Net catching bomb, launching device for net catching bomb and net unfolding method of launching device

Abstract

The invention relates to a net catching bomb, a launching device for the net catching bomb and a net unfolding method of the launching device. The catching net bomb comprises a shell assembly and a catching net. The shell assembly is a hollow cylinder and comprises a side wall composed of a plurality of petal shells and end covers located at the two ends, and guide blocks and connecting blocks are arranged in the centers of the petal shells. Protrusions matched with the end covers are arranged at the two ends of the petal shell, each end cover is in a cup cover shape with one sealed end and one open end, and grooves matched with the protrusions at the two ends of the petal shell are formed in the side walls of the end covers. The catching net comprises a catching net body and extension lines, the catching net body is a polygonal catching net body when unfolded, the number of the extension lines is multiple, and the vertex angle of the catching net body is connected with the petal shell through the extension line connecting blocks; the petal shells, the vertex angles of the catching nets and the extension lines have the same number and are in one-to-one correspondence; after the guide blocks operate along the preset rotating track and are separated, the petal shells are scattered under the action of centrifugal force, and therefore the catching net is driven to be unfolded. The catching net and the launching device are small in size and easy to operate.

Description

Technical Field

[0001] This invention relates to the field of riot control weapons technology, and more specifically, to a net-catching projectile, a launching device for the net-catching projectile, and a method for deploying the net. Background Technology

[0002] Currently, the phenomenon of civilian drones flying illegally or erratically occurs frequently. Using capture nets to intercept drones is a relatively ideal countermeasure. Capture nets can restrict the movement of drones without causing significant damage to the drone's fuselage, facilitating subsequent investigation and evidence collection.

[0003] Currently, most capture nets are launched and deployed by simultaneously firing multiple launch tubes at a certain angle, with the net unfolding due to the movement of the launch tubes. The extent of deployment relies heavily on the consistency of the launch of the launch tubes; if any launch tube is interfered with, the net cannot fully unfold. This structure results in a large and complex launching device, making it inconvenient to use and maintain, and difficult to install on small to medium-sized UAVs with limited space. For example, Chinese patent CN119803201A, which uses a front-loading capture net projectile with multiple launch tubes and a conical launch tube base, is large in size, placing certain requirements on the size and installation space of the UAV it carries, and is also complex to operate.

[0004] Therefore, there is an urgent need to develop a smaller-sized net-catching projectile and net-catching projectile launching device that is easy to mount on drones, which can reduce the size of the net-catching launching device and is simple to operate. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the capture net launching device is large in size and complicated to operate.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, a netting projectile is provided, comprising: a shell assembly, which is a hollow cylinder, including a side wall composed of multiple petal shells and end caps located at both ends, wherein each petal shell has a guide block facing outward of the cylinder and a connecting block facing inward of the cylinder at its center, the guide block and the connecting block being fixedly connected to the center of the petal shell; both ends of the petal shell are provided with protrusions adapted to the end caps, the end caps being cup-shaped with one end closed and the other end open, and the side wall of the end caps being provided with grooves that match the protrusions at both ends of the petal shells; The capture net consists of a capture net and extension lines. When unfolded, the capture net is a polygonal capture net with multiple extension lines. The connecting block has a groove. The top corners of the capture net are connected to the petal shells through the grooves on the connecting block via the extension lines. The number of petal shells, the number of top corners of the capture net, and the number of extension lines are the same and correspond one-to-one. The guide block is cylindrical and its axis is perpendicular to the petal shells. After the guide block rotates along a predetermined rotation track and disengages, it spreads out under the action of centrifugal force through the petal shells, thereby driving the capture net to unfold.

[0007] According to embodiments of the present invention, the number of petal shells, the number of apex corners of the trapping net, and the number of extension lines are the same, and can be 3 to 6. Preferably, the number of petal shells, the number of apex corners of the trapping net, and the number of extension lines can all be 5. The specific number depends on actual needs and is not limited thereto.

[0008] According to an embodiment of the present invention, a through hole may be provided at the center of the petal shell, and the guide block and the connecting block are installed in the middle of the petal shell by screws passing through the through hole.

[0009] According to an embodiment of the present invention, the guide block can be made of steel. The petal shell, end cap, and connecting block can be made of aluminum alloy. The material is determined according to actual needs and is not specifically limited thereto.

[0010] According to another aspect of the present invention, a launching device for a net-catching projectile is provided, comprising: a launching tube assembly for receiving the net-catching projectile as described above to be launched, the launching tube assembly including a launching tube body and a piston, the launching tube body being a hollow cylinder having a front end along the launching direction and a rear end corresponding to the front end, the front end of the launching tube having a helical groove corresponding to a guide block, wherein the diameter of the guide block is slightly smaller than the width of the helical groove, and the guide block is slidable in the helical groove of the launching tube; wherein the net-catching projectile is installed in the launching tube near the front end, and the piston is installed in the launching tube adjacent to the net-catching projectile, the piston being disposed in the launching tube body, the piston being a cup shape with one end sealed and the other end open, the open end of the piston facing a pressure assembly; and a pressure chamber assembly, the pressure chamber assembly being installed at the rear end of the launching tube body, including a high-pressure chamber, a metal diaphragm, and a high-pressure chamber end cap. The system includes an ignition device installed on the high-pressure chamber cover, wherein the high-pressure chamber contains the propellant, and a metal diaphragm is located within the high-pressure chamber, forming a sealed space with the high-pressure chamber cover; a support assembly, comprising a cylinder clamp, a launcher, a launcher base, and a support rod base; the cylinder clamp is fastened to the outer surface of the launch cylinder and connected to the launcher; the launcher is fixed to the rear end of the launch cylinder via a connecting ring; the launcher base is rotatably connected to the rear end of the launcher; the support rod has two ends, one end of which is rotatably connected to the support rod base, and the support rod base is connected to the front end of the launcher; wherein the piston slides smoothly back and forth with the launch cylinder; when the high-pressure chamber of the pressure chamber assembly pushes the piston to slide rapidly towards the front end of the launch cylinder assembly, the guide block rotates along the spiral groove towards the front end and disengages from the launch cylinder assembly; the petal shell disperses under the action of centrifugal force, thereby driving the capture net to spread out.

[0011] According to an embodiment of the present invention, the pressure chamber assembly and the launch tube body can be threadedly connected.

[0012] According to an embodiment of the present invention, the ignition device is an electric ignition head, which can be threadedly connected to the end cap of the high-voltage chamber.

[0013] According to another aspect of the present invention, a method for deploying a net-catching projectile and a launching device for the projectile is provided, based on the aforementioned net-catching projectile and launching device for the projectile, comprising the following steps: adjusting the support assembly so that the launching tube assembly is axially aligned with a predetermined launching direction; the pressure chamber assembly of the launching device has an electric igniter and propellant in a high-pressure chamber; when the electric igniter activates the propellant in the pressure chamber to explode, the propellant gas formed in the confined space pushes the piston and the net-catching projectile toward the front end of the launching tube; during the process of the net-catching projectile flying out of the launching tube, the guide block on the surface of the shell assembly is restricted by the spiral groove of the launching tube, causing the net-catching projectile to spin around the launching direction axis; after the net-catching projectile flies out of the launching tube, under the action of centrifugal force, since there is no longer the restriction of the launching tube, the petal shell flies in all directions, and the end cap falls off naturally without support, thereby the petal shell drives the net-catching projectile to unfold and complete the net-deploying action.

[0014] Compared with the prior art, the technical solution provided by the embodiments of the present invention can achieve at least the following beneficial effects:

[0015] The net-catching projectile of this invention features a simple structure, rapid deployment, and lightweight portability. When used with a launching device, the guide block on the projectile is aligned with the spiral groove on the launching tube and inserted. The support rod and bracket base are adjusted to achieve the required launching angle for the test. A certain amount of black powder is poured into the high-pressure chamber where the metal diaphragm is bonded, and the electric igniter is installed into the end cap of the high-pressure chamber. A certain amount of silicone rubber is applied to the threads to seal the chamber, and the ignition device is used to ignite the electric igniter, thus launching the net-catching projectile. The launching speed of the projectile can be changed by adjusting the amount of black powder.

[0016] The net-catching projectile and launching device for the net-catching projectile according to the present invention are small in size and easy to operate. After the launching device for the net-catching projectile is ignited, the thrust generated by the pressure pushes the piston, causing the net-catching projectile to move forward. At this time, the guide block, under the action of the spiral groove, drives the net-catching projectile to spin along the axis of the launching direction. After the net-catching projectile flies out of the launching tube, without the constraint of the side wall of the launching tube, the petal shell diverges in all directions under the action of centrifugal force. Since the four corners of the net are connected to the petal shell, the net will unfold due to the divergent motion of the petal shell, thereby realizing the unfolding action of the net. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0018] Figure 1 and Figure 2 This is a schematic diagram illustrating the net-catching projectile and its deployment process according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram illustrating a launching device for a net-catching projectile according to an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 A cross-sectional view of the launch tube assembly;

[0021] Figure 5 and Figure 6 This is a schematic diagram showing the usage state of a launching device for a net-catching projectile according to an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0024] Figure 1 and Figure 2 This is a schematic diagram illustrating the net-catching projectile and its deployment process according to an embodiment of the present invention.

[0025] like Figure 1 and Figure 2 As shown, the net-catching projectile 1 includes: a shell assembly and a net 11.

[0026] The housing assembly is a hollow cylinder, including side walls composed of multiple petal-shaped housings 14 and end caps 15 located at both ends. Each petal-shaped housing 14 has a guide block 12 facing outward from the cylinder and a connecting block 13 facing inward from the cylinder at its center. The guide block 12 and the connecting block 13 are fixedly connected to the center of the petal-shaped housing 14. Both ends of the petal-shaped housing 14 have protrusions that fit the end caps 15. The end caps 15 are cup-shaped with one end closed and the other end open. The side walls of the end caps 15 have grooves that match the protrusions at both ends of the petal-shaped housing 14.

[0027] The capture net 11 includes a capture net 11 and extension lines. When the capture net 11 is unfolded, it is a polygonal capture net 11. There are multiple extension lines. The connecting block 13 is provided with a groove. The top corner of the capture net 11 is connected to the petal shell 14 through the extension lines and the groove on the connecting block 13. The number of petal shells 14, the number of top corners of the capture net 11, and the number of extension lines are the same and correspond one-to-one.

[0028] The guide block 12 is cylindrical and its axis is perpendicular to the petal shell 14. After the guide block 12 moves along the predetermined rotation track and disengages, it spreads out through the petal shell 14 under the action of centrifugal force, thereby driving the capture net 11 to spread out.

[0029] According to one or more embodiments of the present invention, the number of petal shells 14, the number of apex corners of the capturing net 11, and the number of extension lines are the same, ranging from 3 to 6. Preferably, the number of petal shells 14, the number of apex corners of the capturing net 11, and the number of extension lines are all 5. The specific number depends on actual needs and is not limited thereto.

[0030] According to one or more embodiments of the present invention, a through hole is provided in the center of the petal housing 14, and the guide block 12 and the connecting block 13 are installed in the middle of the petal housing 14 by screws 16 passing through the through hole.

[0031] According to one or more embodiments of the present invention, the guide block 12 is made of steel. The petal shell 14, the end cap 15, and the connecting block 13 are made of aluminum alloy. The materials are determined according to actual needs and are not specifically limited thereto.

[0032] The net-catching projectile 1 and the launching device for the net-catching projectile 1 according to the present invention are small in size and easy to operate. After the launching device for the net-catching projectile 1 is ignited, the thrust generated by the pressure pushes the piston 23, causing the net-catching projectile 1 to move forward. At this time, the guide block 12, under the action of the spiral groove 22, drives the net-catching projectile 1 to spin along the axis of the launching direction. When the net-catching projectile 1 flies out of the launching tube body 21, without the constraint of the side wall of the launching tube body 21, the petal shell 14 diverges in all directions under the action of centrifugal force. Since the four corners of the capturing net 11 are connected to the petal shell 14, the capturing net 11 will unfold due to the divergent motion of the petal shell 14, thereby realizing the unfolding action of the capturing net 11.

[0033] Figure 3 This is a schematic diagram illustrating a launching device for a net-catching projectile according to an embodiment of the present invention; Figure 4 yes Figure 3 Cross-sectional view of the launch tube assembly.

[0034] like Figure 3 and Figure 4 As shown, the launching device for the net-catching projectile 1 includes: a launching tube assembly 2, a pressure chamber assembly 3, and a support assembly 4.

[0035] The launch tube assembly 2 is used to accommodate the net-catching projectile 1 to be launched as described above. The launch tube assembly 2 includes a launch tube body 21 and a piston 23. The launch tube body 21 is a hollow cylinder with a front end along the launch direction and a rear end corresponding to the front end. The front end of the launch tube has a spiral groove 22 corresponding to the guide block 12. The diameter of the guide block 12 is slightly smaller than the width of the spiral groove 22, and the guide block 12 can slide in the spiral groove 22 of the launch tube. The net-catching projectile 1 is installed in the launch tube near the front end. The piston 23 is installed in the launch tube next to the net-catching projectile 1. The piston 23 is located in the launch tube body 21. The piston 23 is a cup shape with one end sealed and the other end open. The open end of the piston 23 faces the pressure assembly.

[0036] The pressure chamber assembly 3 is installed at the rear end of the launch tube body 21 and includes a high-pressure chamber 31, a metal diaphragm 32, a high-pressure chamber 31 end cap 15, and an ignition device installed on the high-pressure chamber 31 end cap. The high-pressure chamber 31 contains the propellant, and the metal diaphragm 32 is located inside the high-pressure chamber 31, forming a sealed space with the high-pressure chamber 31 end cap.

[0037] Figure 5 and Figure 6 This is a schematic diagram showing the usage state of a launching device for a net-catching projectile according to an embodiment of the present invention.

[0038] like Figure 5 and Figure 6 As shown, the support assembly 4 includes a cylinder clamp 41, a launcher 42, a launcher base 44, and a support rod base 45; the cylinder clamp 41 is fastened to the outer surface of the launcher cylinder 21 and connected to the launcher 42, the launcher 42 is fixed to the rear end of the launcher cylinder by a connecting ring, and the launcher base 44 is rotatably connected to the rear end of the launcher 42; the support rod 43 has two ends, one end of which is rotatably connected to the support rod base 45, and the support rod base 45 is connected to the front end of the launcher 42.

[0039] In this process, the piston 23 slides smoothly back and forth with the launch tube. When the piston 23 is pushed to slide rapidly towards the front end of the launch tube assembly 2 by the high pressure chamber 31 of the pressure chamber assembly 3, the guide block 12 rotates along the spiral groove 22 and moves towards the front end and separates from the launch tube assembly 2. Then, the petal shell 14 disperses under the action of centrifugal force, thereby driving the capture net 11 to spread out.

[0040] According to one or more embodiments of the present invention, the pressure chamber assembly 3 is threadedly connected to the launch tube body 21.

[0041] According to one or more embodiments of the present invention, the ignition device is an electric ignition head 34, which is threadedly connected to the end cap 15 of the high-voltage chamber 31.

[0042] The net-catching projectile 1 of this invention features a simple structure, rapid deployment, and lightweight portability. When used with a launching device for the net-catching projectile 1, the guide block 12 on the net-catching projectile 1 is aligned with the spiral groove 22 on the launching tube body 21 and inserted. The support rod 43 and the bracket base are adjusted to bring the launching tube body 21 to the required launching angle for the test. A certain amount of black powder is poured into the high-pressure chamber 31, where the metal diaphragm 32 is bonded. The electric igniter 34 is then inserted into the end cap 15 of the high-pressure chamber 31, and a certain amount of silicone rubber is applied to the threads to seal it. The electric igniter 34 is then ignited using an ignition device, thereby launching the net-catching projectile 1. The launching speed of the net-catching projectile 1 can be changed by adjusting the amount of black powder.

[0043] When in use, the method for deploying the net-catching projectile 1 and the launching device for the net-catching projectile 1 includes the following steps:

[0044] Adjust the support assembly 4 so that the launch tube assembly 2 is axially aligned with the predetermined launch direction;

[0045] The pressure chamber assembly 3 of the launching device has an electric igniter 34 and a propellant in a high-pressure chamber 31; when the electric igniter 34 is activated, the propellant in the pressure chamber explodes, and the gunpowder gas formed in the confined space pushes the piston 23 and the netting projectile 1 toward the front end of the launching tube.

[0046] As the net-catching projectile 1 flies out of the launch tube, the guide block 12 on the surface of the shell assembly is restricted by the spiral groove 22 of the launch tube, causing the net-catching projectile 1 to spin around the launch direction axis.

[0047] After the net-catching projectile 1 flies out of the launch tube, under the action of centrifugal force, since it is no longer restricted by the launch tube, the petal shell 14 flies in all directions, and the end cap 15 falls off naturally without support. Thus, the petal shell 14 drives the net-catching net 11 to unfold and complete the net-laying action.

[0048] The net-catching projectile 1 is a cylindrical structure with an internal cavity. The petal shell 14 has a fan-shaped cross-section. The four petal shells 14 are joined together to form the cylindrical sidewall of the shell assembly. The end cap 15 is fastened to both ends of the four joined petal shells 14 to form the internal cavity structure. A folded square net 11 is placed inside the cavity of the projectile. The guide block 12 is a cylindrical structure with an outer diameter slightly smaller than the width of the spiral groove 22. The guide block 12 is slidably connected to the spiral groove 22. The connecting block 13 has grooves on its surface to allow space for the extension line of the net. The petal shell 14 has mounting holes. The connecting screws 16 fix the guide block 12 and the connecting block 13 to the outer and inner sides of the petal shell 14 through the mounting holes, respectively. One corner of the net 11 is connected to the connecting block 13. The net-catching projectile 1 is coaxially arranged inside the launch tube body 21. The outer diameter of the net-catching projectile 1 is smaller than the inner diameter of the launch tube body 21. The net-catching projectile 1 is slidably connected inside the launch tube body 21. When the net-catching projectile 1 flies out of the launch tube body 21, the guide block 12 realizes the spin motion of the net-catching projectile 1 under the restriction of the spiral groove 22.

[0049] The launch tube assembly 2 has a cylindrical and hollow launch tube body 21. The launch tube body 21 has a front end along the launch direction and a corresponding rear end. The front end of the launch tube body 21 has four spiral grooves 22. The piston 23 has an axisymmetric structure and a "U"-shaped cross-section along the axial direction. The piston 23 is coaxially arranged inside the launch tube body 21 and is positioned by the first constraint step 17 inside the launch tube body 21. The outer diameter of the piston 23 body is smaller than the inner diameter of the launch tube body 21. The piston 23 is slidably connected inside the launch tube body 21. The outer surface of the piston 23 is provided with an annular groove for installing a rubber sealing ring 24.

[0050] The pressure chamber assembly 3 is installed at the rear end of the launch tube body 21 and includes a high-pressure chamber 31. The high-pressure chamber 31 is a cup-shaped cover with through holes in the side walls. The high-pressure chamber end cap 33 is threadedly connected to the rear end of the high-pressure chamber 31. A metal diaphragm 32 is bonded to the inner side wall of the high-pressure chamber 31 by applying epoxy adhesive, thereby forming a first chamber 5 for placing gunpowder together with the high-pressure chamber 31 and the high-pressure chamber end cap. Before the electric ignition head 34 is installed into the threaded hole of the high-pressure chamber end cap 33, silicone rubber is applied to the threads to seal the first chamber 5.

[0051] The front end of the pressure chamber assembly 3, together with the piston 23 and the launch tube 11, forms the second chamber 6. After the gunpowder placed in the first chamber 5 is ignited, the first chamber 5 and the second chamber 6 are connected due to the gas pressure. As a result, the piston 23 slides along the launch tube body 21 towards the front end under the action of gas pressure, thereby pushing the net projectile 1 out of the tube.

[0052] The bracket assembly 4 is installed at the rear end of the launch tube assembly 2. The tube clamp 41 is fastened to the outer surface of the launch tube body 21 and connected to the launch frame 42. One end of the support rod 43 is rotatably connected to the front end of the support rod base 45. By adjusting the angle between the support rod 43 and the launch frame 42, the launch angle of the launch tube body 21 can be adjusted. The base 44 is rotatably connected to the rear end of the launch frame 43.

[0053] This invention features a simple structure, rapid deployment, and lightweight portability. During launch, the guide block 12 on the net-catching projectile 1 is aligned with the spiral groove 22 on the launch tube body 21 and inserted. The support rod 43 and the bracket base 44 are adjusted to bring the launch tube body 21 to the required launch angle. A certain amount of black powder is poured into the high-pressure chamber 31, where the metal diaphragm 32 is bonded. The electric igniter 34 is then inserted into the high-pressure chamber end cap 33, and a certain amount of silicone rubber is applied to the threads to seal it. The electric igniter 34 is then ignited using an ignition device, thus launching the net-catching projectile 1. The launch velocity of the net-catching projectile can be changed by adjusting the amount of black powder.

[0054] The tube clamp 41 is divided into two semi-circular clamps, left and right. The two semi-circular clamps are connected into one piece by screws. The launch tube clamp is installed on the launch frame 42 by screws. The tube clamp 41 is fixed at the annular groove 19 on the outer surface of the launch tube body 21. The support rod 43 is connected to the support rod base 45 by pins. The base 44 is connected to the rear end of the launch frame 42 by pins.

[0055] The launch tube body 21 has a second constraint step 18. The high-pressure chamber 31 is screwed into the rear end of the launch tube body 21 by a thread and positioned by the second constraint step 18. The high-pressure chamber end cap 33 is screwed into the bottom of the high-pressure chamber 31 by a thread.

[0056] In use, black powder can be used as the propellant. After the black powder is ignited, the gas expands rapidly in the high-pressure chamber 31 with perforations on the side of the cup lid, with a volume of V1, forming a pressure of P1. After the gas expands, it is constrained by the pressure of the metal diaphragm 32 and enters the cavity of the second chamber 6 formed by the piston 23, the launch tube body 21 and the high-pressure chamber assembly 31, with a volume of V2. Since the amount of gas produced is constant, the pressure P2 formed by the gas in the cavity inside the tube is much smaller than P1. Among them, P1 / P2 = V2 / V1. The driving force generated by the pressure of P2 pushes the piston 23 to move the net-catching projectile 1 forward. At this time, the guide block 12 drives the net-catching projectile 1 to make a spin motion along the launch direction axis under the action of the spiral groove 22.

[0057] When the net-catching projectile 1 flies out of the launch tube 21, without the constraint of the side wall of the launch tube 21, the petal shell 14 diverges in all directions under the action of centrifugal force. Since the four corners of the net-catching projectile 11 are connected to the petal shell 14, the net-catching projectile 11 will unfold due to the divergent motion of the petal shell 14, thereby realizing the unfolding action of the net-catching projectile.

[0058] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A net-catching projectile, comprising: The housing assembly is a hollow cylinder, comprising sidewalls composed of multiple petal-shaped shells and end caps at both ends. Each petal-shaped shell has a guide block facing outwards from the cylinder and a connecting block facing inwards from the cylinder at its center. The guide block and the connecting block are fixedly connected to the center of the petal-shaped shell. Each petal-shaped shell has protrusions at both ends that fit the end caps. The end caps are cup-shaped with one end closed and the other end open. The sidewalls of the end caps have grooves that match the protrusions at both ends of the petal-shaped shells. A capture net, comprising a capture net and extension lines, wherein the capture net unfolds into a polygonal capture net, and there are multiple extension lines. A connecting block has grooves, wherein the apex corners of the capture net are connected to the petal-shaped shells via the extension lines through the grooves on the connecting block. The number of petal-shaped shells, the number of apex corners of the capture net, and the number of extension lines are the same and correspond one-to-one. The guide block is cylindrical and its axis is perpendicular to the petal shell. After the guide block rotates along a predetermined rotation track and detaches, it spreads out under the action of centrifugal force through the petal shell, thereby driving the capture net to spread out.

2. The netting projectile as described in claim 1, wherein, The number of petal shells, the number of apex corners of the capture net, and the number of extension lines are the same, ranging from 3 to 6.

3. The netting projectile as described in claim 2, wherein, The number of petal shells, the number of apex corners of the capture net, and the number of extension lines are all 5.

4. The netting projectile as described in claim 1, wherein, The petal shell has a through hole at its center, and the guide block and connecting block are installed in the middle of the petal shell by screws passing through the through hole.

5. The netting projectile as described in claim 1, wherein, The guide block is made of steel.

6. The netting projectile as described in claim 1, wherein, The petal shell, end cap, and connecting block are made of aluminum alloy.

7. A launching device for a net-catching projectile, comprising: A launch tube assembly for receiving a net-catching projectile as described in any one of claims 1-6 to be launched, the launch tube assembly comprising a launch tube body and a piston, the launch tube body being a hollow cylinder having a front end along the launch direction and a rear end corresponding to the front end, the front end of the launch tube having a spiral groove corresponding to the guide block, wherein the diameter of the guide block is slightly smaller than the width of the spiral groove, and the guide block is capable of sliding in the spiral groove of the launch tube; wherein the net-catching projectile is installed in the launch tube near the front end, and the piston is installed in the launch tube adjacent to the net-catching projectile, the piston being disposed in the launch tube body, the piston being a cup shape with one end sealed and the other end open, the open end of the piston being disposed towards the pressure assembly; A pressure chamber assembly is installed at the rear end of the launch tube body and includes a high-pressure chamber, a metal diaphragm, a high-pressure chamber end cap, and an ignition device installed on the high-pressure chamber end cap. The high-pressure chamber contains the propellant, and the metal diaphragm is located in the high-pressure chamber, forming a sealed space with the high-pressure chamber end cap. The support assembly includes a cylinder clamp, a launcher, a launcher base, and a support rod base. The cylinder clamp is fastened to the outer surface of the launch cylinder and connected to the launcher. The launcher is fixed to the rear end of the launch cylinder by a connecting ring. The launcher base is rotatably connected to the rear end of the launcher. The support rod has two ends, one end of which is rotatably connected to the support rod base, and the support rod base is connected to the front end of the launcher. The piston slides smoothly back and forth with the launch tube. When the piston is pushed to slide rapidly towards the front end of the launch tube assembly by the high pressure chamber of the pressure chamber assembly, the guide block rotates along the spiral groove and moves towards the front end and separates from the launch tube assembly. The petal shell disperses under the action of centrifugal force, thereby driving the capture net to spread out.

8. The launching device for a net-catching projectile as described in claim 7, wherein, The pressure chamber assembly is threadedly connected to the launch tube body.

9. The launching device for a net-catching projectile as described in claim 7, wherein, The ignition device is an electric ignition head, which is threadedly connected to the end cover of the high-voltage chamber.

10. A method for deploying a net-catching projectile and a launching device for the net-catching projectile, based on the launching device for the net-catching projectile as described in claim 7, comprising the following steps: Adjust the support assembly so that the launch tube assembly is axially aligned with the predetermined launch direction; The pressure chamber assembly of the launching device has an electric igniter and propellant inside a high-pressure chamber; when the electric igniter is activated, the propellant in the pressure chamber explodes, and the gunpowder gas formed in the confined space pushes the piston and the net projectile toward the front end of the launch tube. As the net-catching projectile flies out of the launch tube, the guide block on the surface of the shell assembly is restricted by the spiral groove of the launch tube, causing the net-catching projectile to spin around the launch direction axis. After the net-catching projectile flies out of the launch tube, under the action of centrifugal force, and since it is no longer restricted by the launch tube, the petal shell flies in all directions, and the end cap falls off naturally without support. Thus, the petal shell drives the net to unfold and complete the net-laying action.

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