Water entry launching test device

Abstract

The invention belongs to the technical field of water entry dynamics, and particularly relates to a water entry launching test device. The invention provides a water entry launching test device which comprises a rack, a launching assembly, an angle adjusting support and a connecting assembly. A water tank is arranged at the bottom of the rack; the launching assembly faces the water tank and is used for loading projectiles; the angle adjusting support is arranged at the top of the rack and comprises a first supporting rod, a second supporting rod and an arc-shaped piece, wherein the first supporting rod and the second supporting rod intersect with each other, and the arc-shaped piece is connected between the first supporting rod and the second supporting rod. The connecting assembly is connected with the launching assembly and comprises a connecting rod, one end of the connecting rod is in pivot connection with the second supporting rod, the connecting point of the connecting rod and the second supporting rod coincides with the circle center of the arc-shaped piece, and the other end of the connecting rod can be connected with any position of the arc-shaped piece in the circumferential direction so that the launching angle of the projectile can be adjusted. By using the water entry launch test device in the technical scheme, the multi-angle water entry test of the projectile can be realized, and more effective technical support multi-angles are provided for scientific research.

Description

Technical Field

[0001] The present application belongs to the field of water entry dynamics technology, and specifically relates to a water entry launch test device. Background Art

[0002] The cross-media water entry problem is widely present in the fields of aerospace, shipbuilding and marine engineering. For example, this scientific problem is involved in the processes of rocket booster recovery into water, air-dropped torpedo entry into water, and bow slam entry into water. The cross-media water entry process must cross the gas-liquid interface, so it involves multiphase and multi-interface evolution, and has the characteristics of instantaneity, strong nonlinearity, and strong turbulence. Traditional theoretical research methods are difficult to establish a complete mathematical model to describe this complex physical process, and numerical simulation methods often become the key technical path for studying cross-media water entry problems. However, numerical simulation methods have deficiencies such as grid dependence and numerical dissipation, and the results obtained are uncertain. In view of this, water entry tests have become an irreplaceable technical means to study water entry dynamics problems. The experimental method can not only better capture the cavitation evolution and detailed flow field state of the water entry process, but also repeat the test many times to ensure that the test results are accurate and reliable, which is helpful for the study of water entry dynamics mechanism.

[0003] In related technologies, water entry test devices usually use a free fall method to study the flow field evolution characteristics such as splashing and cavitation during the vertical entry of a structure into water, or use a water entry test device to implement a small-angle water entry test. The adjustment range of the water entry angle is limited and cannot provide more effective technical support for scientific research. Summary of the invention

[0004] The purpose of this application is to provide a water launch test device that can meet the multi-angle water entry test of projectiles and provide more effective technical support for scientific research. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the present application provides a water launch test device, comprising:

[0006] A frame, wherein a water tank is disposed at the bottom of the frame;

[0007] a launching assembly, disposed toward the water tank, the launching assembly being used to load projectiles;

[0008] An angle adjustment bracket is arranged on the top of the frame, and the angle adjustment bracket includes a first support rod and a second support rod arranged to intersect each other, and an arc-shaped member connected between the first support rod and the second support rod;

[0009] A connecting assembly is connected to the launching assembly, the connecting assembly includes a connecting rod, one end of the connecting rod is pivotally connected to the second support rod, the connection point between the connecting rod and the second support rod coincides with the center of the arc-shaped member, and the other end of the connecting rod can be connected to any position of the arc-shaped member along the circumference to make the launching angle of the projectile adjustable.

[0010] The water-entry launch test device in the present technical solution supports other components through a frame, maintains the launch assembly at a preset angle through an angle-adjusting bracket, and launches the projectile through the launch assembly. During use, one end of the connecting rod is pivotally connected to the second support rod, and the other end of the connecting rod and the arc-shaped member are fixed according to the position of the preset projection point, so that the connecting rod is stably connected to the angle-adjusting bracket. The launch assembly is mounted on the connecting assembly so that the projectile can be projected to the preset projection point. The water-entry launch test device can conveniently, quickly, and accurately adjust the water entry angle of the projectile using the angle-adjusting bracket, so that the projectile can enter the water vertically or obliquely, and can meet a variety of test requirements.

[0011] In addition, the water launch test device of the present application may also have the following additional technical features:

[0012] In some embodiments of the present application, the central angle of the arc-shaped member ranges from 30° to 150°.

[0013] In some embodiments of the present application, the arc-shaped member includes a plurality of arc-shaped segments, and the plurality of arc-shaped segments are arranged at intervals along the radial direction of the arc-shaped segments.

[0014] In some embodiments of the present application, the connecting assembly also includes a moving block and a clamp, the connecting rod has a guide groove arranged along its length direction, the moving block is movably connected to the guide groove, the clamp is connected to the moving block, and the clamp is used to clamp the launching assembly.

[0015] In some embodiments of the present application, the water entry launch test device also includes a power assembly, the launch assembly includes a loading compartment and a launch tube, the launch tube is connected to the connecting rod, the loading compartment has a receiving cavity for placing projectiles, one end of the launch tube is connected to the loading compartment and communicated with the receiving cavity, the other end of the launch tube faces the water tank, the power assembly is communicated with the receiving cavity, and is used to provide propulsion force for the projectile to launch the projectile from the loading compartment through the launch tube to a preset projection point.

[0016] In some embodiments of the present application, the loading bay includes an upper cover and a base forming the accommodating cavity, the upper cover is detachably connected to the base, the base is connected to the launch tube, and the power assembly is connected to the base.

[0017] In some embodiments of the present application, the firing assembly further includes a buttress disposed in the accommodating cavity, and the buttress has a receiving groove for placing the projectile.

[0018] In some embodiments of the present application, a first flange is connected to the bottom of the loading bay, a second flange is connected to the launching tube, and the loading bay and the launching tube are connected via the first flange and the second flange.

[0019] In some embodiments of the present application, an exhaust hole is provided at one end of the launch tube away from the loading bay.

[0020] In some embodiments of the present application, the water entry launch test device also includes an image acquisition device, a clock sensor and a data acquisition system. The image acquisition device is arranged outside the water tank, and is used to capture image information of the projectile in the water. The clock sensor is used to calculate the movement time of the projectile. The data acquisition system is electrically connected to the image acquisition device and the clock sensor, and is used to collect the movement information of the projectile in the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0022] Figure 1 The structure diagram of the water launch test device according to the embodiment of the present application is schematically shown;

[0023] Figure 2 The schematic diagram of the assembly structure of the angle adjustment bracket and the connection assembly according to the embodiment of the present application at a certain viewing angle is schematically shown;

[0024] Figure 3 The schematic diagram of the assembly structure of the angle adjustment bracket and the connection assembly according to the embodiment of the present application at another viewing angle is schematically shown;

[0025] Figure 4 A partial structural diagram of a water launch test device according to an embodiment of the present application is schematically shown;

[0026] Figure 5 The structure diagram of the transmitting assembly according to the embodiment of the present application is schematically shown;

[0027] Figure 6 The structure diagram of the support according to the embodiment of the present application is schematically shown;

[0028] Figure 7 The structural diagram of the power assembly according to the embodiment of the present application is schematically shown.

[0029] The reference numerals in the accompanying drawings represent the following:

[0030] 100, rack;

[0031] 200, launching assembly; 210, loading compartment; 211, upper cover; 212, base; 213, first flange; 214, pipeline interface; 220, launching tube; 221, second flange; 222, exhaust hole; 230, bullet support; 231, anti-slip ring; 240, sealing gasket;

[0032] 300, angle adjustment bracket; 310, arc-shaped member; 311, arc-shaped segment; 312, arc-shaped through hole; 320, first support rod; 330, second support rod; 340, fixed angle code; 350, reinforcement rod;

[0033] 400, connecting assembly; 410, connecting rod; 411, guide groove; 420, moving block; 430, clamp;

[0034] 500. Power assembly; 510. High-pressure gas cylinder; 520. High-pressure resistant pipeline; 530. Solenoid valve; 540. Pressure reducing valve. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0039] Figure 1 The structural diagram of the water launch test device according to the embodiment of the present application is schematically shown. Figure 2 The schematic diagram of the assembly structure of the angle adjustment bracket 300 and the connecting assembly 400 at a certain viewing angle according to the embodiment of the present application is schematically shown. Figure 3 The schematic diagram of the assembly structure of the angle adjustment bracket 300 and the connecting assembly 400 according to the embodiment of the present application at another viewing angle is schematically shown. Figure 4 A partial structural diagram of a water launch test device according to an embodiment of the present application is schematically shown.

[0040] like Figures 1 to 4As shown, the present application proposes a water launch test device, including a frame 100, a launch assembly 200, an angle adjustment bracket 300 and a connecting assembly 400; a water tank (not shown in the figure) is arranged at the bottom of the frame 100; the launch assembly 200 is arranged toward the water tank, and the launch assembly 200 is used to load projectiles; the angle adjustment bracket 300 is arranged at the top of the frame 100, and the angle adjustment bracket 300 includes a first support rod 320 and a second support rod 330 arranged to intersect, and an arc-shaped member 310 connected between the first support rod 320 and the second support rod 330; the connecting assembly 400 is connected to the launch assembly 200, and the connecting assembly 400 includes a connecting rod 410, one end of the connecting rod 410 is pivotally connected to the second support rod 330, the connection point of the connecting rod 410 and the second support rod 330 coincides with the center of the arc-shaped member 310, and the other end of the connecting rod 410 can be connected to any position of the arc-shaped member 310 along the circumferential direction, so that the launch angle of the projectile is adjustable.

[0041] The water-entry launch test device in the present technical solution supports other components through the frame 100, keeps the launch assembly 200 at a preset angle through the angle adjustment bracket 300, and launches the projectile through the launch assembly 200. During use, one end of the connecting rod 410 is pivotally connected to the second support rod 330, and the other end of the connecting rod 410 and the arc-shaped member 310 are fixed according to the position of the preset projection point, so that the connecting rod 410 is stably connected to the angle adjustment bracket 300. The launch assembly 200 is installed on the connecting assembly 400 so that the projectile can be projected to the preset projection point. The water-entry launch test device can conveniently, quickly and accurately adjust the water entry angle of the projectile by using the angle adjustment bracket 300, so that the projectile can enter the water vertically or obliquely, and can meet a variety of test requirements.

[0042] Optionally, the moving direction of the projectile inside the launching assembly 200 is consistent with the length direction of the connecting rod 410. Therefore, when the projectile needs to enter the water vertically, the connecting rod 410 is installed vertically, and when the projectile needs to enter the water obliquely, the inclination angle of the connecting rod 410 is consistent with the inclination angle required by the projectile.

[0043] In this embodiment, the projectile can be a small projectile, such as a rotating body projectile with a diameter not exceeding 50 mm. In other embodiments, the selection of the projectile can be adjusted according to the requirements of the specific test.

[0044] Continue to see Figure 1In the present technical solution, the rack 100 is a frame-type structure. Specifically, the rack 100 includes four vertical rods arranged in the vertical direction, and the adjacent vertical rods are connected by one or more horizontal rods. The structural strength of the rack 100 can be increased by arranging multiple horizontal rods between adjacent vertical rods. In order to facilitate movement and positioning, the bottom of each vertical rod is equipped with a universal wheel. The universal wheel allows the rack 100 to be easily moved in the test site. It can be understood that the position setting of the rods in the rack 100 should ensure that it avoids affecting the projection of the projectile, that is, the rods should avoid being set on the moving path of the projectile. In one embodiment, the angle adjustment bracket 300 is connected to the top of the rack 100. In other embodiments, the angle adjustment bracket 300 can also be selectively connected to the middle of the rack 100 or other appropriate positions. According to the specific test requirements and site conditions, the optimal connection position of the angle adjustment bracket 300 is selected to achieve the adjustment of the initial height of the projectile. In this way, the rack 100 not only provides stable support, but also brings great convenience and flexibility to the test operation.

[0045] Furthermore, the central angle of the arc-shaped member 310 ranges from 30° to 150°.

[0046] It can be understood that the range of the projectile entry angle is related to the range of the central angle of the arc 310. Therefore, the central angle of the arc 310 can be set according to the test requirements. For example, the central angle of the arc 310 can be 30°, 45°, 60°, 90°, 120° or 150°, etc.

[0047] Continue to see Figures 1 to 3 , exemplarily, in this embodiment, the second support rod 330 is arranged in the horizontal direction, and the two ends of the second support rod 330 are respectively connected to a horizontal rod on the frame 100. Exemplarily, each end of the second support rod 330 is connected to two fixed angle brackets 340, and the fixed angle bracket 340 includes two mutually perpendicular sheets, one of which is connected to the second support rod 330, and the other is connected to the horizontal rod. Optionally, the fixed angle bracket 340 is respectively connected to the second support rod 330 and the horizontal rod by bolts. Preferably, the number of bolts can be multiple, so as to ensure the stability of the connection.

[0048] Optionally, the first support rod 320 and the second support rod 330 may be in an integrally formed structure, or may be in a structure connected by welding or bolts. In one embodiment, the first support rod 320 is arranged in a vertical direction, and the first support rod 320 and the second support rod 330 are perpendicular to each other. When the first support rod 320 and the second support rod 330 are vertically connected, when the projectile needs to enter the water vertically, the connecting rod 410 needs to be arranged along the length direction of the first support rod 320 and the connecting rod 410 is connected to the first support rod 320.

[0049] Optionally, the first support rod 320 is connected to the middle position of the second support rod 330, one side of the first support rod 320 is used to set the arc 310, and the other side is provided with a reinforcing rod 350. One end of the reinforcing rod 350 is connected to the end of the first support rod 320, and the other end is connected to the end of the second support rod 330, so that the first support rod 320, the second support rod 330 and the reinforcing rod 350 form a triangular bracket structure, so that the angle adjustment bracket 300 has good structural strength and stability. Of course, in other embodiments, the first support rod 320 and the second support rod 330 can be connected at the end, so that the first support rod 320 and the second support rod 330 form an L-shaped bracket structure, and the arc 310 is arranged between the angle formed by the first support rod 320 and the second support rod 330.

[0050] The arc-shaped member 310 can be connected to the first support rod 320, or to the second support rod 330, and of course, can be connected to both the first support rod 320 and the second support rod 330. When the end of the connecting rod 410 away from the second support rod 330 is connected to the arc-shaped member 310, the projectile can enter the water at an inclined angle. It can be understood that the surface where the arc-shaped member 310 and the connecting rod 410 contact and the surface where the first support rod 320 and the connecting rod 410 contact are on the same plane.

[0051] When connecting the connecting rod 410, one end of the connecting rod 410 can be connected to the second support rod 330 first, and then the connecting rod 410 can be rotated to ensure that the projectile can be projected to the position of the preset projection point, and then the end of the connecting rod 410 away from the second support rod 330 is connected to the angle adjustment bracket 300. In one embodiment, the connecting rod 410 is provided with a through hole for passing a bolt, and correspondingly, the second support rod 330 is also provided with a through hole for passing a bolt, so that the connecting rod 410 and the second support rod 330 are connected by bolts. In another embodiment, a positioning pin is provided at one end of the connecting rod 410, and the second support rod 330 is provided with a through hole, and the positioning pin is passed through the through hole and can rotate in the through hole. Optionally, the other end of the connecting rod 410 is provided with a through hole for inserting a bolt, and the position on the arc-shaped member 310 and the first support rod 320 that needs to be connected with the connecting rod 410 is also provided with a through hole for inserting a bolt, so that the connecting rod 410 is connected to the arc-shaped member 310 or the first support rod 320 by bolts. Of course, the connecting rod 410 can also be fixed to the angle adjustment bracket 300 by a strap or other means. Of course, one or more connection points can be added to the connecting rod 410, and the connection with the angle adjustment bracket 300 through multiple connection points can increase the reliability of the connection.

[0052] Furthermore, the arc-shaped member 310 is provided with an arc-shaped through hole 312, and the connecting rod 410 can be connected to the arc-shaped through hole 312 by bolts. The provision of the arc-shaped through hole 312 can ensure that the water entry angle can be adjusted continuously and quickly. The length of the arc-shaped through hole 312 is set as required, and optionally, the central angle of the arc-shaped through hole 312 can be 20° to 80°, thereby meeting the need for adjusting the water entry angle of the projectile.

[0053] Further, see Figure 2 and Figure 3 The arc-shaped member 310 includes a plurality of arc-shaped segments 311 , and the plurality of arc-shaped segments 311 are arranged at intervals along the radial direction of the arc-shaped segment 310 .

[0054] Optionally, each arc segment 311 is provided with an arc through hole 312. In this embodiment, there are three arc segments 311, the radius of the three arc segments 311 gradually increases, and the connecting rod 410 is provided with a through hole connected to the arc segment 311 at a corresponding position.

[0055] In other embodiments, the arc-shaped through hole 312 can be replaced by a plurality of circular holes arranged at intervals, and the line connecting the centers of the plurality of circular holes is an arc. Optionally, in order to facilitate the fixing of the connecting rod 410, a scale can be marked on the arc-shaped member 310, so that the connecting rod 410 determines the installation angle according to the scale, thereby reducing the measurement time each time the connecting rod 410 is installed.

[0056] Further, see Figure 3 and Figure 4 The connecting assembly 400 also includes a moving block 420 and a clamp 430. The connecting rod 410 has a guide groove 411 arranged along its length direction. The moving block 420 is movably connected to the guide groove 411. The clamp 430 is connected to the moving block 420, and the clamp 430 is used to clamp the launching assembly 200.

[0057] By adopting this structural setting, the initial height of the projectile can be accurately adjusted before launching, thereby meeting the specific requirements under various test conditions. For example, part of the moving block 420 is embedded in the guide groove 411, so that the moving block 420 can slide with low friction in the guide groove 411. This low-friction sliding design allows the moving block 420 to be accurately positioned and locked at any position, thereby ensuring the accuracy of the initial height of the projectile.

[0058] The clamp 430 includes a first clamp block and a second clamp block that are symmetrically arranged. The first clamp block and the second clamp block are respectively provided with grooves, and when the two grooves are spliced, a through groove is formed. The launch assembly 200 is clamped inside the through groove, thereby ensuring the stability of the launch assembly 200. Optionally, the first clamp block and the second clamp block are respectively connected to the moving block 420 by bolts. In this way, the first clamp block and the second clamp block can be firmly fixed in place.

[0059] In order to ensure the locking effect of the clamp 430, the first clamp block and the second clamp block can be further locked by bolts. The setting of the clamp 430 can effectively prevent the water entry angle from being offset due to the impact force during the projectile launch process. By using such a clamp 430 to fix the launch assembly 200, the accuracy of the projectile entering the water can be significantly improved, thereby ensuring the reliability of the test results.

[0060] Figure 5 The structure diagram of the transmitting assembly 200 according to the embodiment of the present application is schematically shown. Figure 4 and Figure 5 The water launch test device also includes a power assembly 500. The launch assembly 200 includes a loading compartment 210 and a launch tube 220. The launch tube 220 is connected to the connecting rod 410. The loading compartment 210 has a receiving cavity for placing projectiles. One end of the launch tube 220 is connected to the loading compartment 210 and communicated with the receiving cavity. The other end of the launch tube 220 faces the water tank. The power assembly 500 is communicated with the receiving cavity and is used to provide a propulsion force for the projectile, so as to launch the projectile from the loading compartment 210 through the launch tube 220 to a preset projection point.

[0061] Further, a launch tube 220 with a suitable inner diameter can be selected according to the diameter of the projectile to realize the study of the water entry problem of various projectiles. Since the projectile is accelerated in the launch tube 220 after entering the launch tube 220 from the loading chamber 210, the upper limit of the speed of the projectile can be changed by adjusting the length of the launch tube 220, so that the high-speed water entry of the projectile can be realized. Optionally, the outer diameter of the loading chamber 210 is larger than the outer diameter of the launch tube 220, and the launch tube 220 is inserted into the through groove of the fixture 430, and the bottom of the loading chamber 210 and the top of the fixture 430 are in contact, thereby preventing the launch assembly 200 from falling from the fixture 430. Optionally, the driving force of the projectile comes from high-pressure gas, and by increasing the air pressure in the loading chamber 210, the projectile can be rushed out of the loading chamber 210.

[0062] Furthermore, the loading bay 210 includes an upper cover 211 and a base 212 that form a receiving cavity. The upper cover 211 and the base 212 are detachably connected. The base 212 is connected to the launch tube 220 , and the power assembly 500 is connected to the base 212 .

[0063] In an embodiment, the opening portion of the upper cover 211 can be configured to have an internal thread structure, while the opening portion of the base 212 is correspondingly provided with an external thread. Thus, the upper cover 211 and the base 212 can be threadedly connected by internal and external threads to achieve a tight combination. Of course, external threads can also be provided at the opening of the upper cover 211, and internal threads can be provided at the opening of the base 212, so as to achieve a detachable connection between the two. In the actual operation process, when it is necessary to load a projectile, the upper cover 211 needs to be unscrewed first, and then the projectile is placed inside the base 212, and finally the upper cover 211 is tightened on the base 212. The upper cover 211 and the base 212 of the loading chamber 210 are assembled in a threaded connection, which makes the loading process very convenient and can save the time required for the test. In other embodiments, the upper cover 211 and the base 212 can also be connected in a plug-in manner. In order to improve the sealing performance of the loading chamber 210, a sealing ring can be added at the connection. In addition, the upper cover 211 can be configured as a cylindrical shape, and the base 212 can be configured as a truncated cone shape. In this case, the end of the base 212 with a smaller diameter is connected to the launch tube 220.

[0064] Furthermore, a first flange 213 is connected to the bottom of the loading bay 210 , a second flange 221 is connected to the launching tube 220 , and the loading bay 210 and the launching tube 220 are connected via the first flange 213 and the second flange 221 .

[0065] Specifically, the first flange 213 is arranged at the bottom of the base 212. Optionally, the first flange 213 and the second flange 221 are connected by bolts. In order to increase the sealing between the first flange 213 and the second flange 221, a sealing gasket 240 can be arranged between the first flange 213 and the second flange 221. By adopting the flange to realize a detachable connection mode, the launch tube 220 can be replaced according to the test needs. When the launch assembly 200 and the fixture 430 are fixed, the second flange 221 can be placed on the end face of the fixture 430, so that the second flange 221 plays a role of limiting. In some embodiments, the base 212 and the launch tube 220 can also be an integrally formed structure to improve the stability and reliability of the overall structure.

[0066] Furthermore, an exhaust hole 222 is provided at one end of the launch tube 220 away from the ammunition loading chamber 210. The function of the exhaust holes 222 is to allow the high-pressure gas to diffuse rapidly into the air and dissipate through them. In order to improve the exhaust efficiency and uniformity, the exhaust holes 222 can be arranged in a plurality, and the plurality of exhaust holes 222 are distributed in the bottom area of ​​the launch tube 220 in an orderly array. The array-type exhaust hole 222 arrangement not only helps to improve the uniformity of gas discharge, but also enhances the overall performance and stability of the launch tube 220 to a certain extent.

[0067] Further, Figure 6 The structure diagram of the support 230 according to the embodiment of the present application is schematically shown. Figure 6 The launching assembly 200 further includes a buttress 230 disposed in the accommodating cavity, and the buttress 230 has a receiving groove for placing the projectile.

[0068] In the present technical solution, the cartridge case 230 is set to a truncated cone shape so that it can be easily clamped inside the base 212. When conducting the test, the cartridge case 230 with a suitable inner diameter can be selected according to the specific diameter of the projectile to ensure that it can cooperate with the projectile. In order to ensure that the projectile can be safely placed in the receiving groove without accidentally falling, an anti-skid ring 231 can be set in the inner circle of the receiving groove. There will be a certain friction between the anti-skid ring 231 and the projectile. Only when the projectile is subjected to sufficient driving force can this friction be overcome, so that the projectile can be smoothly launched from the cartridge case 230. The anti-skid ring 231 can be made of rubber material because rubber has good friction properties. In addition, the number of anti-skid rings 231 can be selected according to actual needs, and can be one, two or three, etc. The number is set according to actual needs and is not specifically limited here. In order to better fix the position of the anti-skid ring 231, an annular groove can be set in the inner circle of the receiving groove. The anti-skid ring 231 is embedded in the annular groove to ensure the stability of its position. In order to further ensure that the anti-skid ring 231 does not shift in position, the anti-skid ring 231 may be bonded to the inside of the annular groove, which can effectively prevent the anti-skid ring 231 from moving during use.

[0069] Further, Figure 7 The schematic diagram of the structure of the power assembly according to the embodiment of the present application is shown schematically. Figure 7 The power assembly 500 includes a high-pressure gas cylinder 510, the loading compartment 210 is connected to the high-pressure gas cylinder 510, and the high-pressure gas cylinder 510 is used to provide a propulsion force for the projectile.

[0070] High-pressure gas is rapidly introduced into the loading chamber 210 through the high-pressure gas cylinder 510 , thereby pushing the projectile out of the cartridge case 230 and accelerating the projectile in the launch tube 220 .

[0071] Further, the water launch test device also includes a control system. The control system can control the power assembly 500 to adjust the launch speed of the projectile. Optionally, the power assembly 500 also includes a solenoid valve 530, a pressure reducing valve 540 and a high-pressure resistant pipeline 520. The high-pressure gas cylinder 510 is connected to the loading compartment 210 through the high-pressure resistant pipeline 520. Optionally, a pipeline interface 214 for connecting the high-pressure resistant pipeline 520 is provided on the base 212 of the loading compartment 210. The pipeline interface 214 is provided with an external thread, one end of the solenoid valve 530 is threadedly connected to the pipeline interface 214, and the other end is threadedly connected to the high-pressure resistant pipeline 520. The solenoid valve 530 is electrically connected to the control system, and the control system controls the opening and closing of the solenoid valve 530 to realize the on-off of the high-pressure pipeline. The pressure reducing valve 540 is connected to the outlet of the high-pressure gas cylinder 510, and the pressure reducing valve 540 is electrically connected to the control system, and the control system realizes the flow regulation of the high-pressure gas by controlling the opening of the pressure reducing valve 540.

[0072] During the test preparation process, the solenoid valve 530 remains closed, the high-pressure gas cylinder 510 is opened, and the pressure reducing valve 540 is adjusted. After reaching the specified air pressure, the solenoid valve 530 is opened through the control system, and the high-pressure gas quickly enters the loading compartment 210 of the launch assembly 200, pushing the projectile to move quickly. The projectile is accelerated in the launch tube 220 and shot into the water, and the high-pressure gas quickly dissipates into the air through the exhaust hole 222. After the projectile enters the water, the high-pressure gas cylinder 510 is closed, and the launch work is completed.

[0073] Furthermore, the water launch test device also includes an image acquisition device, a clock sensor and a data acquisition system. The image acquisition device is arranged outside the water tank and is used to capture image information of the projectile in the water. The clock sensor is used to calculate the movement time of the projectile. The data acquisition system is electrically connected to the image acquisition device and the clock sensor and is used to collect the movement information of the projectile in the water.

[0074] Exemplarily, the motion information of the projectile in water includes acceleration and angular acceleration information. The data acquisition system is an inertial measurement unit, which integrates six channels, including acceleration in three directions and angular acceleration. Optionally, the clock sensor can continuously collect data for 40 seconds, meeting the duration requirement of the entire process of the projectile entering the water.

[0075] The use process of the water launch test device provided by this technical solution is as follows:

[0076] According to the test requirements, the launch tube 220 and the ammunition loading chamber 210 of appropriate specifications are selected according to factors such as the size and injection speed of the projectile. The connection between the ammunition loading chamber 210 and the launch tube 220 is achieved through the first flange 213 and the second flange 221. Then, the launch tube 220 is fixed in the through slot of the clamp 430430.

[0077] Determine the location of the preset projection point. Connect one end of the connecting rod 410 to the second support rod 330. When the projectile needs to enter the water in a direction perpendicular to the water surface, connect the end of the connecting rod 410 away from the second support rod 330 to the first support rod 320. When the projectile needs to enter the water at an inclined angle, fix the end of the connecting rod 410 away from the second support rod 330 to the arc-shaped through hole 312 on the arc-shaped segment 311 by bolts.

[0078] The initial height of the projectile is adjusted by moving the position of the moving block 420 on the connecting rod 410 .

[0079] The projectile is placed in the cartridge case 230 , the upper cover 211 of the loading chamber 210 is unscrewed, the cartridge case 230 and the projectile are placed inside the base 212 , and then the upper cover 211 and the base 212 are tightened to complete the placement of the projectile.

[0080] After the projectile is placed, the high-pressure gas cylinder 510 is opened, and the pressure reducing valve 540 is adjusted by the control system. After the specified air pressure is reached, the control system opens the solenoid valve 530, and the high-pressure gas quickly enters the loading compartment 210 of the launching assembly 200 and pushes the projectile out of the cartridge case 230. Then, the projectile is accelerated in the launching tube 220 and shot into the water.

[0081] After the projectile enters the water, the high pressure gas cylinder 510 is closed and the launching operation is completed.

[0082] Process image information and motion information of the projectile in water.

[0083] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A water launch test device, characterized in that: include: A frame (100), wherein a water tank is disposed at the bottom of the frame (100); A launching assembly (200) is disposed toward the water tank, and the launching assembly (200) is used to load projectiles; An angle adjustment bracket (300) is arranged on the top of the frame (100), and the angle adjustment bracket (300) comprises a first support rod (320) and a second support rod (330) arranged to intersect each other, and an arc-shaped member (310) connected between the first support rod (320) and the second support rod (330); A connecting assembly (400) is connected to the launching assembly (200), and the connecting assembly (400) includes a connecting rod (410), one end of which is pivotally connected to the second support rod (330), the connection point between the connecting rod (410) and the second support rod (330) coincides with the center of the arc-shaped member (310), and the other end of the connecting rod (410) can be connected to any position of the arc-shaped member (310) along the circumference, so that the launching angle of the projectile can be adjusted.

2. The water launch test device according to claim 1, characterized in that: The central angle of the arc-shaped member (310) has a value range of 30° to 150°.

3. The water launch test device according to claim 1, characterized in that: The arc-shaped member (310) comprises a plurality of arc-shaped segments (311), and the plurality of arc-shaped segments (311) are arranged at intervals along the radial direction of the arc-shaped segment (310).

4. The water launch test device according to claim 1, characterized in that: The connecting assembly (400) further comprises a moving block (420) and a clamp (430); the connecting rod (410) has a guide groove (411) arranged along its length direction; the moving block (420) is movably connected to the guide groove (411); the clamp (430) is connected to the moving block (420); and the clamp (430) is used to clamp the launching assembly (200).

5. The water launch test device according to claim 1, characterized in that: The water-entry launch test device further comprises a power assembly (500), wherein the launch assembly (200) comprises a loading compartment (210) and a launch tube (220), wherein the launch tube (220) is connected to the connecting rod (410), wherein the loading compartment (210) has a receiving cavity for placing projectiles, wherein one end of the launch tube (220) is connected to the loading compartment (210) and communicates with the receiving cavity, and the other end of the launch tube (220) faces the water tank, and the power assembly (500) is communicated with the receiving cavity and is used to provide a driving force for the projectile, so as to launch the projectile from the loading compartment (210) through the launch tube (220) to a preset projection point.

6. The water launch test device according to claim 5, characterized in that: The ammunition loading chamber (210) comprises an upper cover (211) and a base (212) forming the accommodating cavity; the upper cover (211) and the base (212) are detachably connected; the base (212) is connected to the launch tube (220); and the power assembly (500) is connected to the base (212).

7. The water launch test device according to claim 6, characterized in that: The firing assembly (200) further comprises a cartridge case (230) disposed in the accommodating cavity, wherein the cartridge case (230) has a receiving groove for accommodating the projectile.

8. The water launch test device according to claim 5, characterized in that: The bottom of the ammunition loading compartment (210) is connected to a first flange (213), the launching tube (220) is connected to a second flange (221), and the ammunition loading compartment (210) and the launching tube (220) are connected via the first flange (213) and the second flange (221).

9. The water launch test device according to claim 5, characterized in that: An exhaust hole (222) is provided at one end of the launch tube (220) away from the ammunition loading compartment (210).

10. The water launching test device according to any one of claims 1 to 9, characterized in that: The water-entry launch test device also includes an image acquisition device, a clock sensor and a data acquisition system. The image acquisition device is arranged outside the water tank and is used to capture image information of the projectile in the water. The clock sensor is used to calculate the movement time of the projectile. The data acquisition system is electrically connected to the image acquisition device and the clock sensor and is used to collect movement information of the projectile in the water.

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