Incident angle setting device and method for ultra-high-speed penetration

Abstract

The invention relates to an incident angle setting device and method for ultra-high-speed penetration. Comprising a laser collimation system, a laser generator and an angle measurement system. When the angle is set, the laser alignment system internally provided with the laser generator is assembled in the gun barrel, and laser emitted by the laser generator is parallel to the axis of the gun barrel through the laser alignment system; the angle measuring system comprises an annular supporting column, a transparent scale panel and a plane mirror, wherein the transparent scale panel and the plane mirror are arranged at the two ends of the annular supporting column in parallel. The transparent scale panel is provided with an incident light small hole for laser to pass through. When the angle is set, the plane mirror is located on the surface of the target body, incident laser passes through the small incident light hole and then is reflected to the transparent scale panel through the plane mirror, the target body is adjusted, and the incident angle of ultra-high-speed penetration is set. The device can be suitable for gun barrels with different inner diameters, and can accurately and quickly measure the angle of an ultra-high-speed penetration target body.

Description

Technical Field

[0001] The present invention belongs to the field of setting the incident angle in penetration tests, and particularly relates to a device and method for setting the incident angle for hypervelocity penetration. Background Art

[0002] High-speed kinetic energy weapons are one of the most effective weapons for attacking underground protection measures. The damage effect of kinetic energy weapons is closely related to the impact angle of the projectile. The penetration depth and crater size of projectiles with different impact angles are often different. Whether it is a penetration scale-down test or a penetration prototype test, the costs of these tests are often high. Currently, light gas guns or artillery are generally used for penetration tests in China. Before the test, only the approximate incident angle of the projectile can be estimated, and after the test, the incident angle of the projectile is measured by high-speed photography. On the one hand, this measurement method requires the use of a high-speed camera, which not only increases the cost of the test but also makes the test process cumbersome; on the other hand, since the projectile moves in space, and a single high-speed camera can often only photograph the incident angle of the projectile in a plane and cannot describe the incident angle of the projectile in space, this will bring errors to the test measurement. Summary of the Invention

[0003] The purpose of the present invention is to provide a device and method for setting the incident angle for hypervelocity penetration.

[0004] The technical solution for achieving the purpose of the present invention is: A device for setting the incident angle for hypervelocity penetration, comprising a laser collimation system, a laser generator, and an angle measurement system;

[0005] When setting the angle, the laser collimation system internally equipped with a laser generator is assembled in the gun barrel, and the laser emitted by the laser generator is made parallel to the axis of the gun barrel through the laser collimation system;

[0006] The angle measurement system includes an annular support column and a transparent scale panel and a plane mirror arranged in parallel at both ends of the annular support column. The transparent scale panel is provided with an incident light small hole for the laser to pass through; when setting the angle, the plane mirror is located on the surface of the target, and the incident laser passes through the incident light small hole and is reflected by the plane mirror onto the transparent scale panel, and the target is adjusted, and the incident angle for hypervelocity penetration is set through the scale of the transparent scale panel.

[0007] Further, the laser collimation system includes a circular tube body and a light output head. A base for fixing a laser generator is integrally formed inside the circular tube body. Two sets of light source balance holes are axially provided on the side wall of the circular tube body. Each set of light source balance holes includes three holes evenly arranged in the circumferential direction. Each light source balance hole is equipped with a balance screw. Each light source balance hole is a stepped hole. The smaller diameter section of the stepped hole is a threaded hole that matches the balance screw. The balance screw is used to make the laser emitted by the laser generator coincide with the axis of the gun barrel. After assembly, the nut of the balance screw is located in the larger diameter section of the stepped hole;

[0008] The light output head consists of two ends. The light output head is connected to the outlet end of the circular tube body through a rear end ring. A light output port is provided on the cylindrical section of the light output head away from the laser generator.

[0009] Further, limiting grooves are evenly arranged in the circumferential direction on the side wall of the rear end ring of the light output head. Limiting holes are provided at the positions of the circular tube body that cooperate with the limiting grooves. The circular tube body and the light output head are connected through limiting screws. After assembly, the nut of the limiting screw is located outside the circular tube body. The outer circle formed by multiple limiting screws is larger than the inner diameter of the gun barrel.

[0010] Further, different specifications of plugs are also included. The laser collimation system is coaxially arranged with the gun barrel through the plugs. After assembly, the laser collimation system is located outside the gun barrel.

[0011] Further, one end of the plug connected to the gun barrel is a muzzle insertion rod, and one end of the plug connected to the laser collimation system is an annular cylinder. A switch insertion rod is provided in the middle of the annular cylinder;

[0012] During assembly, the muzzle insertion rod is inserted into the gun barrel. The circular tube body of the laser collimation system is assembled inside the annular cylinder. The switch insertion rod is connected to the switch of the laser generator.

[0013] Further, the support column is telescopic and has two heights. The scales on the transparent scale panel are set in cooperation with the heights.

[0014] Further, the inside of the light output head is coated with light-absorbing material.

[0015] Further, the material of the circular tube body of the laser collimation system is metal, with an outer diameter of 18 - 50 mm and an inner diameter of 12 - 44 mm;

[0016] The distance between the two sets of light source balance holes is 125 - 170 mm. The diameter of the larger diameter section of each set of balance holes is 1.5 - 2 mm, and the diameter of the smaller diameter section is 0.8 - 1.2 mm;

[0017] The limiting holes are 5 - 10 mm away from the head of the laser collimation system. The limiting screws protrude 1 - 2 mm above the outer wall of the laser collimation system;

[0018] The diameter of the cylindrical section of the light-emitting head away from the laser generator is 5 - 10 mm, the diameter of the rear end ring matches the inner diameter of the cylindrical tube of the laser collimation system, and the diameter of the light-emitting port is 0.1 - 0.15 mm;

[0019] The transparent scale panel is placed parallel to the plane mirror and has the same size. The radius of both is 125 - 150 mm. The support column has lengths of 7.5 mm and 2.5 mm, and the aperture diameter of the incident light small hole is not more than 1 mm.

[0020] A method for calibrating the position of a hypervelocity penetration target based on the above device includes the following steps:

[0021] Step (1): Place the laser generator inside the laser collimation system, keep the whole device vertically upward, and the laser generator is closely attached to the base.

[0022] Step (2): Rotate the balance screws in sequence to initially fix the laser generator.

[0023] Step (3): Insert the light-emitting head into the laser collimation system until the rear half of the light-emitting head is completely immersed, and tighten the limit screw.

[0024] Step (4): Turn on the laser generator and adjust the two groups of balance screws until the laser emits from the light-emitting port.

[0025] Step (5): Assemble the laser collimation system and the gun barrel coaxially.

[0026] Step (6): Observe the incident laser point on the penetration target body and mark this point on the target body.

[0027] A method for setting the hypervelocity penetration incident angle based on the above device includes the following steps:

[0028] S1: Calibrate the position of the hypervelocity penetration target.

[0029] S2: Place the plane mirror of the angle measurement system on the surface of the target body.

[0030] S3: Make the incident laser pass through the incident light small hole.

[0031] S4: Swing the position of the target body, and set different target body angles, that is, the incident angles, through the transparent scale panel; fix the target body after setting at the predetermined angle.

[0032] Compared with the prior art, the remarkable advantages of the present invention are as follows:

[0033] (1) For a device for measuring the angle of a hypervelocity penetration target body proposed by the present invention, the innovation lies in that for normal penetration, the device can ensure that the laser emits parallel to the center of the gun barrel, and the path of the laser is the projectile launch path.

[0034] (2) A device for measuring the angle of a target penetrated by a hypervelocity projectile proposed according to the present invention is innovative in that for oblique penetration, the device can accurately control the three-dimensional tilt angle of the target before the test, facilitating the design of experimental schemes.

[0035] (3) The device can meet the measurement requirements of gun barrels with different diameters, get rid of the dependence on high-speed cameras, is easy to load and unload, has high measurement accuracy and speed, and can be applied to long-distance measurement. Description of the Drawings

[0036] Figure 1 Schematic diagram of the laser collimation system of the present invention;

[0037] Figure 2 Schematic diagram of the target angle measurement system of the present invention;

[0038] Figure 3 Top view of the target angle measurement system of the present invention;

[0039] Figure 4 Schematic diagram of the plug-in of the present invention;

[0040] Figure 5 Schematic diagram of the light output head of the present invention;

[0041] Figure 6 Schematic diagram of the light source balance hole and balance screw of the present invention;

[0042] Figure 7 Internal installation schematic diagram of the laser collimation system of the present invention;

[0043] Figure 8 Schematic diagram of the installation of the plug-in of the laser collimation system of the present invention;

[0044] Figure 9 Schematic diagram of the projectile vertically penetrating the target of the present invention;

[0045] Figure 10 Schematic diagram of the angle setting for the projectile obliquely penetrating the target of the present invention;

[0046] Figure 11 High-speed camera effect diagram of vertical penetration after using the device;

[0047] Figure 12 High-speed camera effect diagram of controlling 20° oblique penetration after using the device.

[0048] Description of the reference numerals:

[0049] 1 - Laser collimation system, 2 - Laser generator, 3 - Light output head, 4 - Base, 5 - Power switch, 6 - Light source balance hole, 7 - Balance screw, 8 - Limit hole, 9 - Limit screw, 10 - Light output port, 11 - Limit groove, 12 - Plug-in, 13 - Muzzle insertion rod, 14 - Switch insertion rod, 15 - Angle measurement system, 16 - Transparent scale panel, 17 - Plane mirror, 18 - Support column, 19 - Incident light small hole, 20 - Gun barrel, 21 - Target body. Specific embodiments

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0051] An angle measurement device for ultra-high-speed penetration of a target body includes a laser collimation system 1, a laser generator 2, a plug-in 12, and an angle measurement system 15. A power switch 5 is provided at the bottom of the laser emitter 2. The laser generator 2 is installed in the laser collimation system 1. The laser collimation system 1 includes a light source balance hole 6, a balance screw 7, a light output head 3, a base 4, a limit hole 8, and a limit screw 9. After the laser is emitted from the laser generator 2, the angle of the penetrated target is displayed through the angle measurement system 15. The angle measurement system 15 includes a transparent scale panel 16, a plane mirror 17, and a support column 18.

[0052] The laser collimation system 1 and the base 4 are an integral body. Among them, the base 4 is hollow and used to fix the laser generator 2, and its inner diameter is smaller than that of the laser generator 2.

[0053] The two groups of light source balance holes 6 are wider at the top and narrower at the bottom, and are respectively located at the head and tail of the laser generator 2. The 3 light source balance holes 6 in each group are located in the same plane and are 120° to each other. Precision threads are also engraved on the inner side of the through holes at the bottom. 6 balance screws 7 are used to fix and adjust the laser angle to ensure laser collimation.

[0054] The 3 limit holes 8 are located in the same plane and are 120° to each other, and are used to fix the light output head 3. Its inner diameter is larger than the rod part of the limit screw 9 and smaller than its top.

[0055] The laser collimation system 1 can be used alone. When its outer diameter does not match the inner diameter of the gun barrel, the plug-in 12 can be used to meet the requirements of different inner diameter gun barrels.

[0056] The plug-in 12 includes a muzzle insertion rod 13 and a switch insertion rod 14. The muzzle insertion rod 13 is used to insert into the gun barrel, and the switch insertion rod 14 is used to turn on the laser generator 2.

[0057] The light output head 3 includes a limit groove 11 and a light output port 10. The inside of the light output head 3 is coated with a light-absorbing material to prevent laser interference.

[0058] The support 18 in the angle measurement system 15 can be telescopic to meet different angle measurement requirements.

[0059] The transparent scale panel 16 consists of two parts of scales, solid lines and dashed lines. The solid line part corresponds to the angle measurement within 45°, and the dashed line part corresponds to the angle measurement from 45° to 85°. There is also an incident light small hole 19 on the transparent scale panel 16 for incident laser light.

[0060] Refer to Figures 1 - 6 , the main body of the laser collimation system 1 is a metal round tube, with an outer diameter of 18 - 50 mm, an inner diameter of 12 - 44 mm, the distance between two groups of light source balance holes 6 is 125 - 170 mm, the upper half diameter of each group of balance holes 6 is 1.5 - 2 mm and the lower half diameter is 0.8 - 1.2 mm, and the balance holes 6 are 120° to each other, as Figure 6 shown. The bottom support 4 is integrally formed with the laser collimation system 1, with a length of 5 - 10 mm. The limit hole 8 is 5 - 10 mm away from the head of the laser collimation system 1, and the limit screw protrudes 1 - 2 mm above the outer wall of the laser collimation system 1 to prevent the whole system from sliding into the gun chamber. The upper half diameter of the light output head 3 is 5 - 10 mm and the lower half diameter is slightly smaller than that of the laser collimation system 1, and the size of the light output port 10 is 0.1 - 0.15 mm to ensure the laser collimation effect. In addition, the light output head 3 can be disassembled to facilitate the replacement of the power supply of the laser generator 2. For the target body angle measurement system 15, the transparent scale panel 16 is placed parallel to the plane mirror 17 and has the same size, and their radii are both 125 - 150 mm. The scale lines on the surface of the transparent scale panel 16 are composed of solid lines, and the degrees increase sequentially from the inside to the outside. The incident light small hole 19 is located at the center of the transparent scale panel 16, and the opening diameter is not more than 1 mm.

[0061] Embodiment 1

[0062] A device for measuring the angle of a hyper - velocity penetrating target body. When it is not necessary to measure the penetration angle for simply penetrating a specified target position, it includes the following method steps:

[0063] Step 1: Place the laser generator 2 inside the laser collimation system 1, keep the whole device vertically upward, and the laser generator 2 is closely attached to the bottom support 4;

[0064] Step 2: Rotate all the balance screws 7 in sequence until the force is felt and stop rotating, initially fix the laser generator 2 to ensure that it will not slide;

[0065] Step 3: Insert the light output head 3 into the laser collimation system 1 until the rear half part of the light output head 3 is completely immersed, and tighten the limit screw 9;

[0066] Step 4: Turn on the power switch 5 of the laser generator 2, and adjust the two sets of balance screws 7 until the laser beam emits from the light outlet 10. The assembled and adjusted laser collimation system is as shown in Figure 1 shown;

[0067] Step 5: Insert the laser collimation system 1 into the gun barrel 20;

[0068] Step 6: At the same time, the incident laser spot can be observed on the penetration target body 21. The schematic diagram is as shown in Figure 7 shown;

[0069] Step 7: After marking this point on the target body, take out the laser collimation system 1 from the gun barrel and turn off the power;

[0070] Step 8: Start the penetration test.

[0071] Example 2

[0072] During the penetration test, projectiles are often launched using gun barrels with different inner diameters. To increase the applicability of this device, the device is designed with a plug-in 12. The inner diameter of the plug-in 12 is slightly larger than the outer diameter of the laser collimation system 1, and the wall thickness is 3 - 5 mm. The muzzle insertion rod 13 is slightly smaller than the inner diameter of the gun barrel.

[0073] Step 1: Place the laser generator 2 inside the laser collimation system 1, keep the whole device vertically upward, and the laser generator 2 is closely attached to the bottom support 4;

[0074] Step 2: Rotate all the balance screws 7 in sequence until the force is felt and then stop rotating. Initially fix the laser generator 2 to ensure that it does not slide;

[0075] Step 3: Insert the light emitting head 3 into the laser collimation system 1 until the rear half of the light emitting head 3 is completely immersed, and tighten the limit screw 9;

[0076] Step 4: Turn on the switch 5 of the laser generator 2, and adjust the two sets of balance screws 7 until the laser beam emits from the light outlet 10. The assembled and adjusted laser collimation system is as shown in Figure 1 shown;

[0077] Step 5: Insert the laser collimation system 1 into the plug-in 12, and insert the muzzle insertion rod 13 into the gun barrel 20;

[0078] Step 6: At the same time, the incident laser spot can be observed on the penetration target body 21. The schematic diagram is as shown in Figure 8 shown;

[0079] Step 7: After marking this point on the target body, press the laser collimation system 1 to turn off the power;

[0080] Step 8: The plug-in 12 and the laser collimation system 1;

[0081] Step 9: Start the penetration test.

[0082] Embodiment 3

[0083] In order to accurately measure the inclination angle of the launched projectile penetrating the target, the angle measurement system 15 of the present invention is used to measure the incident angle of the projectile. The steps to determine the target position are as follows, where the calibration and installation of the laser collimation system are the same as in Embodiment 1 or 2:

[0084] Step 1: Press the plane mirror 17 in the angle measurement system 15 tightly against the upper surface of the target;

[0085] Step 2: Let the incident laser pass through the incident light small hole 19;

[0086] Step 3: Read the angle value through the transparent scale panel 16. If it is a positive penetration, the laser cannot be observed on the scale panel, as Figure 9 shown; if it is an oblique penetration, the corresponding value can be read on the transparent scale panel 16, as Figure 10 shown.

[0087] Step 4: By swinging the position of the target 21 or the gun barrel 20, different target angles can be achieved;

[0088] Step 5: Fix the target and remove the laser collimation system 1;

[0089] Step 6: Start the penetration test.

Claims

1. An incident angle setting device for ultra-high-speed penetration, characterized in that, It includes a laser collimation system (1), a laser generator (2) and an angle measurement system (15); When setting the angle, the laser collimation system (1) with the laser generator (2) installed inside is assembled in the gun barrel, and through the laser collimation system (1), the laser emitted by the laser generator (2) is parallel to the axis of the gun barrel (20); The angle measurement system (15) includes an annular support column (18) and transparent scale panels (16) and plane mirrors (17) arranged in parallel at both ends of the annular support column (18). Incident light small holes (19) for the laser to pass through are provided on the transparent scale panels (16); when setting the angle, the plane mirror (17) is located on the surface of the target body. After the incident laser passes through the incident light small holes (19), it is reflected by the plane mirror (17) onto the transparent scale panel (16), and the target body is adjusted. Through the scale of the transparent scale panel (16), the incident angle of hypervelocity penetration is set.

2. The incident angle setting device according to claim 1, characterized in that, The laser collimation system (1) includes a circular tube main body and a light output head (3). A bottom bracket (4) for fixing the laser generator (2) integrally formed is provided inside the circular tube main body. Two groups of light source balance holes (6) are provided along the axial direction on the side wall of the circular tube main body. Each group of light source balance holes (6) includes three evenly arranged circumferentially. Each light source balance hole (6) is provided with a balance screw (7). Each light source balance hole is a stepped hole. The smaller diameter section of the stepped hole is a threaded hole for cooperating with the balance screw (7). Through the balance screw (7), the laser emitted by the laser generator (2) coincides with the axis of the gun barrel, and after the balance screw is assembled, the nut of the balance screw (7) is located in the larger diameter section of the stepped hole; The light output head (3) consists of two ends. The light output head (3) is connected to the outlet end of the circular tube main body through the rear end ring. A light output port (10) is provided on the cylindrical section of the light output head (3) far from the laser generator.

3. The incident angle setting device according to claim 2, wherein Limit grooves (11) are evenly arranged circumferentially on the side wall of the rear end ring of the light output head (3). Limit holes (8) are provided at the positions where the circular tube main body cooperates with the limit grooves (11). The circular tube main body and the light output head (3) are connected through limit screws (9). After assembly, the nut of the limit screw (9) is located outside the circular tube main body. The outer circle formed by multiple limit screws (9) is larger than the inner diameter of the gun barrel.

4. The incident angle setting device according to claim 3, wherein It also includes plugs (12) of different specifications. The laser collimation system (1) is coaxially arranged with the gun barrel through the plugs (12), and after assembly, the laser collimation system (1) is located outside the gun barrel.

5. The incident angle setting device according to claim 4, characterized in that, One end of the plug (12) connected to the gun barrel is a muzzle plug rod (13), and one end of the plug (12) connected to the laser collimation system (1) is an annular cylinder, and a switch plug rod (14) is provided in the middle of the annular cylinder; During assembly, the muzzle plug rod (13) is inserted into the gun barrel, the circular tube main body of the laser collimation system (1) is assembled in the annular cylinder, and the switch plug rod (14) is connected to the switch of the laser generator (2).

6. The incident angle setting device according to claim 5, characterized in that, The support column (18) is telescopic and has two heights, and the scale on the transparent scale panel (16) is set in cooperation with the height.

7. The incident angle setting device according to claim 6, characterized in that, The inside of the light output head (3) is coated with light-absorbing material.

8. The incident angle setting device according to claim 7, wherein The material of the circular tube main body of the laser collimation system (1) is metal, with an outer diameter of 18 - 50 mm and an inner diameter of 12 - 44 mm; The distance between the two sets of light source balance holes (6) is 125 - 170 mm. The diameter of the larger section of each balance hole (6) is 1.5 - 2 mm, and the diameter of the smaller section is 0.8 - 1.2 mm; The limit hole (8) is 5 - 10 mm away from the head of the laser collimation system (1), and the limit screw (9) protrudes 1 - 2 mm above the outer wall of the laser collimation system; The diameter of the cylindrical section of the light output head (3) away from the laser generator is 5 - 10 mm. The diameter of the rear end ring is matched with the inner diameter of the cylindrical tube of the laser collimation system, and the diameter of the light output port (10) is 0.1 - 0.15 mm; The transparent scale panel (16) is placed parallel to the plane mirror (17) and has the same size. The radius of both is 125 - 150 mm. The support column (18) has lengths of 7.5 mm and 2.5 mm, and the opening diameter of the incident light small hole (19) is not more than 1 mm.

9. A method for calibrating the position of a hypervelocity penetration target by using the device according to any one of claims 1-8, characterized in that, It includes the following steps: Step (1): Place the laser generator (2) inside the laser collimation system (1), keep the whole device vertically upward, and the laser generator (2) is closely attached to the bottom support (4); Step (2): Rotate the balance screws (7) in sequence to initially fix the laser generator (2); Step (3): Insert the light output head (3) into the laser collimation system (1) until the rear half of the light output head (3) is completely immersed, and tighten the limit screw (9); Step (4): Turn on the laser generator (2), and adjust the two sets of balance screws (7) until the laser emits from the light output port (10); Step (5): Assemble the laser collimation system (1) and the gun barrel coaxially; Step (6): Observe the incident laser spot on the penetration target (21) and mark this point on the target.

10. A method for setting the incident angle of ultra-high-speed penetration based on the device according to any one of claims 1-8, characterized in that, It includes the following steps: S1: Calibrate the position of the hypervelocity penetration target; S2: Set the plane mirror (17) of the angle measurement system (15) on the surface of the target; S3: Make the incident laser pass through the incident light small hole (19); S4: Swing the position of the target (21), and set different target angles, that is, the incident angles, through the transparent scale panel (16); Fix the target after setting at the predetermined angle.

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