Disposable catamaran

Abstract

The present invention discloses a disposable catamaran, comprising a main hull, a submersible body and a connecting bridge connecting the main hull and the submersible body. When the catamaran is hit near the waterline and causes the submersible body or the connecting bridge to be damaged, the submersible body and the connecting bridge are separated from the main hull by blasting, so that the catamaran is transformed into a high-speed planing boat relying on the V-shaped main hull.

Description

Technical Field

[0001] The invention relates to a disposable catamaran. Background Art

[0002] A catamaran is a ship that is made up of two monohulls that are laterally connected. Due to its slender hull, the catamaran reduces the wave resistance suffered by the hull and has a higher speed; at the same time, because the width of the catamaran is much larger than that of a monohull, it has higher stability and can withstand larger winds and waves. In China, the development of catamarans can be traced back to 2,000 years ago, when the "fang" similar to a catamaran appeared. The development of catamaran technology has been very mature so far, and the research and simulation of both speed and stability are relatively complete. It is precisely because of the advantages of catamarans such as good speed, high stability and good maneuverability that they are widely used in military and civilian ships in various countries around the world. Therefore, it is very necessary to consider the compensatory strategy of catamarans when facing attacks. Summary of the invention

[0003] The life of a catamaran is relatively short, because it is difficult to continue to use it if one side is damaged when facing an attack, which not only consumes a lot of materials for building the catamaran, but also causes pollution to the marine environment after the entire ship is abandoned. Based on this shortcoming, the present invention provides a disposable catamaran, which can abandon the damaged submersible body and connecting bridge, so that the catamaran can be transformed into a high-speed planing boat relying on the V-shaped main hull, prolonging the survival time of the ship when it is attacked and exerting the maximum performance of the ship. The disposable catamaran provided by the present invention has a speed that increases instead of decreasing after being hit, which can make up for some of the losses caused by the damage to the ship.

[0004] According to one aspect of an embodiment of the present invention, there is provided a disposable catamaran, which includes a main hull, a submerged body and a connecting bridge connecting the main hull and the submerged body. When the catamaran is hit near the waterline so that the submerged body or the connecting bridge is damaged, the submerged body and the connecting bridge are detached from the main hull by blasting, so that the catamaran is transformed into a high-speed planing boat relying on the V-shaped main hull.

[0005] In some examples, a first sliding control track structure capable of blasting to separate the two is provided at the connection between the connecting bridge and the main hull, and a second sliding control track structure capable of blasting to separate the two is provided at the connection between the connecting bridge and the lower submerged body; the first sliding control track structure includes: a first track, the first track is fixed to the side of the main hull; and a first slider, the first slider is fixedly connected to the connecting bridge, the first slider is placed on the first track, and it can move on the first track without restraint, and the part of the first slider in the first track is fixedly connected to the first track by a first explosive bolt; the second sliding control track structure includes: a second track, the second track is fixed to the bottom of the connecting bridge; and a second slider, the second slider is fixedly connected to the lower submerged body, the second slider is placed on the second track, and it can move on the second track without restraint, and the part of the second slider in the second track is fixedly connected to the second track by a second explosive bolt.

[0006] In some examples, the submerged body is arranged at a specific angle with the main hull to generate lift caused by water, so that the submerged body obtains a force away from the main hull when detaching.

[0007] In some examples, the specific angle is 2 degrees.

[0008] In some examples, the submerged body has a built-in smoke bomb.

[0009] In some examples, the lower submersible releases the built-in smoke bomb during the period of time when it relies on inertial navigation after separation.

[0010] In some examples, the submerged body has built-in metal foil strips, which fly into the air after being attacked, interfering with the operation of enemy radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0012] Figure 1 The diagram is a top view of a catamaran provided by an embodiment of the present invention during normal operation.

[0013] Figure 2 It is a schematic right side view of a catamaran provided by one embodiment of the present invention during normal operation.

[0014] Figure 3 It is a schematic diagram of the separation of the catamaran sliding control track structure provided by one embodiment of the present invention.

[0015] Figure 4The figure is a schematic diagram of the structure of a catamaran sliding control track provided by one embodiment of the present invention.

[0016] Figure 5 The figure is a side view of a catamaran sliding control track structure provided by one embodiment of the present invention.

[0017] Figure 6 It is a schematic diagram of the completion of the detachment of the lower submerged body of a catamaran when it is attacked provided by an embodiment of the present invention.

[0018] Figure 7 It is a schematic diagram of the completion of the detachment of the catamaran connecting bridge provided by one embodiment of the present invention.

[0019] Figure 8 It is a schematic diagram of a catamaran separated into a monohull provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] like Figure 1 , Figure 2 As shown, the catamaran includes a main hull 5, symmetrically designed submersible bodies 1 and 3, and a connecting bridge 8 connecting the main hull 5 and the two submersible bodies 1 and 3. The main hull 5 can be designed as a double-stage break type, the submersible bodies 1 and 3 can be designed as a V-shape, and the connecting bridge 8 is a non-closed curve. When the catamaran is sailing normally, the two broken steps on the bottom of the main hull 5 effectively enhance air lubrication and significantly reduce the sailing resistance. The main hull 5 superstructure 4 is equipped with a camera 6 and a radar 7. The submersible bodies 1 and 3 are deep V-shaped, and when sailing normally, they are all submerged in water, which can effectively reduce resistance and increase speed. The hull is equipped with a diesel engine, a speed-increasing gearbox, and a water jet propulsion. Powered by a diesel engine, the water jet propulsion of the left and right submersible bodies 1 and 3 is operated through a power transmission device such as a speed-increasing gearbox and a transmission shaft to drive the catamaran to sail.

[0021] The present invention considers that the medium interface of the small waterplane area catamaran is easily hit and damaged, causing the ship to lose its original navigation performance, and in severe cases, it may even sink, making it impossible to carry out navigation tasks normally. A disposable catamaran is proposed. The catamaran includes a first sliding control track structure arranged at the connection between the connecting bridge 8 and the main hull 3, which can be exploded to separate the two, and a second sliding control track structure arranged at the connection between the connecting bridge 8 and the submerged bodies 1, 3, which can be exploded to separate the two. If the catamaran is hit near the waterplane surface, the connecting bridge 8 and the submerged bodies 1, 3 are damaged and cannot maintain integrity, the sliding control track structure can be activated to explode, so that the submerged bodies 1, 3, the connecting bridge 8 and the main hull 5 are separated, so that the main hull 5 can quickly leave.

[0022] Figure 3 , Figure 4 , Figure 5The slide control track structure is shown. The first slide control track structure includes a first track, a first slider and a first explosive bolt. The second slide control track structure includes a second track, a second slider and a second explosive bolt. The terms "first" and "second" are only used to distinguish the two slide control track structures and their components, and do not represent the quantity. Since the two slide control track structures are the same, when combined with the drawings in the specification, the first track and the second track can be expressed as track 9, the first slider and the second slider can be expressed as track 10, and the first explosive bolt and the second explosive bolt can be expressed as explosive bolt 12.

[0023] The first sliding control track structure: its track 9 is fixed on the side of the main hull 5, the slider 10 is fixedly connected to the connecting bridge 8 by screws 13, the slider 10 is placed on the track 9, and the slider 10 can move on the track 9 without constraints, and the part 11 of the slider 10 in the track 9 is fixedly connected to the track 9 by explosive bolts 12. When the ship is sailing normally, the explosive bolts 12 and the fixed slider 10 can well limit the relative position of the connecting bridge 8 and the main hull 5. After the connecting bridge 8 of the hull is hit, the explosive bolts 12 connecting the slider 10 and the track 9 catch fire and explode and break, and the slider 10 loses the ability to limit the connecting bridge 8. At the same time, because the main engine stops supplying energy to the submerged bodies 1 and 3, the connecting bridge 8 and the submerged bodies 1 and 3 move backward along the track 9 relative to the main hull 5, and because of the outward angle, the collision between the connecting bridge 8 and the main hull 5 is avoided.

[0024] The second sliding control track structure: its track 9 is fixed to the bottom of the connecting bridge 8, the slider 10 is fixedly connected to the submerged bodies 1 and 3 by screws 13, the slider 10 is placed on the track 9, and the slider 10 can move on the track 9 without constraints, and the part 11 of the slider 10 inside the track 9 is fixedly connected to the track 9 by explosive bolts 12. When the ship is sailing normally, the explosive bolts 12 and the fixed slider 10 can well limit the relative position of the connecting bridge 8 and the submerged bodies 1 and 3. After the connecting bridge 8 of the hull is hit, the explosive bolts 12 connecting the slider 10 and the track 9 catch fire and explode and break, the slider 10 loses the ability to limit the connecting bridge 8 and the submerged bodies 1 and 3, the damaged submerged body quickly sinks into the water, and the undamaged side sails along the track 9 for a period of time by inertia to achieve separation.

[0025] In order to solve the problem that the submerged bodies 1, 3 and the connecting bridge 8 are close to the main hull 5 when detaching and thus affect the movement of the main hull 5, the present invention arranges the submerged bodies 1, 3 and the main hull 5 at a specific angle to generate lift caused by water, so that the submerged bodies can obtain a certain force away from the main hull when detaching, avoiding mutual influence or even collision. In one embodiment, the specific angle can be 2 degrees.

[0026] Combine the following Figure 6 to Figure 8The separation process of the connecting bridge and the lower submerged body under different damage conditions is described in detail.

[0027] One side of the submerged body is damaged:

[0028] (1) The damaged lower hull 3 takes in water, the ship tilts to the damaged side, the draft increases, and the speed decreases. The explosive bolts 12 connecting the lower hulls 1 and 3 with the connecting bridge 8 explode, disconnecting the lower hulls 1 and 3 from the connecting bridge 8. After the damaged lower hull 3 takes in water, it quickly sinks into the water and separates from the main hull 5.

[0029] (2) The lower hull 1 on the undamaged side, because its axis of symmetry is at an angle to the direction of the initial velocity, will generate lift perpendicular to the lower hull 1 and resistance in the opposite direction of the initial velocity, similar to the principle of a rudder. At this time, most of the main hull 5 is in the air, while most of the lower hull 1 is in the water. The water resistance of the lower hull 1 is much greater than that of the main hull 5.

[0030] (3) The main hull 5 maintains a relatively high speed and sails in the direction of the initial velocity, while the undamaged submerged body 1 will be pulled away from the main hull 5 by a relatively large distance under the action of lift and drag, thereby achieving separation of the submerged body 1 from the main hull 5. After separation, the undamaged submerged body 1 sails for a certain distance by inertia, while releasing its built-in smoke bomb to confuse the enemy.

[0031] (4) After the main hull 5 is separated from the submersible bodies 1 and 3, the explosive bolts 12 connecting the main hull 4 and the connecting bridge 8 explode. The connection between the main hull 5 and the connecting bridge 8 is disconnected. The water jet propulsion device on the main hull 5 starts to operate, causing the main hull 5 to accelerate. After being separated, the connecting bridge 8 encounters greater resistance in the water and sinks as it takes in water, and will be separated from the main hull 5. After the submersible bodies 1 and 3 and the connecting bridge 8 are separated, the main hull will continue to perform its mission. In other words, the catamaran will become a high-speed planing boat relying on the V-shaped main hull, which will extend the survival time of the boat when attacked.

[0032] One side of the connecting bridge 8 is damaged:

[0033] (1) After the connecting bridge 8 is damaged, the navigation state of the ship remains unchanged temporarily, but the connecting function of the connecting bridge 8 is weakened, so it needs to be detached as soon as possible. First, detach from the two undamaged submerged bodies 1 and 3, and then detach from the connecting bridge 8. The detachment process is the same as when one side of the submerged body is damaged.

[0034] (2) The submersible bodies 1 and 3 are equipped with metal foil strips. When attacked, the foil strips fly into the air and interfere with the operation of the enemy radar.

[0035] (3) Damage to the main hull 5: The main hull 4 is not initially submerged in water, and its damage will not affect the navigation performance.

[0036] When the hull is sailing normally, based on the speed advantage of the small waterplane surface ship, the ship type designed by the present invention can reach 42.1kn through theoretical calculation. When the waterplane is hit, the separation process is implemented, and the rapidity and continuity of the separation can be guaranteed by using the gliding control track structure that can be exploded. After the submerged body and the connecting bridge are separated, the submerged body can play a residual role, that is, spraying metal foil strips to interfere with the enemy's radar observation behavior and cover the main hull to perform tasks. After the catamaran is separated, it becomes a high-speed planing boat relying on the V-shaped main hull part. The planing boat is powered by a diesel engine, and the power is transmitted through the speed-increasing gearbox and the drive shaft. The water jet propulsion propulsion is used to push forward. The speed can reach 56.8kn when moving at full speed. It can be seen that the present invention can obtain a new type of ship whose speed does not decrease but increases after being hit.

Claims

1. A disposable catamaran, characterized in that: The catamaran comprises a main hull, a submerged body and a connecting bridge connecting the main hull and the submerged body. When the catamaran is hit near the waterline and the submerged body or the connecting bridge is damaged, the submerged body and the connecting bridge are separated from the main hull by explosion, so that the catamaran becomes a high-speed planing boat relying on the V-shaped main hull. The submerged body is equipped with a smoke bomb. The submerged body releases the built-in smoke bomb during the period of inertial navigation after separation. A first sliding control track structure capable of being separated by explosion from the connecting bridge and the main hull is provided at the connection between the connecting bridge and the submerged body, and a second sliding control track structure capable of being separated by explosion from the connecting bridge and the submerged body is provided at the connection between the connecting bridge and the submerged body; The first slide control track structure comprises: a first track, the first track being fixed on the side of the main hull; a first slider, the first slider being fixedly connected to the connecting bridge, the first slider being placed on the first track and being able to move on the first track without being constrained, and a portion of the first slider in the first track being fixedly connected to the first track via a first explosive bolt; The second sliding control track structure includes: a second track, which is fixed to the bottom of the connecting bridge; a second slider, which is fixedly connected to the lower submersible body, and the second slider is placed on the second track and can move on the second track without constraints. The part of the second slider inside the second track is fixedly connected to the second track by a second explosive bolt.

2. The disposable catamaran according to claim 1, characterized in that: The submerged body is arranged at a specific angle with the main hull to generate lift caused by water, so that the submerged body obtains a force to move away from the main hull when detaching.

3. The disposable catamaran according to claim 2, characterized in that: The specific angle is 2 degrees.

4. The disposable catamaran according to claim 1, characterized in that: The submerged body is internally provided with metal foil strips, which fly into the air after being attacked, thus interfering with the operation of enemy radar.

Images