Testing device and method for multi-navigation-body jet-out water experiment in decompression environment

Abstract

The invention discloses a testing device and method for a multi-navigation-body jet-out water experiment in a decompression environment. The device comprises a decompression water tank, an air compressor, a guide rail module, a transmitting module, a high-speed camera, a negative pressure display and a synchronizer. Through a synchronizer, a negative pressure display, an electromagnetic valve, a guide rail module and a high-speed camera, multi-phase flow fields, velocity fields and motion attitude information around multiple navigation bodies are captured at the same moment, so that the experiment purpose is achieved, the test precision is greatly improved, the reliability of an experiment result is verified, and the experiment efficiency is improved. And a powerful test technical support is provided for the field of cross-medium multi-navigation-body jet water experiment test.

Description

Technical Field

[0001] The present invention relates to the technical field of water-emergence experiments of navigation bodies, and more specifically, to a testing device and method for a water-emergence experiment of multiple navigation bodies in a reduced pressure environment. Background Art

[0002] When the vehicle moves from underwater to the surface, the fluid medium changes from a single gas to a gas-liquid-vapor multiphase coupling, which is an unsteady and highly nonlinear turbulence problem. In addition, during the salvo process, the flow fields between the vehicles will produce flow interference with each other, which has a great impact on the vehicle's motion posture and force out of the water. Therefore, the research on the vehicle's emergence from water is very challenging.

[0003] At present, flow field experimental tests mainly use high-speed cameras to take instantaneous photos of the flow field and motion posture near the experimental vehicle, and then import the captured images into post-processing software for analysis to obtain the transient flow field and motion law of the vehicle. However, the existing flow field test platforms under variable pressure environments are mostly aimed at static models, such as water tunnel experiments. When it comes to flow field tests such as underwater vertical launch or free movement, water tunnel static tests are often used in combination with semi-empirical and semi-theoretical techniques to restore flow field images, which not only brings large errors, but also affects the reliability of test results.

[0004] Therefore, the present invention provides a test device and method for a multi-vehicle salvo water exit experiment in a decompression environment. Summary of the invention

[0005] In view of this, the present invention provides a testing device and method for a multi-vehicle salvo water exit experiment in a decompression environment.

[0006] On the one hand, the present invention provides a test device for a multi-vehicle salvo water exit experiment in a decompression environment, comprising:

[0007] The decompression water tank comprises a top plate and a bottom plate which are arranged opposite to each other in a direction perpendicular to the ground, the top plate is provided with a hollow area and a pressure extraction port, the hollow area is engaged with the end cover, and the pressure extraction port is connected with the air inlet of the air compressor;

[0008] A guide rail module is arranged in the decompression water tank, comprising a lifting assembly extending in a direction perpendicular to the ground and a translation assembly extending in a first direction, wherein the translation assembly is slidably connected to the lifting assembly, and the lifting assembly drives the translation assembly to move in a direction perpendicular to the ground, wherein the first direction is perpendicular to the direction perpendicular to the ground;

[0009] The launching module comprises a mobile platform, wherein a side of the mobile platform close to the base plate is slidably connected to the translation assembly, and the translation assembly drives the mobile platform to move along the first direction; the launching module also comprises at least two cylinders, one end of the cylinder is engaged with a gas outlet base, and a side of the gas outlet base away from the cylinder is fixedly connected to a side of the mobile platform away from the base plate; the launching module also comprises a gas storage bottle fixed to a side of the mobile platform away from the base plate, the gas storage bottle is arranged correspondingly to the gas outlet base, the gas outlet of the gas storage bottle is connected to the corresponding gas inlet of the gas outlet base, and a solenoid valve is arranged at the gas outlet end of the gas storage bottle;

[0010] A high-speed camera is arranged outside the decompression water tank, and the shooting range of the high-speed camera covers the transmitting module and the area between the transmitting module and the top plate in a direction perpendicular to the ground;

[0011] A negative pressure display is arranged on a side of the top plate away from the bottom plate, the negative pressure display is communicated with the interior of the decompression water tank, and is used to measure the pressure inside the decompression water tank;

[0012] The synchronizer is electrically connected to the negative pressure display, the solenoid valve, the guide rail module and the high-speed camera respectively.

[0013] Optionally, the end cover comprises a cover body and a protrusion arranged on one side of the cover body, and the protrusion is engaged with the hollow area;

[0014] A side of the protrusion close to the bottom plate and a side of the top plate close to the bottom plate are both provided with shock-absorbing pads.

[0015] Optionally, the outer wall of the protrusion is provided with a sealing layer.

[0016] Optionally, a support column is provided on a side of the bottom plate away from the top plate, an end of the support column away from the bottom plate is connected to a suction cup, a side of the suction cup away from the support column is in contact with the ground, and the suction cup is provided corresponding to the support column;

[0017] The number of the support columns is at least 3, and at least 3 support columns are arranged in a central array around the base plate.

[0018] Optionally, the bottom plate is provided with a drain outlet, and the drain outlet is provided with a switch.

[0019] Optionally, the side wall of the decompression water tank is provided with at least two transparent windows, and the high-speed camera faces the transparent windows;

[0020] A fill light is arranged outside the decompression water tank, and the fill light faces the transparent window.

[0021] Optionally, the synchronizer is electrically connected to the high-speed camera via a high-speed camera control computer, and the synchronizer is electrically connected to the guide rail module via the guide rail control computer.

[0022] On the other hand, the present invention further provides a test method for a multi-navigation body salvo water release experiment in a decompression environment, and a test device for a multi-navigation body salvo water release experiment in a decompression environment as described above, comprising:

[0023] Remove the end cover and fill the pressure reducing water tank with water;

[0024] The control rail assembly drives the moving platform to approach the hollow area;

[0025] Loading a navigation body into the cylinder, the navigation body corresponding to the cylinder one by one;

[0026] Covering a sealing film on a side of the cylinder away from the moving platform;

[0027] Controlling the guide rail assembly to drive the mobile platform to reach a preset position;

[0028] Engage the end cover with the hollow area;

[0029] Turning on the air compressor, and when the negative pressure display detects that the pressure inside the pressure reducing water tank reaches a preset pressure, turning off the air compressor and sending a start signal to the synchronizer;

[0030] The synchronizer receives the start signal, controls the translation assembly to move at a preset speed and in a preset direction, controls the high-speed camera to start recording, and controls the solenoid valve to open in a preset sequence, and when the solenoid valve is opened, the navigation body in the cylinder corresponding to the solenoid valve is ejected;

[0031] After all the navigation bodies are ejected and fall, the high-speed camera is controlled to stop recording to obtain and save the data information.

[0032] Optionally, after all the navigation bodies are ejected and fall, the method further includes:

[0033] Dismantling the end covers and salvaging all the navigation bodies;

[0034] Controlling the guide rail assembly to drive the mobile platform to approach the hollow area to discharge the water in the cylinder;

[0035] Turn on the switch to discharge the water in the pressure reducing water tank.

[0036] Optionally, before starting the air compressor, the method includes:

[0037] Set the position of the high-speed camera, set the position of the light, set the shooting parameters of the high-speed camera, set the preset pressure for the negative pressure display, and set the preset speed, the preset direction and the preset order for the synchronizer.

[0038] Compared with the prior art, the test device and method for the multi-vehicle salvo water release experiment in a decompression environment provided by the present invention achieves at least the following beneficial effects:

[0039] The present invention provides a testing device and method for a multi-navigation body salvo water exit experiment under a reduced pressure environment. The experimental device is based on a reduced pressure water tank, and cooperates with a guide rail module, a launch module, a high-speed camera, a negative pressure display and a synchronizer to carry out multiphase flow field and motion interference tests during the free movement of multiple navigation bodies toward the water surface at a certain water depth. Through the synchronizer, negative pressure display, solenoid valve, guide rail module and high-speed camera, the multiphase flow field, velocity field and motion posture information around the multi-navigation body experimental model at the same time are captured, thereby achieving the experimental purpose, greatly improving the test accuracy, verifying the reliability of the experimental results, and providing strong testing technology support for the field of cross-media multi-navigation body salvo water exit experiment testing.

[0040] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0041] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0043] Figure 1 It is a structural schematic diagram of a test device for a multi-navigation body salvo water release experiment in a decompression environment provided by the present invention.

[0044] Figure 2 It is a structural diagram of the transmitting module.

[0045] Figure 3 It is a flow chart of a test method for a multi-vehicle salvo water exit experiment in a decompression environment provided by the present invention.

[0046] Figure 4 It is an experimental test flow field diagram.

[0047] Figure 5 It is a speed diagram of the first-launch vehicle.

[0048] Figure 6It is a motion trajectory diagram of the first-launch vehicle in the direction perpendicular to the ground.

[0049] In the figure: 1. pressure reducing water tank; 2. top plate; 3. bottom plate; 4. pressure extraction port; 5. end cover; 6. lifting assembly; 7. translation assembly; 8. launch module; 9. mobile platform; 10. cylinder; 11. air outlet base; 12. high-speed camera; 13. synchronizer; 14. cover; 15. sealing layer; 16. support column; 17. suction cup; 18. drain outlet; 19. transparent window; 20. fill light; 21. high-speed camera control computer; 22. guide rail control computer; 23. motor; 24. lead screw; 25. guide rail; 26. waterproof box; X, first direction; Z, direction perpendicular to the ground. DETAILED DESCRIPTION

[0050] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0051] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0052] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0053] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0054] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0055] Combination Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of a test device for a multi-vehicle salvo water release experiment under a decompression environment provided by the present invention. Figure 2 1 is a structural schematic diagram of a launch module, which illustrates a specific embodiment of a test device for a multi-vehicle salvo water launch experiment under a decompression environment provided by the present invention, comprising:

[0056] The pressure reducing water tank 1 comprises a top plate 2 and a bottom plate 3 which are arranged opposite to each other in a direction Z perpendicular to the ground. The top plate 2 is provided with a hollow area and a pressure extraction port 4. The hollow area is engaged with an end cover 5. The pressure extraction port 4 is connected to the air inlet of the air compressor.

[0057] The guide rail module is arranged in the decompression water tank 1, and includes a lifting component 6 extending in a direction Z perpendicular to the ground and a translation component 7 extending in a first direction X. The translation component 7 is slidably connected to the lifting component 6. The lifting component 6 drives the translation component 7 to move in a direction Z perpendicular to the ground. The first direction X is perpendicular to the direction Z perpendicular to the ground.

[0058] The launching module 8 includes a mobile platform 9, and the side of the mobile platform 9 close to the bottom plate 3 is slidably connected to the translation assembly 7, and the translation assembly 7 drives the mobile platform 9 to move along the first direction X; the launching module 8 also includes at least two cylinders 10, one end of the cylinder 10 is engaged with a gas outlet base 11, and the side of the gas outlet base 11 away from the cylinder 10 is fixedly connected to the side of the mobile platform 9 away from the bottom plate 3; the launching module 8 also includes a gas cylinder fixed to the side of the mobile platform 9 away from the bottom plate 3, the gas cylinder and the gas outlet base 11 are arranged correspondingly, the gas outlet of the gas cylinder is connected to the corresponding gas inlet of the gas outlet base 11, and the gas outlet end of the gas cylinder is provided with a solenoid valve.

[0059] The high-speed camera 12 is arranged outside the decompression water tank 1 , and the shooting range of the high-speed camera 12 covers the transmitting module 8 and the area between the transmitting module 8 and the top plate 2 along the direction Z perpendicular to the ground.

[0060] The negative pressure display is arranged on a side of the top plate 2 away from the bottom plate 3 . The negative pressure display is connected to the interior of the decompression water tank 1 and is used to measure the pressure inside the decompression water tank 1 .

[0061] The synchronizer 13 is electrically connected to the negative pressure display, the solenoid valve, the guide rail 25 module and the high-speed camera 12 respectively.

[0062] It should be noted that the hollow area is connected to the interior of the decompression water tank 1, and the pressure extraction port 4 is connected to the interior of the decompression water tank 1, so that the air compressor can be controlled to decompress the interior of the decompression water tank 1 through the pressure extraction port 4. The lifting assembly 6 and the translation assembly 7 in the guide rail module both adopt the existing technology, which can realize the movement of the mobile platform 9 to the preset position. Specifically, the lifting assembly 6 and the translation assembly 7 can both adopt a slide, which includes a motor 23, a lead screw 24, a slider and a guide rail 25. The motor 23 adopts a waterproof motor. In this embodiment, the model of the motor 23 is an IP68 waterproof reduction motor. Of course, it is not limited to this and can be adjusted according to actual needs. The number of lifting assemblies 6 is 2, and the two lifting assemblies 6 are arranged relatively along the first direction X. One end of the translation assembly 7 is fixedly connected to the slider of one lifting assembly 6, and the other end is fixedly connected to the slider of the other lifting assembly 6. The side of the mobile platform 9 close to the bottom plate 3 is fixedly connected to the slider of the translation assembly 7.

[0063] It can be understood that the experimental device based on the reduced pressure water tank 1, in conjunction with the guide rail module, the launch module 8, the high-speed camera 12, the negative pressure display and the synchronizer 13, carries out multiphase flow field and motion interference tests during the free movement of multiple navigation bodies to the water surface at a certain water depth. Through the synchronizer 13, the negative pressure display, the solenoid valve, the guide rail 25 module and the high-speed camera 12, the multiphase flow field, velocity field, and motion posture information around the multi-navigation body experimental model at the same time are captured, thereby achieving the experimental purpose, greatly improving the test accuracy, verifying the reliability of the experimental results, and providing strong testing technology support for the field of cross-media multi-navigation body salvo water test.

[0064] In some optional embodiments, continue to refer to Figure 1 The end cover 5 includes a cover body 14 and a protrusion disposed on one side of the cover body 14, and the protrusion is engaged with the hollow area;

[0065] A side of the protrusion close to the bottom plate 3 and a side of the top plate 2 close to the bottom plate 3 are both provided with shock-absorbing pads.

[0066] It is understandable that when the navigation body moves upward, it may hit the side of the protrusion close to the bottom plate 3 or the side of the top plate 2 close to the bottom plate 3, so shock-absorbing pads are set on the side of the protrusion close to the bottom plate 3 and the side of the top plate 2 close to the bottom plate 3 for protection.

[0067] In some optional embodiments, continue to refer to Figure 1 The outer wall of the protrusion is provided with a sealing layer 15.

[0068] It is understandable that, since the pressure inside the decompression water tank 1 needs to be controlled, it is necessary to ensure that the decompression water tank 1 has good sealing properties. A sealing layer 15 is provided on the outer wall of the protrusion to make the protrusion and the hollow area fit more tightly, thereby avoiding air leakage after the protrusion and the hollow area are fit together, which affects the experimental results.

[0069] In some optional embodiments, continue to refer to Figure 1 A support column 16 is provided on one side of the bottom plate 3 away from the top plate 2, and a suction cup 17 is connected to one end of the support column 16 away from the bottom plate 3, and a side of the suction cup 17 away from the support column 16 is in contact with the ground, and the suction cup 17 is provided correspondingly to the support column 16;

[0070] The number of the support columns 16 is at least three, and at least three support columns 16 are arranged in an array around the center of the bottom plate 3 .

[0071] It can be understood that a support column 16 is provided on the side of the bottom plate 3 away from the top plate 2 to ensure that the pressure reducing water tank 1 has a certain distance from the ground, which is convenient for forklift transportation, and a suction cup 17 is connected to the end of the support column 16 away from the bottom plate 3, which can increase the stability between the overall device and the ground and prevent the impact force during the launch of the vehicle from causing the overall device to shake or tip over.

[0072] In some optional embodiments, continue to refer to Figure 1 The bottom plate 3 is provided with a drain outlet 18, and the drain outlet 18 is provided with a switch.

[0073] It can be understood that by controlling the switch, the water inside the pressure reducing water tank 1 can be easily discharged.

[0074] In some optional embodiments, continue to refer to Figure 1 , the side wall of the decompression water tank 1 is provided with at least two transparent windows 19, and the high-speed camera 12 faces the transparent windows 19;

[0075] The fill light 20 is disposed outside the decompression water tank 1 , and faces the transparent window 19 .

[0076] It is understandable that if the decompression water tank 1 is transparent, the high-speed camera 12 can directly shoot the internal situation of the decompression water tank 1. If the decompression water tank 1 is made of metal material in order to increase the firmness of the device, a transparent window 19 needs to be provided to facilitate the shooting of the high-speed camera 12, and a fill light 20 needs to be provided to provide light.

[0077] In some optional embodiments, continue to refer to Figure 1 The synchronizer 13 is electrically connected to the high-speed camera 12 via the high-speed camera control computer 21 , and the synchronizer 13 is electrically connected to the guide rail module via the guide rail control computer 22 .

[0078] In some optional embodiments, continue to refer to Figure 2 The transmitting module 8 may further include a waterproof box 26, in which the gas cylinder is placed. A hole is provided on the side of the waterproof box 26 away from the bottom plate 3, and a pipe part is located in the hole. One end is connected to the gas outlet of the gas cylinder, and the other end is connected to the gas inlet of the gas outlet base 11. The waterproof box 26 can reduce or prevent the water and oxygen in the decompression tank 1 from corroding the gas cylinder.

[0079] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 3 It is a flow chart of a test method of a multi-vehicle salvo water exit experiment under a decompression environment provided by the present invention. Figure 4 It is an experimental test flow field diagram. Figure 5 It is a speed diagram of the first-launch vehicle. Figure 6 The figure is a motion trajectory diagram of the first-launch navigation body in a direction perpendicular to the ground, to illustrate a specific embodiment of the test method of the multi-navigation body salvo water release experiment under a decompression environment provided by the present invention, and the test device of the multi-navigation body salvo water release experiment under a decompression environment applied to any one of the above embodiments includes:

[0080] S101: Remove the end cover and fill the pressure reducing water tank with water;

[0081] S102: Control the guide rail assembly to drive the mobile platform to approach the hollow area;

[0082] S103: Loading the navigation body into the cylinder, with the navigation body corresponding to the cylinder one by one;

[0083] S104: Covering a sealing film on a side of the cylinder away from the moving platform;

[0084] S105: Control the guide rail assembly to drive the mobile platform to reach a preset position;

[0085] S106: Engage the end cover with the hollow area;

[0086] S107: Turn on the air compressor, and when the negative pressure display detects that the pressure inside the pressure reducing water tank reaches the preset pressure, turn off the air compressor and send a start signal to the synchronizer;

[0087] S108: The synchronizer receives the start signal, controls the translation assembly to move at a preset speed and in a preset direction, controls the high-speed camera to start recording, and controls the solenoid valve to open in a preset sequence. When the solenoid valve is opened, the navigation body in the cylinder corresponding to the solenoid valve is ejected;

[0088] S109: After all the navigation bodies are ejected and fall, the high-speed camera is controlled to end recording to obtain data information and save it.

[0089] It should be noted that before each experimental test, it is necessary to wait for the water surface in the decompression water tank to be in a static state to prevent the surface waves from affecting the flow field test results. Before using the air compressor to extract the pressure, it is necessary to carefully check whether each part is working normally, and at the same time check whether the end cover is sealed intact. Turn on the air compressor, and the air compressor will pump the pressure above the water surface in the closed decompression water tank to the outside of the decompression water tank through the pressure extraction port to achieve adjustable static water pressure in the decompression water tank. Before the experimental test, it is necessary to set the position of the high-speed camera, the position of the light, the shooting parameters of the high-speed camera, the preset pressure for the negative pressure display, the preset speed, preset direction and preset sequence for the synchronizer, etc. Of course, it is not limited to this and can be adjusted according to actual needs. The shooting parameters of the high-speed camera include aperture size, focal length, shooting frequency and resolution, etc. Set the position of the high-speed camera, the position of the light and the shooting parameters of the high-speed camera to ensure that clear photos can be taken in the experiment.

[0090] It can be understood that the gas cylinder supplies gas to the gas base. In this embodiment, each gas cylinder can achieve a maximum transient gas supply of 1.5MPa. The speed of the 50mm diameter vehicle model can reach 40m / s, with an error of ±0.5m / s. In step S109, after the high-speed camera finishes recording, the video information is obtained, and the video information can be processed, and then the multiphase flow field around the multi-vehicle experimental model at the same time is obtained through post-processing software (refer to Figure 4 ), velocity field (refer to Figure 5 ), and sports posture (refer to Figure 6 )information.

[0091] In some optional embodiments, after all the navigation bodies are launched and fall, the method further includes:

[0092] Remove the end caps and salvage all navigation bodies;

[0093] The control rail assembly drives the mobile platform to approach the hollow area to discharge the water in the cylinder;

[0094] Turn on the switch to drain the water in the pressure reducing tank.

[0095] The test method for the multi-vehicle salvo water release experiment under a reduced pressure environment provided by the present invention can realize the capture of the multiphase flow field, velocity field, and motion posture information around the multi-vehicle experimental model at the same time through a synchronizer, a negative pressure display, a solenoid valve, a guide rail module and a high-speed camera, thereby achieving the experimental purpose, greatly improving the test accuracy, verifying the reliability of the experimental results, and providing strong testing technology support for the field of cross-media multi-vehicle salvo water release experiment testing.

[0096] It can be seen from the above embodiments that the test device and method for the multi-vehicle salvo water release experiment under a decompression environment provided by the present invention achieve at least the following beneficial effects:

[0097] The present invention provides a testing device and method for a multi-navigation body salvo water exit experiment under a reduced pressure environment. The experimental device is based on a reduced pressure water tank, and cooperates with a guide rail module, a launch module, a high-speed camera, a negative pressure display and a synchronizer to carry out multiphase flow field and motion interference tests during the free movement of multiple navigation bodies toward the water surface at a certain water depth. Through the synchronizer, negative pressure display, solenoid valve, guide rail module and high-speed camera, the multiphase flow field, velocity field and motion posture information around the multi-navigation body experimental model at the same time are captured, thereby achieving the experimental purpose, greatly improving the test accuracy, verifying the reliability of the experimental results, and providing strong testing technology support for the field of cross-media multi-navigation body salvo water exit experiment testing.

[0098] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A test device for a multi-vehicle salvo water launch experiment in a decompression environment, characterized in that: include: The decompression water tank comprises a top plate and a bottom plate which are arranged opposite to each other in a direction perpendicular to the ground, the top plate is provided with a hollow area and a pressure extraction port, the hollow area is engaged with the end cover, and the pressure extraction port is connected with the air inlet of the air compressor; A guide rail module is arranged in the decompression water tank, comprising a lifting assembly extending in a direction perpendicular to the ground and a translation assembly extending in a first direction, wherein the translation assembly is slidably connected to the lifting assembly, and the lifting assembly drives the translation assembly to move in a direction perpendicular to the ground, wherein the first direction is perpendicular to the direction perpendicular to the ground; The launching module comprises a mobile platform, wherein a side of the mobile platform close to the base plate is slidably connected to the translation assembly, and the translation assembly drives the mobile platform to move along the first direction; the launching module also comprises at least two cylinders, one end of the cylinder is engaged with a gas outlet base, and a side of the gas outlet base away from the cylinder is fixedly connected to a side of the mobile platform away from the base plate; the launching module also comprises a gas storage bottle fixed to a side of the mobile platform away from the base plate, the gas storage bottle is arranged correspondingly to the gas outlet base, the gas outlet of the gas storage bottle is connected to the corresponding gas inlet of the gas outlet base, and a solenoid valve is arranged at the gas outlet end of the gas storage bottle; A high-speed camera is arranged outside the decompression water tank, and the shooting range of the high-speed camera covers the transmitting module and the area between the transmitting module and the top plate in a direction perpendicular to the ground; A negative pressure display is arranged on a side of the top plate away from the bottom plate, the negative pressure display is communicated with the interior of the decompression water tank, and is used to measure the pressure inside the decompression water tank; The synchronizer is electrically connected to the negative pressure display, the solenoid valve, the guide rail module and the high-speed camera respectively.

2. The test device for the multi-vehicle salvo water release experiment in a decompression environment according to claim 1 is characterized in that: The end cover comprises a cover body and a protrusion arranged on one side of the cover body, and the protrusion is engaged with the hollow area; A side of the protrusion close to the bottom plate and a side of the top plate close to the bottom plate are both provided with shock-absorbing pads.

3. The testing device for the multi-vehicle salvo water release experiment under a decompression environment according to claim 2 is characterized in that: The outer wall of the protrusion is provided with a sealing layer.

4. The testing device for the multi-vehicle salvo water release experiment in a decompression environment according to claim 1 is characterized in that: A support column is provided on one side of the bottom plate away from the top plate, a suction cup is connected to one end of the support column away from the bottom plate, a side of the suction cup away from the support column is in contact with the ground, and the suction cup is provided corresponding to the support column; The number of the support columns is at least 3, and at least 3 support columns are arranged in a central array around the base plate.

5. The testing device for the multi-vehicle salvo water release experiment in a decompression environment according to claim 1 is characterized in that: The bottom plate is provided with a drain outlet, and the drain outlet is provided with a switch.

6. The testing device for the multi-vehicle salvo water release experiment in a decompression environment according to claim 1 is characterized in that: The side wall of the decompression water tank is provided with at least two transparent windows, and the high-speed camera faces the transparent windows; A fill light is arranged outside the decompression water tank, and the fill light faces the transparent window.

7. The testing device for the multi-vehicle salvo water release experiment in a decompression environment according to claim 1, characterized in that: The synchronizer is electrically connected to the high-speed camera via a high-speed camera control computer, and the synchronizer is electrically connected to the guide rail module via the guide rail control computer.

8. A test method for a multi-vehicle salvo water launch experiment in a decompression environment, characterized in that: The test device for the multi-vehicle salvo water exit experiment in a decompression environment according to any one of claims 1 to 7 comprises: Remove the end cover and fill the pressure reducing water tank with water; The control rail assembly drives the moving platform to approach the hollow area; Loading a navigation body into the cylinder, the navigation body corresponding to the cylinder one by one; Covering a sealing film on a side of the cylinder away from the moving platform; Controlling the guide rail assembly to drive the mobile platform to reach a preset position; Engage the end cover with the hollow area; Turning on the air compressor, and when the negative pressure display detects that the pressure inside the pressure reducing water tank reaches a preset pressure, turning off the air compressor and sending a start signal to the synchronizer; The synchronizer receives the start signal, controls the translation assembly to move at a preset speed and in a preset direction, controls the high-speed camera to start recording, and controls the solenoid valve to open in a preset sequence, and when the solenoid valve is opened, the navigation body in the cylinder corresponding to the solenoid valve is ejected; After all the navigation bodies are ejected and fall, the high-speed camera is controlled to stop recording to obtain and save the data information.

9. The test method for the multi-vehicle salvo water release experiment in a decompression environment according to claim 8, characterized in that: After all the navigation bodies are launched and fall, the method further includes: Dismantling the end covers and salvaging all the navigation bodies; Controlling the guide rail assembly to drive the mobile platform to approach the hollow area to discharge the water in the cylinder; Turn on the switch to discharge the water in the pressure reducing water tank.

10. The test method for the multi-vehicle salvo water release experiment in a decompression environment according to claim 8, characterized in that: Before starting the air compressor, the steps include: Set the position of the high-speed camera, set the position of the light, set the shooting parameters of the high-speed camera, set the preset pressure for the negative pressure display, and set the preset speed, the preset direction and the preset order for the synchronizer.

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