WO2018218755A1

WO2018218755A1 - Planing boat

Info

Publication number: WO2018218755A1
Application number: PCT/CN2017/093662
Authority: WO
Inventors: 张瑞
Original assignee: 广船国际有限公司
Priority date: 2017-05-31
Filing date: 2017-07-20
Publication date: 2018-12-06
Also published as: CN107140109A

Abstract

Disclosed is a planing boat, comprising a hull (1), the bottom of the hull (1) being provided with several steps spaced apart in the length direction of the hull (1); each step has a first end close to the bow (2) and a second end close to the stern (3); for any two adjacent steps, the height of the second end of the step closer to the side of the bow (2) is greater than that of the first end of the step closer to the side of the stern (3). The planing boat has several steps spaced apart at the bottom of the hull (1), such that when the planing boat planes, every time water flows through a step, it will form a cavity behind the step and form a planing surface close to the second end of the step, such that the water would come into contact with the next step after a certain distance has been passed, and so on; the cavities can reduce the planing resistance of the planing boat to some extent, each planing surface has a small length, i.e. a high span-chord ratio, and therefore the planing resistance of the planing boat is reduced while the planing speed and the acceleration rate of the planing boat are increased.

Description

Planing boat

Technical field

The invention relates to the technical field of ships, and in particular to a planing craft.

Background technique

Conventional monolithic gliding boats are of the slim and long planing type, with a thinner crotch and a smoother bottom at the bottom of the boat for high speed glide. There are many factors affecting the speed of the planing craft, such as the size of the ship, the propulsion system, the navigation environment, etc., and it is a complicated process to achieve the best cooperation with the boat oars. The contradiction is more prominent for the high-speed planing boat. Since the environmental factors cannot be changed, the design of the propulsion system is limited by the existing equipment, and a slight change from the ship type can achieve twice the result with half the effort. The longitudinal position of the center of gravity of the existing single-slide boat does not match the hydrodynamic center, the longitudinal stability is poor, and the speed of the taxi speed is limited, which cannot meet the ever-higher speed requirements; and the length of the bottom of the boat is too long. The potential to reduce the resistance to sliding is not fully utilized.

Therefore, there is an urgent need to break through the existing boat type and improve the performance of the planing craft.

Summary of the invention

It is an object of the present invention to provide a planing craft with low skating resistance.

In order to achieve the above object, the present invention adopts the following technical solutions:

A planing boat is provided, comprising a boat body, the bottom of the boat body being spaced apart from each other along a length of the boat body, the step being provided with a first step adjacent to the first end of the boat and adjacent to the boat a second end portion, wherein the height of the second end of the step closer to the side of the boat is greater than the first end of the step closer to the side of the boat The height of the department.

As a preferred embodiment of the planing boat, a groove extending in the width direction of the boat body is recessed between two adjacent stages, and the opening of the groove faces the bottom of the boat body.

As a preferred embodiment of the planing craft, the angle between the groove and the horizontal plane is less than 90° in the direction of sliding of the planing craft.

In a preferred embodiment of the planing boat, a circular arc transition is provided between the side wall of the groove adjacent to the side of the boat and the first end of the step corresponding thereto.

As a preferred embodiment of the planing craft, the fault is located below the boat of the boat body.

As a preferred embodiment of the planing craft, the fault is located below the boat of the boat body and the boat.

As a preferred embodiment of the planing craft, one side of the boat body is provided with a sheet extending in the longitudinal direction of the boat body.

As a preferred embodiment of the planing boat, both sides of the boat body are provided with sheets extending in the longitudinal direction of the boat body.

As a preferred embodiment of the planing boat, the width of the sheet body gradually increases from the direction of the boat to the boat.

As a preferred embodiment of the planing boat, when the planing boat is slid, the water depth of the sheet body is smaller than the water inlet depth of the boat body.

The invention has the beneficial effects that: by arranging a plurality of faults at the bottom of the boat body, when the planing boat is sliding, each time the water flow passes through a fault, a hole is formed after the fault, and the fault is formed. A sliding surface is formed near the second end portion, and after a certain distance, the next step is contacted, and so on, because the holes can reduce the sliding resistance of the planing boat to a certain extent, and the length of each sliding surface is compared. Short, that is, has a large aspect ratio, thereby reducing the sliding resistance of the planing boat, increasing the taxiing speed of the planing boat and increasing the speed-up rate.

DRAWINGS

The invention will now be described in further detail with reference to the drawings and embodiments.

1 is a side view of a planing craft according to an embodiment of the present invention.

Fig. 2 is a view taken along the line A in Fig. 1;

Figure 3 is an enlarged view of a portion I of Figure 1.

In Figure 1-3:

1, the main body of the boat; 2, the boat; 3, the boat; 41, the first level; 42, the second level; 43, the third level; 51, the first groove; 52, the second groove; 53, a third groove; 6, a sheet; 7, a circular arc transition.

detailed description

The technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only the present invention. Some embodiments, but not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, the terms "connected", "connected", and "fixed" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

In the present embodiment, as shown in FIG. 1 and FIG. 2, the planing boat includes a boat body 1, and along the length direction of the boat body 1, the bottom of the boat body 1 is spaced apart from a plurality of levels, the step having a first end adjacent to the boat 2 and a second end adjacent to the boat 3, of the two adjacent ones of the steps, adjacent to the second end of the step of the side of the boat 2 The height is greater than the height of the first end of the step adjacent to the side of the boat 3. By arranging a plurality of faults at the bottom of the boat body 1, when the planing boat is sliding, each flow of water through a fault will form a cavity after the fault, and the fault is near its second end. Forming a sliding surface, after a certain distance, and then contacting the next breaking stage, and so on, since the holes can reduce the sliding resistance of the sliding boat to a certain extent, and the length of each sliding surface is shorter, that is, it has a larger The aspect ratio (the degree of expansion of the fault), thereby reducing the taxiing resistance of the planing boat, increasing the taxiing speed of the planing boat and increasing the speed-up rate.

The planing craft in this embodiment can reach the maximum speed within 10 minutes, and its maximum speed can reach 70 knots (1 speed = 0.5144m/s). Different sea conditions, the time for the planing boat to reach the maximum speed is different. In the case of good sea conditions, the maximum speed is not more than 5 minutes.

In this embodiment, the number of step settings can be determined according to the length of the planing boat. As shown in FIG. 1 and FIG. 2, the bottom of the boat body 1 is arranged at three intervals along the length direction of the planing craft, and the direction of the boat is toward the boat, which is the first fault level 41, the second fault level 42, and the second. The three-breaking stage 43, in fact, the bottom of the boat's main body 1 near the first breaking stage 41 also corresponds to a longer length. Wherein, when the water flows through the bottom of the boat, a sliding surface is formed on the first breaking stage 41, the second breaking stage 42, and the third breaking stage 43, and the first breaking stage 41, the second breaking stage 42, the third After the step 43 is formed, a cavity is formed to reduce the contact area between the bottom of the boat and the water flow, so that the resistance of the planing boat is reduced, so that after three steps, the sliding resistance of the planing boat can be greatly reduced. .

In the present embodiment, the cross section of the bottom of the planing boat along its length direction has a discontinuous step shape, so it is called "stepping", and the "stepping" is only used to describe the structure of the bottom of the planing boat.

As a preferred embodiment of the present invention, a groove extending in the width direction of the boat body is recessed between two adjacent stages, and the opening of the groove faces the bottom of the boat body. The arrangement of the grooves allows holes to form immediately upon the flow of water through the grooves to reduce the speed-up time of the planing craft. As shown in FIG. 1, the first breaking stage 41 and one end of the bottom of the boat body 1 near the boat 2 are provided with a first groove 51, and a second groove 52 is provided between the first breaking stage 41 and the second breaking stage 42. There is a third groove 53 between the second breaking stage 42 and the third breaking stage 43. During the sliding process, the water flow immediately forms three holes in the three grooves, thereby reducing the speed up time of the planing boat. Increase the speed increase rate and improve the experience of the planing boat.

In a further preferred embodiment of the invention, the angle between the groove and the horizontal plane is less than 90° in the direction of sliding of the planing craft, ie the bottom of the groove is inclined towards the side of the boat 2, so that the groove is inclined The direction is opposite to the direction of the water flow to increase the cavity, reduce the sliding length of the water flow on the step, and reduce the sliding resistance.

The water flows through the groove to form a cavity, and when the hole is too small, the water flow under the hole may be sputtered into the groove, thereby increasing the sliding resistance. To solve the technical problem, the embodiment approaches the boat in the groove. A circular arc transition portion 7 is provided between the side wall on the side of the crucible 3 and the first end portion of the step corresponding thereto (see Fig. 3). By providing the arc transition portion 7, the water flow under the cavity directly slides to the stepped portion through the arc transition portion, preventing the water flow under the cavity from falling into the groove.

In an embodiment of the invention, the step is located below the boat of the boat body 1, and when the planer is sliding on the surface of the water, a portion of the bottom of the boat body 1 near the boat 2 is inevitably in direct contact with the water surface. Therefore, the reduction of the sliding resistance can be achieved by setting the stepping level below the boat.

In another embodiment of the present invention, in order to further reduce the coasting resistance of the planing boat, the speed-up rate of the planing craft is raised, which is located below the boat and the boat 3 of the boat body 1.

In order to ensure that the planing boat is always stable at high speeds, the present invention optimizes the boat body 1. Specifically, as shown in FIGS. 1 and 2, one side of the boat body 1 is provided along the length of the boat body 1. The sheet 6 extending in the direction of the direction.

Preferably, both sides of the boat body 1 are provided with a sheet body 6 extending in the longitudinal direction of the boat body 1. By arranging the sheets 6 on both sides of the boat body 1, the planing boat is prevented from tilting at high speeds or when cornering.

As shown in Fig. 1, the width of the sheet body 6 is gradually increased by the direction of the boat 2 toward the boat 3, which reduces the sliding of the planing boat while maintaining the smoothness of the planing boat. The impact of speed.

Specifically, when the planing boat slides on the water surface, the water inlet depth of the sheet body 6 is smaller than the water inlet depth of the boat body 1 to further reduce the water flow resistance received by the sheet body 6 when the water is too deep.

Two tunnels are formed between the boat body 1 and the two side sheets 6. Under the guidance of the outer sheet body 6, the waves and splashes generated by the boat body 1 enter the tunnel, and at the same time, air and a mixed flow of gas and water are formed. By reducing its wave-making resistance, the wave energy of the boat is recovered and converted into vertical lift. With the aid of lift, the total resistance of the planer is further reduced.

The planing boat in this embodiment has the following advantages over the prior art:

1. Compared with the ordinary single-slide boat, the three-body structure of the present invention has reduced wave-making resistance, greatly improved stability, and is convenient for deck layout.

2. Adding a fault to the bottom of the planing boat can effectively reduce the resistance and thus increase the speed.

3. The boat type combines the advantages of the three-body, the planing boat and the fault class to form a new high-performance boat.

The invention reduces the resistance by adding a step, and increases the speed of the vehicle compared with increasing the power of the host, and the potential economic benefits are immeasurable.

In the description of the present specification, the description of the terms "other embodiments", "preferred embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiments are included in at least one embodiment of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the phase. The same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are merely illustrative of the principles of the invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the invention.

Claims

A planing boat comprising a boat body, characterized in that, along the length direction of the boat body, the bottom of the boat body is spaced apart from a plurality of fault stages, the fault level having a first end adjacent to the boat and being close to a second end of the boat, wherein the height of the second end of the step adjacent to the side of the boat is greater than the level of the step near the side of the boat The height of the first end.
The planing boat according to claim 1, wherein a groove extending in a width direction of the boat body is recessed between two adjacent stages, and an opening of the groove faces the boat The bottom of the body.
The planing craft according to claim 2, wherein the angle between the groove and the horizontal plane is less than 90 in the sliding direction of the planing boat.
The planing boat according to claim 2, wherein a circular arc transition is provided between the side wall of the groove near the side of the boat and the first end of the step corresponding thereto unit.
The planing boat according to claim 1, wherein said step is located below said boat of said boat body.
The planing boat according to claim 1, wherein said step is located below said boat body of said boat body and said boat.
A planing boat according to claim 1, wherein one side of said boat body is provided with a sheet extending in the longitudinal direction of said boat body.
A planing boat according to claim 1, wherein both sides of said boat body are provided with a sheet extending in the longitudinal direction of said boat body.
A planing boat according to claim 7 or 8, wherein the width of the sheet body is gradually increased by the direction of the boat toward the boat.
The planing boat according to claim 9, wherein the water depth of the sheet body is smaller than the water inlet depth of the boat body when the planing boat is slid.