promotion of the vessel forward.

In Fig. 10 shows that the side floats 3, 4 have a small, almost constant width in the greater part of its height. Therefore, hydrostatic refund, which they create in the moment of the cross-Nekretnine vessel, not too large, and therefore the vessel behaves comfortable against lateral motion.

Preferably, as shown in Fig.9, so that the stem 13 of the wall 10 would be located with a space from the front of the housing 11 for the formation of the capsule 14.

If the width of the side floats is about 1 meter, the housings 11 are of the order of 2 to 3 meters, so that these body fully submerged, forming a cushioning elements against lateral movements of pitching, pitch, and sharp heave, which is exposed to the vessel. A large length of the Central float 2 and the lateral floats 3, 4 creates, in addition, antikamnia surfaces that are highly effective and provide the th width. In practice, the width may vary.

The wall of each side of the float is shown as a single part. If necessary, the wall may be partially openwork or formed by successive racks.

The vessel is provided as a General rule, mechanical way (propeller or jet of water, for example), although it can be easily implemented and sailing promotion, because of the possible effects on stability in the transverse direction, choosing appropriately the distance between the Central float 1 and each of the side, which can be equipped with additional ballast to ensure the availability of adjustable lateral ballast compensating roll aboard.

The preferred design of the invention, applicable to the described variants of implementation is as shown in Fig. 11, the hinge lock side floats 3, 4 around the longitudinal axes 28, 29 and position control floats by means of a power cylinder 30, 31. According to the variant of Fig.12 lateral floats have retractable telescopic sections 31, 41operated power cylinders 32, 33.

In addition, as stated above, in accordance with the preferred construction of the s on the side floats, and Central float or hull to create a dynamic lifting force, providing partial unloading of the vessel, and also to interact with stabilizers pitching and pitch by controlling the draught of the vessel. In addition, between the Central float and the walls of the lateral floats to tunnel air intake to form a load-bearing cushions and shock absorbers can be provided by a flexible skirt (not shown).

According to the above, in accordance with the preferred construction according to the invention, the platform 1 forms a bearing cargo case. It is possible for some applications that the platform will be replaced by other means of communication, for example, by brackets 17, 18 (Fig. 12). The brackets 17, 18 can be formed independently using consecutive cross beams or continuous canvas.

1. Multihull vessel containing the Central float associated with at least two side floats, characterized in that the surface area of the water-lines of the side floats and the distance between their diametral planes and diametral plane only ship in the area extending in height by an amount equal to at least 6% of the vessel, selected from the following equation:

< / BR>
where n is the number of lateral floats;

Sithe area of the waterline lateral float, m2;

dithe distance between the diametral plane of the i-th side of the float and diametral plane of the entire vessel, m;

- the ship's displacement, t;

BG the distance between the centre of gravity and centre of buoyancy, m,

with this Central float is the ratio of its width to draught, measured up to his current waterline, at least equal to 1.0, and the ratio of its length to width is at least an 8.0.

2. Vessel under item 1, characterized in that the maximum displacement of the at least two side floats equal to 20% of the full displacement of the ship.

3. The ship is on PP.1 and 2, characterized in that the maximum length of one side of the float is equal to 40% of the length of the Central float, measured in the plane of its waterline.

4. The ship is on PP.1 to 3, characterized in that the side floats are made with constant cross-sections of their water-lines at its height.

5. The ship is on PP.1 to 4, characterized in that the waterline in each side of the float is made ovoid or pterygoid forms in the plan.

6. The ship is on PP. 1 5, featuring

7. The ship is on PP.1 to 5, characterized in that each lateral float is made with a section of rectangular shape in vertical lateral projection and stem, which continues to this place and having an inclined section, oriented toward the forward end of the ship.

8. Vessel under item 7, characterized in that each side float with its sloping section of the stem profiled in the shape of a trapezoid in a vertical lateral projection.

9. The ship is on PP.1 to 8, characterized in that each lateral float is made with a cylindrical or ellipsoidal body is placed in its lower part.

10. The ship is on PP.1 to 9, characterized in that the case stands for the stem of the corresponding side of the float, forming capusule.

11. Vessel under item 1, characterized in that the side floats are connected to the Central hinge and performed with the power cylinders to rotate around the axes of the hinges.

12. Vessel under item 1, characterized in that each float is made with telescopically extendable section and a power cylinder for his nomination.

13. Vessel under item 1, characterized in that the floats are made with a stabilizing bearing surfaces.

14. Sudeten, it is made with ailerons, stabilizers pitching side, located on the inner sides of the side floats.

Priorities for items:

17.04.91 on PP.1 11,14,15;

17.01.92 on PP.12, 13.

 

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