A telescopic deformation and load reduction device for a missile entering water at high speed

Abstract

A missile high-speed water-entry telescopic deformation load-reducing device disclosed by the present invention belongs to the field of missile water-entry buffer load reduction. The present invention includes a rubber outer sleeve, several levels of telescopic devices, one-way valves, high-pressure gas cylinders, gas delivery pipelines, several levels of air cavities, fixing bolts, several levels of limiting devices, and a base. The several levels of telescopic devices form the outer contour of a pointed arch body. The present invention uses several levels of telescopic devices to change the sharpness of the missile head, expand the contact area between the missile head and water per unit time, extend the water-entry time of the missile, and thus reduce the impact load received during the missile water-entry process. The high-pressure gas released inside the high-pressure gas cylinder of the present invention can play a buffering role when the missile enters the water, and can further reduce the impact load received during the missile water-entry process and protect the head structure of the missile. The present invention is in a contracted state during the missile flight process and will be in an extended state when the missile approaches the water line and is about to enter the water, without having other impacts on the missile flight process.

Description

Technical Field

[0001] The present invention belongs to the field of missile water-entry buffering and load reduction, and relates to a missile high-speed water-entry telescopic deformation load reduction device. Background Art

[0002] A missile is an aircraft that carries a warhead, is propelled by its own power plant, is guided and controlled by a guidance system to fly along a flight path, and is directed at a target and destroys the target. The outstanding performance characteristics of missile weapons are long range, high precision, great power, and strong penetration ability. In military operations, relying on its precise strike ability, it can destroy high-value targets of the enemy. Sometimes, a few missiles are enough to change the entire battle situation.

[0003] When a missile strikes a target below the waterline, if the missile enters the water at a small angle, the missile will bounce repeatedly on the water surface, which is not conducive to hitting the target. To avoid the above situation, the missile generally enters the water at a large angle, and the water-entry angle is close to 90°. However, during the process of the missile entering the water at a large angle, a huge impact load will be generated at the moment when the missile head enters the water, causing the structure of the missile head to be overloaded and the internal structure to be damaged, which has an adverse impact on the strike effect. Therefore, a water-entry buffering and load reduction device is needed to avoid overload when the missile enters the water and protect the structure of the missile head.

[0004] If a device is designed to increase the sharpness of the missile head, the contact area between the missile head and water per unit time can be enlarged, and the water-entry time of the missile can be prolonged. Therefore, the impact load received by the missile head during the water-entry process will be greatly reduced. This device can effectively reduce the load, protect the structure of the missile head, maintain the original ballistic trajectory of the missile, and help to solve the deficiencies existing in the prior art. Summary of the Invention

[0005] The main object of the present invention is to provide a missile high-speed water-entry telescopic deformation load reduction device, which makes the device telescopic and deformed by high-pressure gas when the missile enters the water, increases the sharpness of the missile head; and the high-pressure gas released from the inside of the high-pressure gas cylinder also plays a buffering role when the missile enters the water, and effectively protects the structure of the missile head through buffering and load reduction.

[0006] The object of the present invention is achieved by the following technical solutions:

[0007] A missile high-speed water-entry telescopic deformation load reduction device disclosed by the present invention includes a rubber outer sleeve, a first-level telescopic device, a second-level telescopic device, a third-level telescopic device, a fourth-level telescopic device, a one-way valve, a high-pressure gas cylinder, a gas delivery pipeline, a first gas chamber, a second gas chamber, a third gas chamber, a fourth gas chamber, a first-level limit device, a second-level limit device, a third-level limit device, a fourth-level limit device, a base, and a fixing bolt.

[0008] The rubber outer sleeve is made of rubber material or other elastic materials. When undergoing telescopic deformation, the rubber outer sleeve is used to generate plastic deformation and can completely cover the outside of the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device. And the rubber outer sleeve is bonded to the base at the bottom by glue to ensure that it will not separate when the rubber outer sleeve generates plastic deformation.

[0009] The first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device are successively installed in cooperation with the base from the inside to the outside to form the outer contour of a pointed arch. There are a first air cavity, a second air cavity, a third air cavity, and a fourth air cavity left between the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, the fourth-stage telescopic device and the base. The contact parts between the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, the fourth-stage telescopic device and the base are filled with lubricating oil and closely matched to ensure the airtightness inside the first air cavity, the second air cavity, the third air cavity, and the fourth air cavity.

[0010] Corresponding first-stage limiting devices, second-stage limiting devices, third-stage limiting devices, and fourth-stage limiting devices are provided on the base to limit the moving distances at both ends of the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device. There are multiple cavities for installing high-pressure gas cylinders and one-way valves inside the base, and there is also a channel for installing gas transmission pipelines inside the base. There are multiple through holes for installing fixing bolts at the bottom of the base.

[0011] There are multiple high-pressure gas cylinders, and each high-pressure gas cylinder is installed inside one of the multiple cavities reserved inside the base, and a one-way valve is installed on each high-pressure gas cylinder. Each high-pressure gas cylinder can be connected to the first air cavity, the second air cavity, the third air cavity, and the fourth air cavity through a gas transmission pipeline. When the missile enters the water, high-pressure gas is released inside the high-pressure gas cylinders.

[0012] One end of the one-way valve is connected to the high-pressure gas cylinder, and the other end is connected to the gas transmission pipeline. The one-way valve and the high-pressure gas cylinder are jointly installed inside the cavity reserved inside the base.

[0013] There are multiple fixing bolts, and the bolts are symmetrically arranged. The fixing bolts are used to fix this device to the missile head.

[0014] It should be noted that the number of the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device, the number of the corresponding first air cavity, the second air cavity, the third air cavity, and the fourth air cavity, and the number of the first-stage limiting device, the second-stage limiting device, the third-stage limiting device, and the fourth-stage limiting device are preferably four, but do not have to be limited to four. That is, by adjusting the number of stages of the telescopic device and correspondingly configuring the same number of air cavities and the same number of limiting devices, it can adapt to the shape and size of the missile.

[0015] The working method of a missile high-speed water-entry telescopic deformation and load reduction device disclosed by the present invention is as follows:

[0016] The above-mentioned missile high-speed water-entry telescopic deformation and load reduction device is installed at the head position of the missile.

[0017] During the flight of the missile, the above-mentioned missile high-speed water-entry telescopic deformation and load reduction device is in a contracted state, and the gas inside the high-pressure gas cylinder is not released; there is no high-pressure gas inside the first air chamber, the second air chamber, the third air chamber, and the fourth air chamber; the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device are respectively at the lowest positions of the first-stage limit device, the second-stage limit device, the third-stage limit device, and the fourth-stage limit device; the rubber outer sleeve is closely attached to the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device to avoid other influences on the flight process of the missile.

[0018] When the missile approaches the waterline and is about to enter the water, the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device will be in an extended state, and the gas inside the high-pressure gas cylinder will be completely released. The high-pressure gas flows through the one-way valve and enters the first air chamber, the second air chamber, the third air chamber, and the fourth air chamber through the gas dredging pipeline. The first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device extend under the action of the high-pressure gas; restricted by the first-stage limit device, the second-stage limit device, the third-stage limit device, and the fourth-stage limit device, finally, the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device are stuck at the farthest positions that each telescopic device can extend to; the rubber outer sleeve is lifted by the first-stage telescopic device, the second-stage telescopic device, the third-stage telescopic device, and the fourth-stage telescopic device, and the sharpness increases. By increasing the sharpness of the missile head, the water-entry time of the missile is extended, the contact area between the missile head and water per unit time is enlarged, and thus the impact load received during the missile water-entry process is reduced; moreover, the high-pressure gas released inside the high-pressure gas cylinder can also play a buffering role when the missile enters the water, further reducing the load acting on the missile head, effectively protecting the missile head structure, and improving the strike effect of the missile.

[0019] Beneficial effects:

[0020] 1. The present invention discloses a missile high-speed water-entry telescopic deformation and load reduction device, which uses a multi-stage telescopic device to change the sharpness of the missile head, enlarges the contact area between the missile head and water per unit time, extends the water-entry time of the missile, and thereby reduces the impact load received during the missile water-entry process.

[0021] 2. The present invention discloses a missile high-speed water-entry telescopic deformation and load reduction device. The high-pressure gas released inside the high-pressure gas cylinder can play a buffering role when the missile enters the water, and can further reduce the impact load received during the missile water-entry process and protect the missile head structure.

[0022] 3. The present invention discloses a telescopic and deformable load-reducing device for a missile to enter water at high speed, which is in a contracted state during the flight of the missile and will be in an extended state when the missile approaches the water line and is about to enter the water, without causing other impacts on the flight process of the missile. Description of the Drawings

[0023] Figure 1 Schematic front view of the device before telescoping;

[0024] Figure 2 Three-dimensional view of the device;

[0025] Figure 3 Schematic front view of the device after telescoping;

[0026] Figure 4 Schematic diagram of the fixing method of the device;

[0027] Figure 5 Schematic diagram of the missile flight process;

[0028] Figure 6 Schematic diagram of the missile approaching the water line;

[0029] Wherein: 1 - rubber outer sleeve, 2 - first-stage telescopic device, 3 - second-stage telescopic device, 4 - third-stage telescopic device, 5 - fourth-stage telescopic device, 6 - one-way valve, 7 - high-pressure gas cylinder, 8 - gas transmission pipeline, 9 - first gas chamber, 10 - second gas chamber, 11 - third gas chamber, 12 - fourth gas chamber, 13 - first-stage limit device, 14 - second-stage limit device, 15 - third-stage limit device, 16 - fourth-stage limit device, 17 - base, 18 - fixing bolt. Detailed Embodiment

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Aiming at the problem that the head structure of the missile is damaged due to overload during the process of the missile hitting the hull below the water line when the missile enters the water, as Figure 1 shown, a telescopic and deformable load-reducing device for a missile to enter water at high speed disclosed in this embodiment includes a rubber outer sleeve 1, a first-stage telescopic device 2, a second-stage telescopic device 3, a third-stage telescopic device 4, a fourth-stage telescopic device 5, a one-way valve 6, a high-pressure gas cylinder 7, a gas transmission pipeline 8, a first gas chamber 9, a second gas chamber 10, a third gas chamber 11, a fourth gas chamber 12, a first-stage limit device 13, a second-stage limit device 14, a third-stage limit device 15, a fourth-stage limit device 16, a base 17, and a fixing bolt 18.

[0032] Figure 2 This is the three-dimensional view of the device. As shown in the figure, the device includes four-stage telescopic devices, and the outside of the device is covered with a rubber outer sleeve 1.

[0033] As Figure 3 shown, the device changes the sharpness of the missile head through the telescopic deformation of the four-stage telescopic device to reduce the impact load during the missile's entry into the water; after the device undergoes telescopic deformation, the high-pressure gas released inside the high-pressure gas cylinder 7 can play a good buffering role when the missile enters the water, and can further reduce the impact load during the missile's entry into the water. Therefore, when the missile strikes a target below the waterline, the device can help the missile enter the water safely and reliably, protect the head structure, make the damage effect of the missile more obvious, and cause greater damage.

[0034] The rubber outer sleeve 1 is made of rubber material or other elastic materials. Rubber has good elasticity and airtightness, and is prone to plastic deformation; when the first-stage telescopic device 2, the second-stage telescopic device 3, and the third-stage telescopic device 4 undergo telescopic deformation, the rubber outer sleeve 1 can undergo plastic deformation and can completely cover the outside; and the rubber outer sleeve 1 is bonded to the base 17 with glue at the bottom to ensure that it will not separate when the rubber outer sleeve undergoes plastic deformation.

[0035] The first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5 are sequentially installed in cooperation with the base 17 as Figure 1 shown. There are a first air chamber 9, a second air chamber 10, a third air chamber 11, and a fourth air chamber 12 left inside the base 17. The contact parts between the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, the fourth-stage telescopic device 5 and the base 17 are filled with lubricating oil and closely matched. On the one hand, it can ensure the airtightness of the first air chamber 9, the second air chamber 10, the third air chamber 11, and the fourth air chamber 12; on the other hand, it can also reduce the friction generated during the telescopic movement of the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5.

[0036] The base 17 is provided with a first-stage limit device 13, a second-stage limit device 14, a third-stage limit device 15, and a fourth-stage limit device 16 to limit the moving distance at both ends of the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5; there are two cavities for installing the high-pressure gas cylinder 7 and the one-way valve 6 inside the base 17, and there is also a channel for installing the gas transmission pipeline 8 inside the base 17; there is a through hole for installing the fixing bolt 18 left at the bottom of the base 17.

[0037] There are two high-pressure gas cylinders 7 in total, which are respectively installed in the two cavities reserved inside the base 17, and one-way valves 6 are installed on both high-pressure gas cylinders 7; the high-pressure gas cylinder 7 is connected to the first air chamber 9, the second air chamber 10, the third air chamber 11, and the fourth air chamber 12 through the gas transmission pipeline 8. The high-pressure gas released inside the high-pressure gas cylinder 7 can play a good buffering role when the missile enters the water, and can further reduce the impact load during the missile's entry into the water.

[0038] One end of the one-way valve 6 is connected to the high-pressure gas cylinder 7, and the other end is connected to the gas delivery pipeline 8. The one-way valve 6 and the high-pressure gas cylinder 7 are placed together in the cavity reserved inside the base 17. The one-way valve 6 can ensure that the gas inside the high-pressure gas cylinder 7 can only flow unidirectionally.

[0039] The fixing bolts 18 are used to fix the device. As Figure 4 shown, the device is fixed above the missile head through a plurality of fixing bolts 18.

[0040] A working method of a missile high-speed water-entry telescopic deformation load-reducing device disclosed in this embodiment is as follows:

[0041] As Figure 5 shown, during the flight of the missile, the device is in a contracted state, and the gas inside the high-pressure gas cylinder 7 is not released; there is no high-pressure gas inside the first air chamber 9, the second air chamber 10, the third air chamber 11, and the fourth air chamber 12; the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5 are respectively at the lowest positions of the first-stage limiting device 13, the second-stage limiting device 14, the third-stage limiting device 15, and the fourth-stage limiting device 16; the rubber outer sleeve 1 is closely attached to the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5.

[0042] As Figure 6 shown, when the missile approaches the water line and is about to enter the water, the device will be in an extended state, and the gas inside the high-pressure gas cylinder 7 will be completely released. The high-pressure gas flows through the one-way valve 6 and enters the first air chamber 9, the second air chamber 10, the third air chamber 11, and the fourth air chamber 12 through the gas dredging pipeline. The first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5 extend under the action of the high-pressure gas; restricted by the first-stage limiting device 13, the second-stage limiting device 14, the third-stage limiting device 15, and the fourth-stage limiting device 16, finally, the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 16 are stuck at the farthest positions they can extend to; the rubber outer sleeve 1 is lifted by the first-stage telescopic device 2, the second-stage telescopic device 3, the third-stage telescopic device 4, and the fourth-stage telescopic device 5, and the sharpness increases. By increasing the sharpness of the missile head, the water-entry time of the missile can be extended, the contact area between the missile head and water per unit time can be enlarged, and thus the impact load received during its water-entry process can be reduced; and the high-pressure gas released inside the high-pressure gas cylinder 7 can also play a buffering role when the missile enters the water, further reducing the load acting on the missile head.

[0043] The device is in a contracted state during the flight of the missile and will be in an extended state when the missile approaches the water line and is about to enter the water, which will not have other impacts on the flight process of the missile and can also reduce the impact on the ballistic stability during the water-entry process. The device can effectively reduce the impact load received by the missile head and play a protective role for the missile head.

[0044] The above are only the preferred embodiments of the present invention. However, when implemented, it is not limited by the above embodiments. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A telescopic deformation and load reduction device for a missile entering water at high speed, characterized in that: It includes a rubber outer jacket (1), a first-stage telescopic device (2), a second-stage telescopic device (3), a third-stage telescopic device (4), a fourth-stage telescopic device (5), a one-way valve (6), a high-pressure gas cylinder (7), a gas transmission pipeline (8), a first gas chamber (9), a second gas chamber (10), a third gas chamber (11), a fourth gas chamber (12), a first-stage limit device (13), a second-stage limit device (14), a third-stage limit device (15), a fourth-stage limit device (16), a base (17), and fixing bolts (18); When undergoing telescopic deformation, the rubber outer jacket (1) is used to generate plastic deformation. The rubber outer jacket (1) can completely cover the outer sides of the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5); and the rubber outer jacket (1) is adhesively bonded to the base (17) at the bottom with glue to ensure that the rubber outer jacket (1) will not come off when generating plastic deformation; The first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5) are successively installed in cooperation with the base (17) from the inside to the outside to form the outer contour of a pointed arch; there are a first gas chamber (9), a second gas chamber (10), a third gas chamber (11), and a fourth gas chamber (12) left between the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), the fourth-stage telescopic device (5) and the base (17); the contact parts between the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), the fourth-stage telescopic device (5) and the base (17) are filled with lubricating oil and closely fitted to ensure the airtightness inside the first gas chamber (9), the second gas chamber (10), the third gas chamber (11), and the fourth gas chamber (12); Corresponding first-stage limit device (13), second-stage limit device (14), third-stage limit device (15), and fourth-stage limit device (16) are provided on the base (17) to limit the moving distances at both ends of the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5); there are multiple cavities for installing the high-pressure gas cylinder (7) and the one-way valve (6) inside the base (17), and there is also a channel for installing the gas transmission pipeline (8) inside the base (17); there are multiple through holes for installing the fixing bolts (18) left at the bottom of the base (17); There are multiple high-pressure gas cylinders (7), and each high-pressure gas cylinder (7) is installed inside multiple cavities reserved inside the base (17), and a one-way valve (6) is installed on each high-pressure gas cylinder (7); each high-pressure gas cylinder (7) can be connected to the first gas chamber (9), the second gas chamber (10), the third gas chamber (11), and the fourth gas chamber (12) through the gas transmission pipeline (8); when the missile enters the water, high-pressure gas is released inside the high-pressure gas cylinder (7); One end of the one-way valve (6) is connected to the high-pressure gas cylinder (7), and the other end is connected to the gas transmission pipeline (8). The one-way valve (6) and the high-pressure gas cylinder (7) are jointly installed inside the cavity reserved inside the base (17).

2. The telescopic deformation and load reduction device for a missile entering water at high speed according to claim 1, wherein: It is installed at the head position of the missile; During the flight of the missile, the missile high-speed water-entry telescopic deformation load-reducing device is in a contracted state, and the gas inside the high-pressure gas cylinder (7) is not released; there is no high-pressure gas inside the first air chamber (9), the second air chamber (10), the third air chamber (11), and the fourth air chamber (12); the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5) are respectively at the lowest positions of the first-stage limit device (13), the second-stage limit device (14), the third-stage limit device (15), and the fourth-stage limit device (16); the rubber outer sleeve (1) is in close contact with the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5). When the missile approaches the water line and is about to enter the water, the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5) will be in an extended state, and the gas inside the high-pressure gas cylinder (7) will be completely released. The high-pressure gas flows through the one-way valve (6) and enters the first air chamber (9), the second air chamber (10), the third air chamber (11), and the fourth air chamber (12) through the gas dredging pipeline. The first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5) extend under the action of the high-pressure gas; restricted by the first-stage limit device (13), the second-stage limit device (14), the third-stage limit device (15), and the fourth-stage limit device (16), the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5) are stuck at the farthest positions that each stage of the telescopic device can extend to; the rubber outer sleeve (1) is lifted by the first-stage telescopic device (2), the second-stage telescopic device (3), the third-stage telescopic device (4), and the fourth-stage telescopic device (5), and the sharpness increases; by increasing the sharpness of the missile head, the water-entry time of the missile is extended, the contact area between the missile head and water per unit time is enlarged, and thus the impact load received during the missile water-entry process is reduced; and the high-pressure gas released inside the high-pressure gas cylinder (7) can also play a buffering role when the missile enters the water, further reducing the load acting on the missile head, effectively protecting the missile head structure, and improving the strike effect of the missile.

3. A missile high-speed water-entry telescopic deformation load reduction device according to claim 1 or 2, characterized in that: The fixing bolts (18) include multiple ones, and the fixing bolts (18) are symmetrically arranged. The fixing bolts (18) are used to fix this device to the missile head.

4. A missile high-speed water-entry telescopic deformation load-reducing device according to claim 1 or 2, characterized in that: The rubber outer sleeve (1) is made of rubber material or other elastic materials.

5. A telescopic deformation and load reduction device for a missile entering water at high speed according to claim 1 or 2, characterized in that: By adjusting the number of stages of the telescopic device and correspondingly configuring the same number of air chambers and the same number of limit devices, it can adapt to the shape and size of the missile.

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