A ground simulation testing device for a water-entry experiment of a vehicle

Abstract

The application provides a ground simulation testing device for a water-out experiment of a navigation body, and belongs to the field of water-out experiments of navigation body models. The device solves the problems of high cost of underwater testing, difficulty in obtaining parameters, and inability to obtain various experimental data due to fixed jet angles. The device comprises a shell, a gas production device arranged inside the shell for producing gas, a second pressure sensor arranged on the gas production device, a gas collection chamber connected to an outlet end of the gas production device and provided with an electromagnetic valve inside, a plurality of exhaust ports arranged on a peripheral wall of the gas collection chamber, an exhaust pipe with an adjustable exhaust angle connected to each exhaust port, a first pressure sensor arranged at the plurality of exhaust ports of the gas collection chamber, and a control system connected to the gas production device, the first pressure sensor, the electromagnetic valve, the second pressure sensor, and / or a power supply system. The power supply system is used for supplying power to the components requiring power supply. The device is mainly used for ground simulation testing of navigation bodies.

Description

Technical Field

[0001] This invention belongs to the field of water-emergence experiments of aircraft models, and in particular relates to a ground simulation test device for water-emergence experiments of aircraft models. Background Technology

[0002] Model experiments are an important method for studying the motion laws of water-emerging objects. Compared with prototype experiments, model experiments applying similarity theory have multiple advantages. They can highlight the main contradictions in complex experimental processes and facilitate the discovery of internal connections. Moreover, model experiments are easier to manufacture, disassemble, and require fewer personnel, thus saving money, manpower, and time compared to prototype experiments.

[0003] However, conducting a single water-emergence experiment on a model aircraft still requires considerable investment, including pre-experiment preparation and post-experiment processing. To further reduce testing costs, ground-based testing equipment can be used to simulate the core technologies of the water-emergence experiment. To maintain similarity, the water-emergence experiment requires reduced environmental pressure. This reduced pressure causes natural cavitation on the surface of the aircraft during underwater movement, negatively impacting its underwater attitude and potentially leading to instability. Therefore, underwater attitude adjustment is a crucial technology for water-emergence experiments, directly affecting their success. Currently, a common practice is to ventilate the surface of the aircraft to suppress cavitation and adjust its underwater attitude. Ground-based testing equipment can simulate the core gas generation process of the water-emergence gas generation and attitude adjustment experiment, including the control, execution, and testing of key experimental parameters. Conducting the water-emergence experiment after completing the ground-based simulation test significantly improves efficiency and effectiveness. Summary of the Invention

[0004] In view of this, the present invention aims to propose a ground simulation test device for underwater vehicle emergence experiments, so as to solve the problems of high cost of underwater testing, difficulty in obtaining parameters, and inability to obtain a variety of experimental data due to fixed jet angle.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ground simulation test device for a waterborne vehicle experiment, comprising: The housing has an internal gas generating device for generating gas, and the gas generating device is equipped with a second pressure sensor for collecting internal pressure. The gas collection chamber has an inlet end connected to the outlet end of the gas generating device and is equipped with a solenoid valve inside. Several exhaust ports are set on the peripheral wall, and each exhaust port is connected to an exhaust pipe with an adjustable exhaust angle. The first pressure sensor is provided in several locations and distributed at several exhaust ports in the gas collection chamber; The control system is connected to the gas generating device, the first pressure sensor, the solenoid valve, the second pressure sensor, and / or the power supply system.

[0006] Furthermore, each air outlet of the air collection chamber is connected to a corresponding exhaust pipe via a transition section. The transition section is made of a deformable material. The end of the exhaust pipe near the transition section is rotatably connected to the housing, and the end away from the transition section is adjusted by an angle adjustment component.

[0007] Furthermore, the angle adjustment component is a linear drive component, with its movable end connected to the exhaust pipe and its fixed end connected to the inner wall of the housing.

[0008] Furthermore, the linear drive assembly includes an electric drive device and a telescopic rod that is driven by the electric drive device to perform an action.

[0009] Furthermore, the gas generating device is equipped with a solid propellant connected to the control system, and a nozzle is provided at the outlet end.

[0010] Furthermore, the gas generating device is fixed inside the housing via a connecting part.

[0011] Furthermore, two of the first pressure sensors are arranged in a circumferentially symmetrical manner within the gas collection chamber.

[0012] Furthermore, the device also includes a data acquisition system and a testing system. The data acquisition system is used to acquire the motion data of the device measured by the testing system and transmit it to the control system to control the action of the device. Both the data acquisition system and the testing system are connected to the power supply system.

[0013] Furthermore, the device also includes a slide table, on which the housing is slidably mounted, and several high-speed cameras for recording the movement of the housing are arranged along the axial direction of the slide table.

[0014] Furthermore, the slide table includes a slide table base, a toothed belt, a motion platform, and a servo motor. The motion platform is slidably mounted on the slide table base. The rotating end of the servo motor is connected to the toothed belt, and the toothed belt is connected to the motion platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention not only simulates the physical structure behavior of a vehicle during the process of emerging from the water, generating gas, and adjusting its attitude, but also integrates software components such as a control system, a data acquisition system, and a testing system, forming a complete closed-loop system. It not only simulates mechanical movements but also has data feedback and automatic adjustment functions, which can more realistically reflect actual working conditions.

[0016] 2. In response to the cavitation phenomenon generated when a vehicle moves at high speed in water, this device can simulate gas generation and attitude adjustment under negative pressure conditions, providing an experimental basis for solving the attitude instability problem caused by cavitation.

[0017] 3. The experiment has a short cycle, is simple to operate, and can be reused, which significantly reduces the cost of scientific research (human resources, funds, and time); it lays a solid technical foundation for subsequent real-world waterborne experiments and achieves the effect of "achieving twice the result with half the effort".

[0018] 4. The ventilation tubes are evenly distributed around the circumference of the shell and are controlled to rotate around the support axis by the angle adjustment component. The rotation angle range is 0-30 degrees. The ventilation angle can be adjusted in real time according to the ventilation effect to optimize the posture adjustment effect.

[0019] 5. A gas collection chamber is provided to collect and buffer the high-temperature and high-pressure gas from the gas generating device, and then discharge it through the vent pipe. The gas collection chamber is equipped with a pressure sensor and a solenoid valve to realize dynamic regulation of gas flow and pressure.

[0020] 6. The shell is made of high-strength materials to ensure it can withstand the impact generated during gas production. Reinforcing plates are installed in key areas to prevent shell deformation. The mounting plate is combined with the long screw assembly to securely support the power supply, control, and data acquisition systems.

[0021] 7. All components are connected by bolts, glue, etc., which facilitates disassembly, maintenance and reuse; the testing system uses double-sided adhesive for easy installation.

[0022] 8. The system consists of a test system, a data acquisition system, a control system, and actuators (gas generating device, solenoid valve, electric drive device), forming a complete closed loop. It can determine and trigger the operation of the gas generating device in real time based on the test data.

[0023] 9. The control system dynamically adjusts the opening of the solenoid valve based on the pressure data inside the gas collection chamber and the gas generating device to optimize the ventilation flow and pressure. At the same time, it controls the electric drive device to adjust the angle of the ventilation pipe to further improve ventilation efficiency.

[0024] 10. The control system logic can be modified according to experimental requirements to adapt to different working conditions. Experimenters can expand the application range by changing the control logic, solenoid valve opening degree, telescopic rod length, etc.

[0025] 11. The ground simulation test device is installed on a slide platform. The movement of the device driven by the slide platform simulates the motion of the vehicle in water. The speed of the slide platform is adjustable and it is suitable for various experimental conditions.

[0026] 12. Use a high-speed camera to capture the entire gas production and attitude adjustment process from all angles, intuitively evaluate the ventilation effect, and combine it with pressure sensor data to achieve qualitative and quantitative analysis.

[0027] 13. The test system measures parameters such as acceleration and angular velocity. The data is processed by the acquisition system and then transmitted to the control system to form a complete data chain.

[0028] 14. Significantly reduce the number of personnel required for experiments, the experimental period and financial investment, reduce the risk of prototype test failure, and avoid waste of resources.

[0029] 15. The experiment cycle is short, and multiple repeated experiments can be conducted in a short period of time to quickly iterate and improve the control strategy and experimental parameters.

[0030] 16. It is not only applicable to waterborne experiments, but can also be extended to other fields that require gas generation for attitude control or ventilation control, and has good scalability and compatibility. Attached Figure Description

[0031] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a cross-sectional view of a ground simulation test device for a water-emergence experiment of a ship body, as described in this invention. Figure 2 This is a partially enlarged view of the connection relationship of the exhaust pipe described in this invention; Figure 3 This is a schematic diagram of the gas generating device described in this invention; Figure 4 This is a schematic diagram showing the relative positions of the high-speed camera and the sliding table described in this invention. Figure 5 This is a schematic diagram of the slide table described in this invention.

[0032] 1. Housing; 2. Exhaust pipe; 3. Gas collection chamber; 4. High-strength bolt assembly; 5. Gas generation device; 6. First pressure sensor; 7. Solenoid valve; 8. Long screw assembly; 9. Power supply system; 10. Control system; 11. Data acquisition system; 12. Testing system; 13. Mounting part; 14. Connecting part; 15. Second pressure sensor; 16. Ground simulation testing device; 17. Slide table; 18. High-speed camera; 19. Slide table base; 20. Toothed belt; 21. Motion platform; 22. Servo motor; 23. Electric drive device; 24. Telescopic rod; 25. Support shaft; 26. Adapter section; 27. Solid propellant; 28. Nozzle. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0034] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Referring to the accompanying drawings, this embodiment of the invention discloses a test device for simulating the gas generation and attitude adjustment process of a ship emerging from the water in a ground-based simulation experiment. The ground simulation test device includes a housing 1, an exhaust pipe 2, a gas collection chamber 3, a high-strength bolt assembly 4, a gas generation device 5, a first pressure sensor 6, a solenoid valve 7, a second pressure sensor 15, a connecting part 14, a mounting part 13, a long screw assembly 8, a power supply system 9, a control system 10, a data acquisition system 11, a test system 12, an electric drive device 23, a telescopic rod 24, a support shaft 25, and a transition section 26. These are the components of the ground simulation test device 16. In addition, the ground simulation test device 16 also includes a slide table 17 and a high-speed camera 18 for simulating the water emergence experiment system. Because the gas collection chamber 3 is connected to the shell 1 as a whole and is not disassembled, the assembly starts from the gas generation device 5. First, the gas generation device 5 is installed onto the gas collection chamber 3 using the high-strength bolt assembly 4. Then, the mounting part 13 is installed onto the reserved position on the shell 1 and locked with bolts. Next, the power supply system 9, control system 10, and acquisition system 11 are installed onto the mounting part 13 using the long bolt assembly 8. Finally, the test system 12 is installed onto the bottom of the shell 1 with double-sided tape. When assembling the ground simulation test device 16, the relevant cables of each component need to be connected. After the assembly is completed, the ground simulation test device 16 is installed onto the slide table 17. The high-speed camera 18 is arranged around the slide table 17, and the ground test experiment simulating the water emergence, gas generation, and attitude adjustment of the aircraft can be carried out.

[0037] The purpose of this invention is to provide a testing device capable of simulating air generation and attitude adjustment of a vehicle emerging from water on the ground. This device can automatically adjust the ventilation flow rate, pressure, and ventilation angle in real time according to experimental conditions, thereby achieving the optimal air generation effect and laying a solid foundation for subsequent air generation and attitude adjustment experiments of vehicles emerging from water. The device is simple to assemble, has a short experimental cycle, and can conduct multiple repeatable experiments in a short period of time, thus possessing significant practical engineering value.

[0038] like Figure 1 As shown, a ground simulation test device for a waterborne vehicle experiment includes a shell 1, an exhaust pipe 2, an air collection chamber 3, a high-strength bolt assembly 4, an air generation device 5, a first pressure sensor 6, a solenoid valve 7, a second pressure sensor 15, a mounting part 13, a connecting part 14, a long screw assembly 8, a power supply system 9, a control system 10, a data acquisition system 11, and a testing system 12. The shell 1 is the base of the entire ground simulation test device, and other components are installed on it. The shell 1 is also the main load-bearing structure, which is made of high-strength materials and can withstand the impact from the air generation device 5 during operation. The corresponding materials need to meet the strength and heat resistance requirements and are selected according to actual needs. The exhaust pipe 2 is located at the circumferential edge of the gas collecting chamber 3. The ventilation angle of the exhaust pipe 2 is adjustable. It communicates with the interior of the gas collecting chamber 3 through the adapter section 26. The gas collecting chamber 3 is bolted to the housing 1 and is not usually disassembled. The main function of the gas collecting chamber 3 is to concentrate, buffer, and integrate high-temperature and high-pressure gas, and then discharge the high-temperature and high-pressure gas to the outside of the housing 1 through the exhaust pipe 2. There is a first pressure sensor 6 on the upper left and right sides of the gas collecting chamber 3. The cable of the first pressure sensor 6 is directly connected to the control system 10. It can test the pressure inside the gas collecting chamber 3 when gas is generated and transmit the measured data to the control system 10 in real time. The control system 10, through its internal logic judgment, issues a command to the solenoid valve 7 in the middle position of the lower part of the gas collecting chamber 3 to adjust the opening of the solenoid valve 7, thereby adjusting the ventilation flow and pressure of the exhaust pipe 2. The opening adjustment process of the solenoid valve 7 accompanies the entire ventilation process, so that the ventilation effect can always be kept at the best state. The gas collecting chamber 3 is specifically shaped like an inverted truncated cone. The lower part, which connects to the gas generating device 5, is set as a channel. The solenoid valve 7 is installed in the channel. The solenoid valve 7 controls the degree of opening and closing to control the gas entering the truncated cone. Under this cavity shape, the gas will diffuse to the periphery, be buffered and integrated, and then discharged, thereby achieving a stable discharge pressure.

[0039] The gas generating device 5 is located in the middle of the ground simulation test device 16 and is connected to the gas collecting chamber 3 via a high-strength bolt assembly 4. When the slide table 17 moves with the ground simulation test device 16, the gas generating device 5 receives a trigger command from the control system 10. Upon receiving the command, the gas generating device 5 starts working, generating high-temperature and high-pressure gas. The high-temperature and high-pressure gas breaks through the diaphragm between the gas generating device 5 and the gas collecting chamber 3 and reaches the gas collecting chamber 3. A second pressure sensor 15 is installed on the lower left side of the gas generating device 5. The cable of the second pressure sensor 15 is directly connected to the control system 10. The second pressure sensor 15 can measure the pressure of the high-temperature and high-pressure gas inside the gas generating device 5 when it is working and transmit the test data to the control system 10 for the control system 10 to make logical judgments to regulate the opening of the solenoid valve 7.

[0040] The connecting part 14 is the connecting plate, located in the upper middle position of the ground simulation test device 16, on the periphery of the gas generating device 5. It is connected to the base on the inner wall of the shell 1 by bolts. The connecting plate is made of high-strength material, which can improve the strength of the shell 1 and prevent the shell 1 from deforming when subjected to high temperature and high pressure gas impact.

[0041] Mounting section 13, also known as mounting plate, is located in the lower middle position of the ground simulation test device 16. It is connected to the base on the inner wall of the housing 1 by bolts, providing a mounting base for the power supply system 9, control system 10, and data acquisition system 11. The power supply system 9, control system 10, and data acquisition system 11 are connected to the mounting section 13 by a long screw assembly 8, which is located below the mounting section 13. The power supply system 9 provides power to the entire ground simulation test device 16 and is connected to the gas generation device 5, control system 10, data acquisition system 11, and test system 12 by cables. The power supply system 9 has ample power and can be fully charged before the experiment, allowing for multiple experiments without the need for recharging in a short period of time.

[0042] The control system 10 is the brain of the ground simulation test device 16. It contains control logic and is connected to the power supply system 9, the data acquisition system 11, the first pressure sensor 6, and the second pressure sensor 15 via cables. When the slide table 17 moves the ground simulation test device 16, the control system 10 receives motion data from the data acquisition system 11 and sends a trigger command to the gas generating device 5, initiating its operation. Simultaneously, the control system 10 receives pressure data from the high-temperature, high-pressure gas inside the gas generating device 5 and gas pressure data from the air vents on the left and right sides of the upper part of the gas collecting chamber 3. Based on this data, the control system's internal control logic makes judgments and then sends a real-time opening adjustment command to the solenoid valve 7 at the lower part of the gas collecting chamber 3. Adjusting the opening of the solenoid valve 7 adjusts the outlet flow and pressure of the exhaust pipe 2, thus achieving the desired ventilation effect. The entire adjustment process is automatic and continuously adjusted in real-time to maintain optimal ventilation performance.

[0043] The data acquisition system 11 is connected to the control system 10, the test system 12, and the power supply system 9 via cables. It is mainly responsible for receiving motion data from the ground simulation test device 16 measured by the test system 12, processing the data into signals that the control system 10 can recognize, and transmitting them to the control system 10 for its use.

[0044] The test system 12 is located at the bottom left side of the ground simulation test device 16 and is connected to the housing 1 by double-sided tape. It is connected to the acquisition system 11 and the power supply system 9 by cables. It is mainly responsible for testing the motion data of the ground simulation test device 16. The motion data mainly includes the acceleration and angular velocity of the test device. The obtained motion data is transmitted to the acquisition system 11, which processes it and then transmits it to the control system 10.

[0045] like Figure 2 The diagram shows a partially enlarged view of the exhaust pipe, including the exhaust pipe 2, the air collection chamber 3, the first pressure sensor 6, the electric drive device 23, the telescopic rod 24, the support shaft 25, and the adapter section 26. The exhaust pipe 2 is made of metal, and the adapter section 26 is made of rubber with a certain degree of elasticity. To ensure the normal rotation of the vent pipe, the adapter section has a certain margin. The exhaust pipe 2 and the adapter section 26 are glued together, and the other end of the adapter section 26 is connected to the air collection chamber 3 with glue. The electric drive device 23 is installed on the inner wall of the housing 1 with small bolts. The device is connected to the control system 10 via a cable, receives commands from the control system 10 and performs actions. The electric drive unit 23 is equipped with a telescopic rod 24, the other end of which is connected to the exhaust pipe 2 via a hinged connection. During the ground simulation experiment, the control system controls the electric drive unit 23 based on the gas production effect. The electric drive unit 23 drives the telescopic rod 24 to perform actions, and the telescopic rod 24 moves to extend and retract, causing the exhaust pipe 2 to rotate around the support shaft 25. The rotation angle range is 0-30 degrees, thereby adjusting the ventilation angle.

[0046] like Figure 3 As shown, the main components of the gas-generating device include a second pressure sensor 15, solid propellant 27, and a nozzle 28. The second pressure sensor 15 measures the internal pressure of the gas-generating device during ground simulation experiments, providing data support for the control system. The gas production rate can be adjusted by changing the amount of solid propellant 27, and the gas outlet flow rate and pressure can be adjusted by replacing the nozzle 28 with one of different diameters, thereby adjusting the gas production effect to meet the experimental requirements. The type of solid propellant 27 can be selected according to actual needs.

[0047] like Figure 4As shown, the ground-based simulated vehicle water emergence test system includes a ground simulation test device 16, a slide table 17, and a high-speed camera 18. The ground simulation test device 16 is connected to the slide table 17 by bolts. Its initial position is at the bottom of the slide table 17. During the experiment, it moves upward along the slide table 17 and stops when it reaches the top of the slide table 17. The movement speed of the slide table 17 can be set according to the actual working conditions during the experiment. High-speed cameras 18 are arranged around the ground simulation test device 16 to capture the entire gas generation process of the ground simulation test device 16 from all directions, allowing for a direct observation of the ventilation effect. Combined with the pressure data measured by the pressure sensor in the gas collection chamber, the ventilation effect can be quantitatively analyzed. Furthermore, the ventilation effect can be finely adjusted by adjusting the control logic of the control system 10 to achieve the goal of continuous improvement.

[0048] like Figure 5 As shown, the slide table includes a slide table base 19, a motion platform 21, a toothed belt 20, and a servo motor 22. During the experiment, the ground simulation test device 16 is mounted on the motion platform 21. Under the action of the servo motor 22, the motion platform 21 drives the ground simulation test device 16 to move along the toothed belt 20 from the starting point to the ending point to simulate the underwater motion process of the vehicle. The motion speed can be set according to the actual working conditions. The specific arrangement and connection method of the servo motor 22, the toothed belt 20, and the motion platform 21 are reasonably set according to the actual situation.

[0049] For locations requiring sealing, sealing structures should be designed based on structural characteristics and arranged reasonably according to actual conditions.

[0050] The air supply during the movement of a ground-based simulation test device was used to simulate the air supply and attitude adjustment process of a vehicle moving underwater. The control system within the ground simulation test system adjusted the air supply process in real time, primarily adjusting the air supply angle, flow rate, and pressure to achieve optimal air supply performance. A high-speed camera recorded the entire air supply process from all angles, allowing direct observation and providing supporting evidence for the quantitative analysis of the air supply effect. The entire experimental process was short and efficient, laying a solid technical foundation for subsequent real-world air supply and attitude adjustment experiments for vehicles emerging from the water. It achieved twice the result with half the effort, saving significant financial, time, and labor costs, and has high practical engineering significance.

[0051] The sensors, controllers, and control programs mentioned above are all existing technologies and will not be elaborated upon.

[0052] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A ground simulation test device for a waterborne surface test, characterized in that, include: The housing (1) is equipped with a gas generating device (5) for generating gas, and the gas generating device (5) is equipped with a second pressure sensor (15) for collecting internal pressure; the gas collecting chamber (3) has an inlet end connected to the outlet end of the gas generating device (5) and is equipped with a solenoid valve (7) inside, and has several exhaust ports on its peripheral wall, each exhaust port being connected to an exhaust pipe (2) with an adjustable exhaust angle; several first pressure sensors (6) are provided and distributed at several exhaust ports in the gas collecting chamber (3); the control system (10) is connected to the gas generating device (5), the first pressure sensor (6), the solenoid valve (7), the second pressure sensor (15) and / or the power supply system (9); Each air outlet of the gas collection chamber (3) is connected to the corresponding exhaust pipe (2) through a transition section (26). The transition section (26) is made of deformable material. The exhaust pipe (2) is rotatably connected to the housing (1) at one end near the transition section (26), and the angle at the other end is adjusted by an angle adjustment component. The angle adjustment component is a linear drive component, with the movable end connected to the exhaust pipe (2) and the fixed end connected to the inner wall of the housing (1); The linear drive assembly includes an electric drive unit (23) and a telescopic rod (24) driven by the electric drive unit (23) to perform an action.

2. The ground simulation test device for a water-emergence experiment of a ship as described in claim 1, characterized in that: The gas generating device (5) is equipped with a solid propellant (27) connected to the control system (10), and a nozzle (28) is provided at the outlet end.

3. The ground simulation test device for a water-emergence experiment of a ship as described in claim 1, characterized in that: The gas generating device (5) is fixed inside the housing (1) by the connecting part (14).

4. The ground simulation test device for a water-emergence experiment of a ship as described in claim 1, characterized in that: Two pressure sensors (6) are provided and arranged in a circumferentially symmetrical manner in the gas collection chamber (3).

5. A ground simulation test device for a water-emergence experiment of a vehicle according to any one of claims 1-4, characterized in that, The device also includes a data acquisition system (11) and a testing system (12). The data acquisition system (11) is used to acquire the motion data of the device measured by the testing system (12) and transmit it to the control system (10) to control the action of the device. Both the data acquisition system (11) and the testing system (12) are connected to the power supply system (9).

6. The ground simulation test device for a water-emergence experiment of a ship as described in claim 5, characterized in that, The device also includes a slide (17), the housing (1) is slidably mounted on the slide (17), and a number of high-speed cameras (18) for recording the motion state of the housing (1) are arranged along the axial direction of the slide (17).

7. The ground simulation test device for a water-emergence experiment of a ship as described in claim 6, characterized in that: The slide (17) includes a slide base (19), a toothed belt (20), a motion platform (21) and a servo motor (22). The motion platform (21) is slidably arranged on the slide base (19). The rotating end of the servo motor (22) is connected to the toothed belt (20), and the toothed belt (20) is connected to the motion platform (21).

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