An underwater pre-positioned missile inflatable floating device

Abstract

This invention discloses an underwater pre-positioned missile inflatable floating device, belonging to the field of underwater missile launch. The invention includes a floating device, a detachable cable lock ring, cables, a compressed air cylinder, a control valve, a flexible pipe, and a counterweight. Multiple cables are provided on the outer side of the floating device, with both ends connected to the detachable cable lock ring; multiple cables are also provided on the inner side of the floating device, with one end connected to the floating device and the other end connected to the detachable cable lock ring. Due to the traction of the cables at the missile's tail, the missile can hover at a depth of several meters underwater, launching from near the water surface. This invention enables the missile to hover near the water surface, thus achieving near-surface launch and solving problems such as velocity attenuation, trajectory deflection, and missile flight attitude divergence caused by launching from deeper seabeds, improving the stability and reliability of missile launches. The detachable cable lock ring allows the missile to quickly jettison the floating device after emerging from the water.

Description

Technical Field

[0001] This invention belongs to the field of underwater missile launch and relates to an underwater pre-positioned missile inflatable floating device. Background Technology

[0002] Pre-positioned underwater missiles refer to missiles that are placed on the seabed in advance and activated during wartime via remote control or target information to perform combat missions such as intelligence reconnaissance, underwater assault, sea lane blockade, and key area control. Pre-positioned underwater missiles have strong stealth and mobility and are an important means for modern navies to conduct strategic deterrence and combat.

[0003] The underwater launch environment for missiles is extremely complex. The missile's journey from initial launch to full exit from the water is divided into two phases: the underwater phase and the exit phase. Although the distance and time the missile spends underwater are short, its trajectory and underwater attitude are highly susceptible to the influence of the underwater environment. When the missile moves upwards in the water, it needs to overcome significant fluid resistance. Since fluid resistance is proportional to the square of the missile's velocity, this leads to a sharp increase in velocity loss in deep-water missiles, greatly increasing the probability of interception. Secondly, if the missile is deployed on the seabed, the greater launch depth significantly increases the time it spends underwater, further amplifying the impact of fluid resistance and causing severe divergence in its flight attitude, affecting launch safety. Therefore, launching from underwater closer to the surface effectively avoids the influence of the underwater environment during launch, thereby improving the missile's launch accuracy and stability. Summary of the Invention

[0004] The main objective of this invention is to provide an underwater pre-positioned missile inflatable floating device. By installing a floating device on the missile body, the positive buoyancy generated by the floating device allows the missile to float in water close to the sea surface. This invention selects to launch the missile in water close to the sea surface, which can reduce the fluid resistance encountered by the missile when moving in the water, and avoid the problems of a sharp increase in missile speed loss and trajectory deflection caused by launching from deeper seabeds.

[0005] The objective of this invention is achieved through the following technical solution.

[0006] The present invention discloses an underwater pre-positioned missile inflatable floating device, comprising a floating device, a detachable cable locking ring, a cable, a compressed air cylinder, a control valve, a flexible pipe, and a counterweight.

[0007] The floating device is an inflatable airbag made of rubber. When inflated and unfolded, the floating device presents a semi-circular shape. Preferably, two floating devices are provided, which are symmetrically installed below the missile's nose.

[0008] This invention modifies the shape of the missile body by creating an annular groove on the top of the missile body. A row of grooves is also provided on the surface of the missile body where the annular groove is located, as well as above and below the annular groove. Each row of grooves consists of multiple grooves evenly distributed along the circumference of the missile body. Each groove contains a detachable cable locking ring with a detachment function. The detachable cable locking ring consists of a cable locking ring and an explosive bolt. The explosive bolt contains explosives and a detonation device. When the detonation device receives a signal, it ignites the explosives, cutting the entire bolt and thus separating the detachable cable locking ring from the missile body.

[0009] The outer side of the flotation device is provided with multiple cables, which are arranged along the central axis of the missile, and both ends of the cables are connected to a detachable cable locking ring; the inner side of the flotation device is provided with multiple cables, one end of which is connected to the flotation device, and the other end of which is connected to the detachable cable locking ring.

[0010] The compressed gas cylinder is located inside the missile. Flexible pipes are provided at both ends of the compressed gas cylinder and connected to the floating device. The flexible pipes are equipped with control valves and are made of silicone rubber. The flexible pipes can extend and retract at will according to the distance between the floating device and the missile body.

[0011] A detachable cable lock ring is provided at the tail of the missile. The detachable cable lock ring is connected to the cable, and the other end of the cable is connected to the counterweight.

[0012] Furthermore, if the missile carries the deployed flotation device while flying in the air, it will experience greater air resistance, thus affecting its flight speed. Therefore, the missile can quickly jettison the flotation device after contacting the air to reduce air resistance and ensure that it can maintain its original launch speed after leaving the water, thereby improving its strike effectiveness.

[0013] Furthermore, the length of the cable between the detachable cable lock ring at the tail of the missile and the counterweight should be set according to the depth of the specific sea area where the missile is deployed, so that the missile can hover underwater within a predetermined distance from the sea surface.

[0014] The present invention discloses a working method for an underwater pre-positioned missile inflatable floating device: the floating device has two working states, namely a folded state and an unfolded state. The folded state is the state when the missile is not inflated. This state mainly occurs from the initial release of the missile until it falls to a depth of about a few meters underwater. At this time, the cable used to fix the floating device is folded and stored on the surface of the missile body, the surface of the floating device, and the inside. The unfolded state is the state after the floating device is inflated. In this state, the floating device can generate a large positive buoyancy to make the missile float in the water. At this time, the cable is taut, which plays a role in fixing and stabilizing the floating device.

[0015] After the missile is released into the target sea area, it sinks under its own weight. When the missile sinks to a depth of about a few meters below the sea surface, the control valve immediately opens, using compressed air cylinders to inflate the flotation device. The flotation device then unfolds and rapidly increases in size. Once the flotation device reaches the predetermined size, the control valve closes, stopping the inflator. After entering the water, the missile gradually decelerates due to the effects of fluid viscous drag, buoyancy, and gravity. When the missile reaches its lowest point, it begins to slowly rise under the influence of buoyancy. Due to the traction of the cable at the tail of the missile, when it rises to a point relatively close to the sea surface, the missile stops rising and hovers in the water, awaiting the launch command.

[0016] When a target appears or an attack order is received, the detachable cable lock at the tail of the missile separates from the missile. Under the influence of buoyancy, the missile continues to rise and eventually floats on the water surface, maintaining an upright posture throughout the entire process. Then, the missile ignites and launches. After the missile leaves the water, the detachable cable locks inside the flotation device and above and below separate from the missile, allowing the missile to strike the enemy target.

[0017] Beneficial effects:

[0018] 1. The present invention discloses an underwater pre-positioned missile inflatable floating device. This floating device allows the missile to be suspended near the water surface, thereby enabling the missile to be launched near the water surface. Compared with the traditional method of launching missiles in deep water or on the seabed, it can solve the problems of velocity attenuation, trajectory deflection, and missile flight attitude divergence caused by launching missiles at deeper seabeds, thereby improving the stability and reliability of missile launch.

[0019] 2. The present invention discloses an underwater pre-positioned missile inflatable floating device, which uses a detachable cable locking ring to allow the missile to quickly discard the floating device after it emerges from the water. This reduces the drag encountered by the missile when flying in the air, ensures that the missile can maintain its original launch speed after emerging from the water, and improves the missile's strike effect.

[0020] 3. The underwater pre-positioned missile inflatable floating device disclosed in this invention allows the missile to hover smoothly at a depth of several meters underwater due to the traction of the cable at the tail of the missile. This ensures the missile's stealth and enables it to be launched from ambush near the water surface, giving it strong mobility.

[0021] 4. The underwater pre-positioned missile inflatable floating device disclosed in this invention has a simple overall structure, is easy to implement, and does not require complicated modifications to the missile, resulting in low modification costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an underwater pre-positioned missile inflatable floating device disclosed in this invention;

[0023] Figure 2 This is the three-dimensional model of the present invention;

[0024] Figure 3 This is a magnified view of a portion of the missile's warhead;

[0025] Figure 4 This is a schematic diagram of the detachable cable locking ring in this invention;

[0026] Figure 5 This is a top view of the missile with its flotation device deployed.

[0027] Figure 6 This is a diagram of the missile's internal structure with the flotation device deployed.

[0028] Figure 7 This is a diagram of the missile's internal structure with the flotation device folded down.

[0029] Figure 8 This is a magnified view of a portion of the missile's tail.

[0030] Figure 9 This is a schematic diagram of the missile's connection to the counterweight underwater;

[0031] Figure 10 This is a schematic diagram illustrating the different stages of a missile's emergence from the water.

[0032] In the diagram: 1—floating device, 2—detachable cable lock ring, 201—cable lock ring, 202—explosive bolt, 3—cable, 4—compressed gas cylinder, 5—control valve, 6—flexible pipe, 7—counterweight. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] To address the problems of missile flight speed reduction, large trajectory deflection, and missile flight attitude divergence caused by the large launch depth of traditional underwater pre-positioned missiles, this embodiment discloses an inflatable floating device for underwater pre-positioned missiles. This device enables the missile to remain underwater close to the sea surface, and the near-horizontal launch method can greatly improve the stability and reliability of missile launch and increase launch accuracy.

[0035] like Figure 1 , Figure 2 and Figure 6 As shown in the figure, this embodiment discloses an underwater pre-positioned missile inflatable floating device, which includes a floating device 1, a detachable cable locking ring 2, a cable 3, a compressed air cylinder 4, a control valve 5, a flexible pipe 6, and a counterweight 7.

[0036] like Figure 2 and Figure 5As shown, the floating device 1 is an inflatable airbag made of rubber material. After being inflated and unfolded, the floating device 1 presents a semi-circular shape. In this embodiment, a total of 2 floating devices 1 are required, and the 2 floating devices 1 are symmetrically installed below the missile's nose.

[0037] like Figure 3 As shown, this embodiment modifies the shape of the missile body, creating an annular groove on the top of the missile body. A row of grooves is also provided on the surface of the missile body where the annular groove is located, and above and below the annular groove. Each row of grooves consists of multiple grooves evenly distributed along the circumference of the missile body. Each groove contains a detachable cable locking ring 2 with a detachment function. The detachable cable locking ring 2 consists of a cable locking ring 201 and an explosive bolt 202. Figure 4 As shown, the explosive bolt 202 contains explosives and a detonation device. When the detonation device receives a signal, it ignites the explosives, causing the entire bolt to be cut off, thereby separating the detachable cable lock ring 2 from the projectile.

[0038] like Figure 6 and Figure 7 As shown, the floating device 1 has multiple cables 3 on its outer side, which are arranged along the central axis of the missile. Both ends of the cables 3 are connected to the detachable cable locking ring 2. The floating device 1 has multiple cables 3 on its inner side, with one end of the cables 3 connected to the floating device 1 and the other end of the cables 3 connected to the detachable cable locking ring 2.

[0039] The compressed gas cylinder 4 is located inside the missile. The gas loaded in the compressed gas cylinder 4 is compressed air or compressed nitrogen. Both ends of the compressed gas cylinder 4 are provided with flexible pipes 6 connected to the floating device 1. The flexible pipes 6 and the floating device 1 are watertight. The flexible pipes 6 are provided with control valves 5. The flexible pipes 6 are made of silicone rubber material. The flexible pipes 6 can extend and retract at will according to the distance between the floating device 1 and the missile body.

[0040] like Figure 8 and Figure 9 As shown, a detachable cable lock ring 2 is provided at the tail of the missile. The detachable cable lock ring 2 is connected to a cable 3. The other end of the cable 3 is connected to a counterweight 7. The length of the cable 3 is set according to the depth of the seabed. The counterweight 7 has a large weight. After the counterweight 7 is launched into the target sea area, it will sink into the seabed quickly and will not move even if affected by the current below the sea surface. The purpose of setting the counterweight 7 is to limit the movement range of the missile and make the missile more accurately launched into the target sea area.

[0041] In this embodiment, the floating device 1 has two working states: a folded state and an unfolded state, such as... Figure 7The diagram shows a cross-sectional view of the missile's nose and body with the flotation device 1 in a folded state. The folded state represents the missile's uninflated state, which primarily occurs from the initial launch until the missile descends to a depth of several meters underwater. During this time, the cable 3 used to secure the flotation device 1 is folded and stored on the surface of the missile body, the surface of the flotation device 1, and its inner side. Figure 6 The diagram shows a cross-sectional view of the missile's nose and body when the flotation device 1 is in the deployed state. The deployed state is the state after the flotation device 1 is inflated. In this state, the flotation device 1 can generate a large positive buoyancy to make the missile float in the water. At this time, the cable 3 is taut and can play a role in fixing and stabilizing the flotation device 1.

[0042] like Figure 10 As shown, after the missile is launched into the target sea area, it sinks under its own weight. When the missile sinks to a depth of about a few meters below the sea surface, the control valve 5 immediately opens, using the compressed air cylinder 4 to inflate the flotation device 1. The flotation device 1 then unfolds, rapidly increasing in size. Once the flotation device 1 reaches the predetermined size, the control valve 5 closes, stopping the inflator. After entering the water, the missile gradually decelerates due to the effects of fluid viscous resistance, buoyancy, and gravity. When the missile reaches its lowest point, it begins to slowly rise under the influence of buoyancy. Due to the traction of the cable 3 at the tail of the missile, when the missile rises to a point relatively close to the sea surface, it stops rising and hovers in the water, awaiting the launch command.

[0043] When the target appears or an attack order is received, the detachable cable lock 2 at the tail of the missile separates from the missile. Under the action of buoyancy, the missile continues to rise and eventually floats on the water surface. Throughout the entire rising process, the missile body maintains an upright posture. Then the missile is ignited and launched. After the missile leaves the water, the explosive inside the explosive bolt 202 is rapidly detonated, causing the detachable cable lock 2 above, inside, and below the flotation device 1 to separate from the missile, thereby separating the flotation device 1 from the missile and finally striking the target.

[0044] Traditional underwater pre-launched missiles are typically launched from the seabed. While this significantly improves the missile's stealth, the seabed environment is extremely complex, making the missile's trajectory highly susceptible to its influence. As the missile moves from the seabed to the surface, it must overcome significant fluid resistance, causing a substantial decrease in velocity upon exiting the water. Furthermore, the greater the launch depth, the longer the missile spends underwater, making its trajectory prone to deviation due to fluid resistance. This invention avoids this limitation by launching from underwater closer to the surface. This preserves the missile's stealth capabilities and eliminates the influence of seabed depth on its launch attitude and velocity, significantly improving launch accuracy and ensuring a higher success rate.

[0045] If the missile carries the deployed flotation device 1 in the air, it will experience greater air resistance, which will affect its flight speed. Therefore, the missile quickly jettisons the flotation device 1 after contacting the air, thereby greatly reducing the air resistance encountered by the missile and ensuring that the missile can maintain its original launch speed after leaving the water, thus improving the missile's strike effect.

[0046] The length of the cable 3 between the detachable cable lock ring 2 at the tail of the missile and the counterweight 7 should be set according to the depth of the specific sea area where the missile is deployed, so that the missile can hover just below the sea surface.

[0047] Furthermore, the structure of this floating device is very simple, requiring no complicated modifications to the missile.

[0048] The above detailed description further illustrates the purpose, technical solution, and beneficial effects of the invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An underwater pre-positioned missile inflatable floating device, characterized in that: It includes a floating device (1), a detachable cable lock ring (2), a cable (3), a compressed gas cylinder (4), a control valve (5), a flexible pipe (6), and a counterweight (7); The floating device (1) is an inflatable airbag that unfolds into a semi-circular shape; the floating device (1) is installed below the missile's nose. The detachable cable locking ring (2) is set in the grooves opened above, inside and below the floating device (1); The floating device (1) is provided with a cable (3) on the outside. The cable (3) is arranged along the central axis of the missile. Both ends of the cable (3) are connected to the detachable cable lock ring (2). The floating device (1) is provided with a cable (3) inside. One end of the cable (3) is connected to the floating device (1), and the other end of the cable (3) is connected to the detachable cable lock ring (2). The compressed gas cylinder (4) is installed inside the missile. The gas loaded in the compressed gas cylinder (4) is compressed air or compressed nitrogen. Flexible pipes (6) are provided at both ends of the compressed gas cylinder (4) and connected to the floating device (1). The flexible pipes (6) and the floating device (1) are watertight. A control valve (5) is provided on the flexible pipes (6). The missile tail is provided with a detachable cable lock ring (2), which is connected to a cable (3), and the other end of the cable (3) is connected to a counterweight (7).

2. The underwater pre-positioned missile inflatable floating device according to claim 1, characterized in that: The detachable cable lock ring (2) consists of a cable lock ring (201) and an explosive bolt (202). The explosive bolt (202) contains explosives and an initiation device. When the initiation device receives a signal, it ignites the explosives, causing the entire bolt to be cut off, thereby achieving the separation of the detachable cable lock ring (2) from the projectile.

3. The underwater pre-positioned missile inflatable floating device according to claim 1, characterized in that: The flexible pipe (6) can extend or retract at will according to the distance between the floating device (1) and the projectile.

4. The underwater pre-positioned missile inflatable floating device according to claim 1, characterized in that: The length of the cable (3) is set according to the depth of the seabed so that the missile can hover underwater at a preset distance from the sea surface.

5. The underwater pre-positioned missile inflatable floating device according to claim 1, characterized in that: The floating device (1) is made of rubber material.

6. The underwater pre-positioned missile inflatable floating device according to claim 1, characterized in that: Two floating devices (1) are provided, which are symmetrically installed below the missile's nose.

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