A scaled model test system for hydrodynamics of a cross-medium aircraft in a hypergravity environment

Abstract

The present invention relates to the technical field of simulation test systems, and specifically to a cross-medium aircraft hydrodynamic scale model test system in a hypergravity environment, comprising: a cylinder, a centrifuge is arranged inside the cylinder, the centrifuge comprises a support structure, a driving mechanism, and a swivel arm; a steering shaft is arranged on the support structure, and the driving mechanism is arranged on the support structure; a swivel arm is arranged on the support structure and connected to the driving mechanism, a counterweight bucket is arranged at one end of the swivel arm, and a hanging basket water tank is arranged at the other end of the swivel arm; a wave maker is arranged in the hanging basket water tank; an electromagnetic rail gun is arranged on the swivel arm. The cross-medium scale test of this test system breaks through the conventional similarity theory system in a hypergravity environment, establishes a new test principle, eliminates the contradiction between the velocity scaling of structural mechanics and fluid mechanics, solves the conflict between the decompression cavitation number simulation and the gas density coefficient simulation, and reduces the minimum allowable scale ratio. β A value of 0 increases the amount of gas allowed to be dissolved in water and allows the model test to ignore the effect of surface tension.

Description

Technical Field

[0001] The invention relates to the technical field of simulation test systems, and in particular to a hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment. Background Art

[0002] The multiphase coupling mechanism of cross-media water entry and exit is extremely complex. Due to the high economic and time costs of 1:1 real-scale experiments, it is impossible to obtain sufficient effective samples. Currently, the cross-media basic research and equipment development mostly use scaled-down water entry and exit tests as a technical support means. Therefore, the scaled-down similarity theory and experimental technology involved in the cross-media aircraft water entry and exit problems that relate the relationship between the prototype and the model are extremely critical.

[0003] Cross-media water entry and exit involve complex multidisciplinary cross-disciplinary issues such as thermodynamic processes, material phase change processes, kinetic processes, impact dynamics processes, structural safety, material properties, motion control, etc. To conduct scaled-down tests, we must first study the similarity of the above characteristics. The most advanced decompression pool test system for studying cross-media water entry and exit problems can achieve a certain degree of simulation and reproduction of prototype test phenomena in model tests on the basis of ensuring the similarity of cavitation numbers and Froude numbers.

[0004] However, the existing cross-medium scale-down model tests are constrained by the conventional gravity conditions on Earth, which means that the cross-medium scale-down similarity law based on the decompression pool can only follow the principle of equality of stress and pressure. The simulation capability and accuracy of the scale-down model test are subject to multiple similarity criterion incompatibility problems and cannot get rid of the existing similarity theory system. This is one of the key factors restricting the development of the similarity theory system and related experimental technologies. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the cross-medium scale model test in the prior art is constrained by the conventional gravity conditions on the earth, which makes the cross-medium scale similarity law based on the decompression pool only follow the principle of equality of stress and pressure, and the simulation ability and accuracy of the scale model test are subject to the problem of incompatibility of multiple similarity criteria, thereby providing a cross-medium aircraft hydrodynamic scale model test system in a hypergravity environment.

[0006] In order to solve the above technical problems, the present invention provides a scaled model test system for hydrodynamics of a cross-medium aircraft in a hypergravity environment, comprising: a cylinder, in which a centrifuge is arranged, and the centrifuge comprises a supporting structure, a driving mechanism, and a rotating arm; a steering shaft is arranged on the supporting structure, and the driving mechanism is arranged on the supporting structure; a rotating arm is arranged on the supporting structure and connected to the driving mechanism, a counterweight bucket is arranged at one end of the rotating arm, and a hanging basket water tank is arranged at the other end of the rotating arm; a wave maker is arranged in the hanging basket water tank; and an electromagnetic rail gun is arranged on the rotating arm.

[0007] Furthermore, the driving mechanism includes a motor and a reducer, and the motor and the reducer are both arranged in the supporting structure and connected to the rotating arm.

[0008] Furthermore, a water entry model ejection inlet and a water exit model ejection device are provided on the hanging basket water tank, and the water entry model ejection inlet and the water exit model ejection device are located on the same straight line.

[0009] Furthermore, the hanging basket water tank includes: a water tank steel frame structure in a cubic structure; a plurality of glass windows arranged on the water tank steel frame structure, the plurality of glass windows enclose a sealing structure, and the wave maker is arranged in the sealing structure.

[0010] Furthermore, it also includes a data acquisition system, which includes an internal measurement system and an external measurement system. The internal measurement system is used to measure the surface pressure distribution of the electromagnetic railgun and the impact environment of the local assessment point, and the external measurement system is used to measure the cross-medium cavitation development process and movement trajectory of the electromagnetic railgun.

[0011] Furthermore, the wave machine includes a servo system and a wave height measurement system, as well as a wave-making mechanical part, wherein the servo system is used to provide power, the wave-making mechanical part generates controllable waves, and the wave height measurement system is used to accurately measure the wave height within a specified range.

[0012] Furthermore, it also includes a protection and salvage system, which is used to salvage the projectile of the electromagnetic railgun that has fallen into the water.

[0013] Furthermore, it also includes a central control monitoring system, which is connected to the driving mechanism and the wave maker, the data acquisition system, and the protection and salvage system.

[0014] Furthermore, the support structure includes: a bracket, arranged in the cylinder; a rotating shaft, arranged on the bracket, the steering shaft is located between the rotating shaft and the bracket, the driving mechanism is arranged in the rotating shaft, and the rotating arm is installed in the rotating shaft.

[0015] Furthermore, a slot body is provided on the rotating shaft, and the rotating arm is clamped on the slot body.

[0016] The technical solution of the present invention has the following advantages:

[0017] The invention provides a hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment, comprising: a cylinder, wherein a centrifuge is arranged in the cylinder, wherein the centrifuge comprises a supporting structure, a driving mechanism, and a rotating arm; a steering shaft is arranged on the supporting structure, wherein the driving mechanism is arranged on the supporting structure; a rotating arm is arranged on the supporting structure and connected to the driving mechanism, wherein a counterweight bucket is arranged at one end of the rotating arm, and a hanging basket water tank is arranged at the other end of the rotating arm; a wave maker is arranged in the hanging basket water tank; and an electromagnetic rail gun is arranged on the rotating arm.

[0018] By arranging a centrifuge in the cylinder, and the centrifuge includes a support structure, the support structure provides a support position for the driving mechanism and the steering shaft. In addition, the driving mechanism can drive the rotating arm, the counterweight bucket and the hanging basket water tank arranged on the rotating arm to rotate, so that the hanging basket water tank is in a hypergravity environment; when a wave maker is needed to make waves, the wave maker can be driven to make waves for the water in the hanging basket water tank, and then the electromagnetic rail gun can be started to penetrate the hanging basket water tank and pass out along the direction of the rotating arm, so as to test the aircraft in a hypergravity environment.

[0019] The cross-medium scaled model test system of the cross-medium aircraft hydrodynamics in the hypergravity environment breaks through the conventional similarity theory system, establishes a new test principle, eliminates the contradiction between the velocity scale of structural mechanics and fluid mechanics, solves the conflict between the simulation of decompression cavitation number and the simulation of gas density coefficient, and reduces the minimum allowable scale ratio. β A value of 0 increases the amount of gas allowed to be dissolved in water and allows the model test to ignore the effect of surface tension.

[0020] The hydrodynamic scale model test system of the hypergravity environment cross-medium aircraft can realize high-speed water entry and load reduction, and can carry out multiple model cross-medium exit and entry tests in the hypergravity environment of centrifugal acceleration, and can test the water entry overload information, the surface pressure distribution of the water entry projectile, the impact environment parameters of the internal assessment points of the water entry projectile, the water entry trajectory parameters and other parameters. The coupling test of the degree of freedom motion, that is, the structural dynamic response and the flow field are all effective.

[0021] The scaled model test system for hydrodynamics of cross-medium aircraft in hypergravity environment can realize the conversion between hypergravity and microgravity experimental environments. It innovatively uses centrifuges to simulate microgravity environments, and can carry out hydrodynamic tests of cross-medium aircraft in microgravity environments. It can also be conveniently combined with the hypergravity environment test system and quickly switch between the two test states, saving a lot of cost and time.

[0022] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment provided by the present invention;

[0025] Figure 2 A three-dimensional diagram of a hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment provided by the present invention;

[0026] Figure 3 A schematic diagram of the structure of a hanging basket water tank of a hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment provided by the present invention;

[0027] Figure 4 A schematic structural diagram of a wave maker for a hydrodynamic scale model test system of a cross-medium aircraft in a hypergravity environment provided by the present invention.

[0028] Description of reference numerals:

[0029] 1. Cylinder; 2. Centrifuge; 3. Support structure; 4. Steering shaft; 5. Swivel arm; 6. Counterweight bucket; 7. Hanging basket water tank; 8. Wave maker; 9. Electromagnetic rail gun; 10. Water entry model ejection inlet; 11. Water exit model ejection device; 12. Water tank steel frame structure; 13. Glass window; 14. Bracket; 15. Rotating shaft; 16. Tank body. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0033] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The disclosure below provides many different embodiments or examples to realize different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0035] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0036] See also Figures 1 to 4 As shown, the present invention provides a scaled model test system for hydrodynamics of a cross-medium aircraft in a hypergravity environment, comprising: a cylinder 1, wherein a centrifuge 2 is arranged inside the cylinder 1, wherein the centrifuge 2 comprises a support structure 3, a driving mechanism, and a rotating arm 5; a steering shaft 4 is arranged on the support structure 3, and the driving mechanism is arranged on the support structure 3; a rotating arm 5 is arranged on the support structure 3 and connected to the driving mechanism, a counterweight bucket 6 is arranged at one end of the rotating arm 5, and a hanging basket water tank 7 is arranged at the other end of the rotating arm 5; a wave maker 8 is arranged in the hanging basket water tank 7; and an electromagnetic rail gun 9 is arranged on the rotating arm 5.

[0037] By arranging a centrifuge 2 in the cylinder 1, and the centrifuge 2 includes a support structure 3, the support structure 3 provides a support position for the driving mechanism and the steering shaft 4. In addition, the driving mechanism can drive the rotating arm 5, the counterweight bucket 6 and the hanging basket water tank 7 arranged on the rotating arm 5 to rotate, so that the hanging basket water tank 7 is in a hypergravity environment; when the wave maker 8 is required to generate waves, the wave maker 8 can be driven to generate waves for the water in the hanging basket water tank 7, and then the electromagnetic rail gun 9 is activated, and the electromagnetic rail gun 9 penetrates the hanging basket water tank 7 along the direction of the rotating arm 5 and passes out, so as to test the aircraft in a hypergravity environment.

[0038] The cross-medium scaled test of the hydrodynamic scaled model test system of the cross-medium aircraft in a hypergravity environment breaks through the conventional similarity theory system and establishes a new test principle in a hypergravity environment. It eliminates the contradiction between the velocity scales of structural mechanics and fluid mechanics, solves the conflict between the decompression cavitation number simulation and the gas density coefficient simulation, reduces the value of the minimum allowable scale ratio, increases the allowable amount of gas dissolved in water, and allows the model test to ignore the influence of surface tension.

[0039] The hydrodynamic scale model test system of the hypergravity environment cross-medium aircraft can realize high-speed water entry and load reduction, and can carry out multiple model cross-medium exit and entry tests in the hypergravity environment of centrifugal acceleration, and can test the water entry overload information, the surface pressure distribution of the water entry projectile, the impact environment parameters of the internal assessment points of the water entry projectile, the water entry trajectory parameters and other parameters. The coupling test of the degree of freedom motion, that is, the structural dynamic response and the flow field are all effective.

[0040] The cross-medium aircraft hydrodynamic scale model test system in a hypergravity environment can realize the conversion between hypergravity and microgravity experimental environments. It innovatively uses centrifuge 2 to simulate the microgravity environment, and can carry out hydrodynamic tests on cross-medium aircraft in a microgravity environment. It can also be conveniently combined with the hypergravity environment test system and quickly switch between the two test states, saving a lot of cost and time.

[0041] The supergravity field refers to the centrifugal acceleration field when the centrifuge is running. Since the centrifugal acceleration field at this time is n times the gravitational acceleration field, it is called the supergravity field.

[0042] The rotating arm 5 is rotatably mounted on the supporting structure 3, and the supporting structure 3 is provided with a rotating shaft which can convert the rotating plane of the rotating arm 5 from a horizontal plane to a vertical plane, so that the hypergravity environment cross-medium aircraft hydrodynamic scale model test system can generate a hypergravity environment and a microgravity environment when necessary.

[0043] The swing arm 5 adopts an asymmetric arm structure, with a hanging basket water tank 7 at one end of the swing arm 5 and a counterweight bucket 6 at the other end, which is only used to balance the weight. In the non-working state, under the action of gravity, the hanging basket water tank 7 is in a drooping state. When the swing arm 5 rotates and accelerates until n times of centrifugal acceleration is generated, the hanging basket water tank 7 is in a horizontal state. At this time, the environment in the water tank is transformed into a hypergravity environment under the action of centrifugal force, and is in a hypergravity field, providing a stable hypergravity environment for subsequent experiments.

[0044] The electromagnetic rail gun 9 is installed on the rotating arm 5. The principle is to use the Ampere force F=BIL (B is the magnetic induction intensity, I is the current size, and L is the length of the wire cutting the magnetic flux line) to realize the accelerated movement of the model within the limited track length. After the centrifuge 2 operates to form the required supergravity field and the wave maker 8 works to produce the required sea conditions, the projectile is launched into the hanging basket water tank 7 for specific tests. After the projectile is separated from the electromagnetic rail gun 9, there will be no external force to provide it with radial acceleration in the radial direction that matches the radial position. That is, at this time, in the radial outward direction, the projectile will not be affected by the so-called "gravity" in this direction when entering the water.

[0045] The steering shaft 4 can convert the rotation plane of the rotating arm 5 from a horizontal plane to a plumb plane, so that the hypergravity environment cross-medium aircraft hydrodynamic scale model test system can generate a hypergravity environment, and can also generate a microgravity environment when necessary. When rotating on a vertical rotation plane, in each rotation cycle, when the hanging basket water tank 7 rotates to the top of the plumb bob, the environment inside the hanging basket water tank 7 is converted into a microgravity environment, which can realize the simulation of the microgravity environment and carry out relevant cross-medium water entry and exit tests.

[0046] In some embodiments, the driving mechanism includes a motor and a reducer, and the motor and the reducer are both arranged in the support structure 3 and connected to the rotating arm 5. That is, the rotating arm 5 is driven to rotate by the motor and the reducer, and then the hanging basket water tank 7 is driven to rotate, so that the hanging basket water tank 7 can rotate in a hypergravity environment.

[0047] The motor uses a high-power, high-voltage three-phase asynchronous motor and is fixed horizontally. The motor adopts the internationally popular box-type structure. The base, end cover and other parts are welded with steel plates. It is light in weight and has good rigidity. By removing the top cover or cooler, you can observe or touch the inside of the motor, which is convenient for installation and maintenance.

[0048] In some embodiments, the hanging basket water tank 7 is provided with a water entry model ejection entrance 10 and a water exit model ejection device 11, and the water entry model ejection entrance 10 and the water exit model ejection device 11 are located on the same straight line; this setting method can ensure that the electromagnetic railgun 9 rushes out of the rotating arm 5 smoothly, quickly penetrates the hanging basket water tank 7, and rushes out of the hanging basket water tank 7.

[0049] In this embodiment, the hanging basket water tank 7 includes: a water tank steel frame structure 12, which is a cubic structure; a glass window 13, which has multiple glass windows 13 and is arranged on the water tank steel frame structure 12. The multiple glass windows 13 form a sealed structure, and the wave maker 8 is arranged in the sealed structure.

[0050] Among them, the setting of the water tank steel frame structure 12 effectively ensures the overall structure of the hanging basket water tank 7, and the three-dimensional structure of the steel frame structure increases the firmness of the water tank steel frame structure 12.

[0051] At the same time, a glass window 13 is arranged outside the water tank steel frame structure 12 to increase the visibility of the hanging basket water tank 7. Specifically, the glass window 13 is a high-strength transparent bulletproof glass transparent window.

[0052] In some embodiments, the hypergravity environment cross-medium aircraft hydrodynamic scale model test system also includes a data acquisition system, which includes an internal measurement system and an external measurement system. The internal measurement system is used to measure the surface pressure distribution of the electromagnetic railgun 9 and the impact environment of the local assessment point, and the external measurement system is used to measure the cross-medium cavitation development process and movement trajectory of the electromagnetic railgun 9.

[0053] The data acquisition system obtains parameters such as the surface pressure distribution of the electromagnetic railgun 9 and the impact environment of the local test point through the internal measurement system built into the electromagnetic railgun 9 projectile, and uses a static high-speed camera and a high-speed camera fixed on the water tank to capture the cross-medium cavitation development process and the trajectory of the vehicle movement. Its testing capability is determined based on factors such as the rotation speed of the centrifuge 2 during the experiment.

[0054] The internal measurement system is equipped with an inertial group sensor at the head of the missile body, and data acquisition instruments are installed at various measuring points inside the missile body;

[0055] The external measurement system adopts the optical side method, using a static high-speed camera and a high-speed camera fixed on the water tank to capture the cross-medium cavitation development process and the trajectory of the vehicle movement. The external static high-speed camera is placed outside the rotation radius of the centrifuge 2, and a telephoto lens is added to the high-speed camera to focus on the water entry movement plane of the hanging basket water tank 7 model.

[0056] For the low-speed water entry and exit problems, the high-speed camera frame rate is set to an integer multiple of the centrifuge 2 speed to capture the cross-medium movement of the centrifuge 2 each time it rotates to the focal plane position. For the high-speed water entry and exit problems, the position of the centrifuge 2 cantilever during the main cross-medium water entry process is calculated, the centrifuge 2 focal plane is arranged at the corresponding water tank position, the high-speed camera frame rate is increased, and the cross-medium movement process of the centrifuge 2 model is captured at the moment of rotation to the focal plane position.

[0057] In some embodiments, the wave machine 8 includes a servo system and a wave height measurement system, as well as a wave-making mechanical part, wherein the servo system is used to provide power, the wave-making mechanical part generates controllable waves, and the wave height measurement system is used to accurately measure the wave height within a specified range.

[0058] The main function of the wave maker 8 is to generate controllable waves when the centrifuge 2 is running and the experimental water tank is moving in a circular motion. The wave maker 8 is required to not only meet the scaled-down wave requirements, but also generate stable standing waves in the test section waters under the action of a large centrifugal force.

[0059] In some embodiments, the supergravity environment cross-medium aircraft hydrodynamic scale model test system further includes a protection salvage system, which is used to salvage the projectile of the electromagnetic railgun 9 that has fallen into the water.

[0060] In some embodiments, the hypergravity environment cross-medium aircraft hydrodynamic scale model test system further includes a central control monitoring system, which is connected to the driving mechanism and the wave maker 8, the data acquisition system, and the protection and salvage system.

[0061] The central control monitoring system mainly realizes the monitoring and control of various system parameters of the whole test process: the detection of the balance state of the rotating wall is more capable. When the unbalanced force exceeds 5% of the maximum capacity of the centrifuge 2, the equipment will be shut down for protection; air humidity, temperature monitoring, leakage monitoring; the whole test system is monitored and controlled, and the equipment status video is stored.

[0062] In some optional embodiments, the supporting structure 3 includes: a bracket 14, which is disposed in the cylinder 1; a rotating shaft 15, which is disposed on the bracket 14, the steering shaft 4 is located between the rotating shaft 15 and the bracket 14, the driving mechanism is disposed in the rotating shaft 15, and the rotating arm 5 is installed in the rotating shaft 15.

[0063] The arrangement of the bracket 14 provides an installation position for the rotating shaft 15 and the rotating shaft 15. At the same time, it is convenient for the installation of the driving mechanism.

[0064] Specifically, a groove body 16 is provided on the rotating shaft 15, and the rotating arm 5 is clamped on the groove body 16. Therefore, it is convenient to install the rotating arm 5 in the groove body 16, that is, the groove body 16 fixes and limits the rotating arm 5.

[0065] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment, characterized in that: include: A cylinder body, in which a centrifuge is arranged, the centrifuge comprises a supporting structure, a driving mechanism, and a rotating arm; a steering shaft is arranged on the supporting structure, and the driving mechanism is arranged on the supporting structure; The rotating arm is arranged on the supporting structure and connected to the driving mechanism. A counterweight bucket is arranged at one end of the rotating arm, and a hanging basket water tank is arranged at the other end of the rotating arm. The wave maker is installed in the hanging basket water tank; The electromagnetic rail gun is mounted on a rotating arm; The driving mechanism includes a motor and a reducer, both of which are arranged in the supporting structure and connected to the rotating arm; The water tank of the hanging basket is provided with a water entry model ejection entrance and a water exit model ejection device, which are located on the same straight line to ensure that the electromagnetic railgun can rush out from the rotating arm smoothly, quickly penetrate the hanging basket water tank, and rush out from the hanging basket water tank; It also includes a data acquisition system, which includes an internal measurement system and an external measurement system. The internal measurement system is used to measure the surface pressure distribution of the electromagnetic railgun and the impact environment of the local assessment point, and the external measurement system is used to measure the cross-medium cavitation development process and motion trajectory of the electromagnetic railgun; The supporting structure includes: A bracket is arranged in the cylinder; A rotating shaft is arranged on the bracket, a steering shaft is located between the rotating shaft and the bracket, a driving mechanism is arranged in the rotating shaft, and a rotating arm is installed in the rotating shaft; The steering axis can convert the rotation plane of the rotating arm from a horizontal plane to a plumb plane, so that the test system can produce a hypergravity environment, and can also produce a microgravity environment when necessary. When rotating on a vertical rotation plane, in each rotation cycle, when the hanging basket water tank rotates to the top of the plumb bob, the environment inside the hanging basket water tank is converted into a microgravity environment, thereby realizing the simulation of a microgravity environment.

2. The hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment according to claim 1 is characterized in that: The hanging basket water tank includes: The water tank is a steel frame structure with a cubic structure; The glass windows are provided in plurality and are arranged on the steel frame structure of the water tank. The plurality of glass windows are enclosed to form a sealed structure, and the wave maker is arranged in the sealed structure.

3. The hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment according to claim 1, characterized in that: The wave machine includes a servo system, a wave height measurement system, and a wave-making mechanical part. The servo system is used to provide power, the wave-making mechanical part generates controllable waves, and the wave height measurement system is used to accurately measure the wave height within a specified range.

4. The hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment according to claim 3 is characterized in that: It also includes a protective salvage system, which is used to salvage the projectile of the electromagnetic railgun that has fallen into the water.

5. The hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment according to claim 4, characterized in that: It also includes a central control monitoring system, which is connected to the driving mechanism, the wave maker, the data acquisition system, and the protection and salvage system.

6. The hydrodynamic scale model test system for a cross-medium aircraft in a hypergravity environment according to claim 1, characterized in that: A slot body is arranged on the rotating shaft, and a rotating arm is clamped on the slot body.

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