CN110682995A - Planing boat with three-channel structure - Google Patents

Abstract

The invention belongs to the technical field of planing boats, and particularly relates to a planing boat with a three-channel structure. The invention is a further improvement to the channel planing boat. Due to the three-channel design, the bow wave-making and wave loads can be absorbed during high-speed sailing, and the slamming load of the bow wave of the planing boat can be reduced at the same time, and the planing attitude can be improved. , to improve the sailing stability of the planing boat. The invention can form an air film and a splash water flow layer in the channel during high-speed sailing, so as to reduce the load of the wave directly slamming on the bow of the ship. The forward air flow can be guided to the bottom of the boat through the channel, and then the hull is raised to reduce the draft of the boat to reduce the sailing resistance of the planing craft. Compared with the channels on both sides, the channel in the middle is wider and the height of the channel is larger, which enables the air coming from the front to be widely absorbed at the bottom of the hull, and the larger channel width can further Absorb the waves generated by the main hull.

Description

A planing boat with three-channel structure

technical field

The invention belongs to the technical field of planing boats, and particularly relates to a planing boat with a three-channel structure.

Background technique

Compared with conventional ships, planing boats can combine hydrodynamics and aerodynamics better because their lift at higher speeds is formed by the combined action of hydrodynamics and aerodynamics. The function of the channel is to flow compressed air to the bottom of the boat to lift the hull to reduce the draft when the planing boat is sailing at high speed. Planing boats have received extensive attention worldwide.

At present, high-speed planing boats are generally three-hull planing boats with double channels, which have excellent rapidity in still water, but the bow slamming load in waves is very serious, which affects the stability of navigation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a planing boat with a three-channel structure that can absorb the bow wave-making and wave loads during high-speed sailing, reduce the slamming of the bow, further improve the planing attitude, and improve the sailing stability.

The purpose of the present invention is achieved by the following technical solutions: including a main boat hull, the bottom of the main boat hull is provided with a middle channel that runs through the main boat hull's bow to the main boat stern along the longitudinal direction of the main boat hull; the The middle cross section of the middle channel is formed by the main hull with straight walls on both sides and the straight top of the channel, and the top and the side are smoothly transitioned with an arc; the sides of the main hull are provided with sheets Said two side pieces and the main hull respectively form side channels on both sides; the shape of the middle cross section of said side channels is close to the arc form along the longitudinal direction of the ship

The present invention can also include:

The width of the middle channel is larger than the width of the side channels on both sides, and the height of the middle channel is higher than the height of the side channels on both sides; The longitudinal length of the side channel is shorter than the middle channel.

The pieces on both sides of the main hull are of the same size; the middle channel and the side channels on both sides of the main hull are symmetrically distributed with respect to the mid-longitudinal section of the main hull.

The beneficial effects of the present invention are:

The invention can form an air film and a splash water layer in the channel during high-speed sailing, which can reduce the load of waves directly slamming on the bow, thereby improving the stability of the planing boat. Due to the existence of the channel, the forward air flow can be guided to the bottom of the ship through the channel, and then the hull is lifted to reduce the draft of the ship to reduce the sailing resistance of the planing craft. The main part of the channel on both sides is located at the rear of the hull, and the layer of air-water mixture and the layer of splash water in the channel can balance the attitude of the planing boat at high speed. Compared with the channels on both sides, the channel in the middle is wider and the height of the channel is larger, which enables the air coming from the front to be widely absorbed at the bottom of the hull, and the larger channel width can further Absorb the waves generated by the main hull. The transition between the middle channel and the main body is in the form of rounded corners, which is conducive to the continuity of the airflow passing through the middle of the hull along the main body and the smoothness of the wave-making climbing to the top of the channel along the main body of the ship, which improves the planing boat's high-speed sailing. The stability of the flow field can prevent the flow field disorder caused by too sharp corners and the increase of ship resistance caused by this disorder.

Description of drawings

FIG. 1 is a front view of a planing boat with a three-channel structure.

Figure 2 is a side view of a planing boat with a three-channel structure.

FIG. 3 is a schematic diagram of the flow of the incoming flow of a planing boat with a three-channel structure.

FIG. 4 is a schematic diagram of the flow of channels on both sides of a planing boat with a three-channel structure during sailing.

FIG. 5 is a schematic view of the flow from the middle channel of a planing boat with a three-channel structure during sailing.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

The purpose of the present invention is to provide a planing boat with a three-channel structure, which is composed of a main boat body and two side pieces. The three channels are respectively set at the bottom of the main hull and run from the bow to the stern in the longitudinal direction of the hull. The invention is a further improvement to the channel planing boat. Due to the three-channel design, the bow wave-making and wave loads can be absorbed during high-speed sailing, and the slamming load of the bow wave of the planing boat can be reduced at the same time, and the planing attitude can be improved. , to improve the sailing stability of the planing boat.

A planing boat with a three-channel structure, comprising a main boat hull, and the bottom of the main boat hull is provided with a middle channel penetrating from the bow of the main boat hull to the stern of the main boat hull along the longitudinal direction of the main boat hull; The middle cross section of the middle channel is formed by the main boat hull with straight walls on both sides and the straight top of the channel, and the top and the side are smoothly transitioned with an arc; the two sides of the main boat are provided with sheet body; the two side sheet bodies and the main hull respectively form side channels on both sides; the shape of the middle cross section of the side channel is close to the arc form along the longitudinal direction of the ship; the middle channel The width of the channel is larger than the width of the channels on both sides, and the height of the middle channel is higher than that of the channels on both sides.

Example 1:

1 to 5 , the planing boat with the three-channel structure is composed of two pieces 2 of the same size as the main boat hull 1 . The three channels are respectively the middle channel 4 which is arranged at the bottom of the main hull 1 from the bow to the stern along the longitudinal direction of the hull, and the two side channels are respectively surrounded by the two side pieces 2 and the main hull. 3. The length of the sheet body 2 is smaller than that of the main hull 1 , and the longitudinal lengths of the side channels 3 on both sides are also shorter than the middle channel 4 . The middle channel 4 and the side channels 3 on both sides are symmetrically distributed with respect to the mid-longitudinal section of the planing boat. The middle cross section of the middle channel 4 is jointly formed by the ship main body 1 with straight walls on both sides and the straight top of the channel, and the top and the side surface are smoothly transitioned by a circular arc. The shape of the mid-cross section of the channel 3 on both sides is close to the form of an arc along the longitudinal direction of the ship.

As shown in Figure 2: When the planing boat is in a static floating state, the tail tilt phenomenon will appear. At this time, most of the sheet body 2 is below the waterline, the tail of the side channel 3 is completely below the waterline, and the tail of the middle channel 4 is completely below the waterline. It is also below the waterline. At this time, the middle channel and the two sides of the channel are exposed to the water surface near the bow, and most of the rear of the channel is submerged below the waterline.

As shown in Figure 3 and Figure 4: Due to the existence of the three channels, when the planing boat starts to sail, the oncoming air will enter the side channel and be guided to the bottom of the ship through the channel. The channels on both sides 3 The air flow inside will be squeezed by the main hull 1 and the sheet body 2, so that the air flow 5 will be compressed towards the bottom of the boat, and the air flow 5 will be channeled from top to bottom to form an air layer 7 at the top. The gas-water mixture layer 8 and the splash water flow layer 9. Among them, a part of the splash water flow layer 9 comes from the waves generated by the hull itself when sailing, and a part comes from the waves on the water surface during sailing. When the waves on the water surface hit the hull due to the action of the side channel 3, the waves will pass through the air-water mixture layer 8 and the air layer 7 and finally act on the hull, which greatly buffers the slamming load in the headwind environment. .

As shown in Figure 5: the air flow in the middle channel 4 will be squeezed by the main hull 1, which also causes the air flow 5 to be compressed towards the bottom of the boat and be guided to the main hull through the middle channel 4 between 1. The air flow 5 forms an air layer 7 , an air-water mixture layer 8 and a splash water flow layer 9 at the top of the channel from top to bottom. Among them, a part of the splash water flow layer 9 comes from the waves generated by the hull itself when sailing, and a part comes from the waves on the water surface during sailing. When the wave on the water surface hits the hull, due to the action of the middle channel 4, the wave will pass through the air-water mixture layer 8 and the air layer 7 and finally act on the hull instead of directly on the hull, which greatly buffers the welcome Slamming loads in a wave environment. The middle channel 4 can absorb the wave-making when the planing boat is sailing, and at the same time reduce the slamming load of the bow wave of the planing boat. At the same time, the higher channel top of the middle channel 4 makes the climbing path of the wave-making longer. The transition between side 1 and the top is in the form of rounded corners, which makes the incoming flow and the wave-making climb up along the two sides with a good transition effect, and also greatly slows down the wave slamming directly on the top of the bow channel. It is beneficial to improve the safety of the structure of the ship.

The beneficial effects of the present invention are as follows: when the planing boat sails at high speed, due to the existence of the channel, the front air flow can be guided to the bottom of the boat through the channel, and then the hull is lifted to reduce the draft of the boat to reduce the sailing resistance of the planing boat; two The main part of the side channel is located at the rear of the hull, and the layer of air-water mixture and the layer of splash water in the channel can balance the attitude of the planing boat at high speed. Compared with the channels on both sides, the added channel in the middle part has a larger channel width and a larger height of the channel, which enables the air coming from the front to be widely absorbed at the bottom of the hull, and the larger channel width It can further absorb the wave-making generated by the main hull, and at the same time, when the planing boat sails at high speed, an air film and a splash water layer will be formed in the channel, which can reduce the load of the wave directly slamming on the bow, thereby improving the gliding. the stability of the boat. The transition between the middle channel and the main body is in the form of rounded corners, which is conducive to the continuity of the airflow passing through the middle of the hull along the main body and the smoothness of the wave-making climbing to the top of the channel along the main body of the ship, which improves the planing boat at high speed. The stability of the flow field during sailing prevents the flow field disturbance caused by too sharp corners and the increase of ship resistance caused by this disturbance.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. A planing boat with a three-channel structure comprises a main boat body and is characterized in that: the bottom of the main boat body is provided with a middle channel which penetrates from the bow part of the main boat body to the tail part of the main boat body along the longitudinal direction of the main boat body; the middle cross section of the middle channel of the middle part is formed by enclosing a main boat body with two straight-wall sides and a straight top of the channel, and the top and the side are in smooth transition by an arc; the two sides of the main boat body are provided with sheet bodies; the two side sheet bodies and the main boat body respectively enclose side channels at two sides; the middle cross section of the side channel is close to a circular arc form along the longitudinal direction of the ship.

2. A planing boat having a triple channel configuration as claimed in claim 1, wherein: the width of the middle channel is larger than the width of the side channels at the two sides, and the height of the middle channel is higher than the height of the side channels at the two sides; the length of the sheet body is smaller than that of the main boat body, and the longitudinal lengths of the side channels on the two sides are shorter than that of the middle channel.

3. A planing boat having a triple channel structure as claimed in claim 1 or claim 2, wherein: the sizes of the sheet bodies on the two sides of the main boat body are the same; the middle channel and the side channels on two sides of the main boat body are symmetrically distributed relative to the middle longitudinal section of the main boat body.

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