Continuous bomb release device and method for testing continuous entry of a projectile into water in a reduced pressure environment

Abstract

The application provides a continuous bomb launching device and a device and method for continuously releasing bombs into water in a decompression environment, and belongs to the technical field of cross-medium water entry test devices. In the continuous bomb launching device, a moving slide is fixedly arranged on a support, a bomb releasing structure includes a supporting shell, a rotating wheel and a driving member, the supporting shell is connected with the moving slide, the moving slide can drive the bomb releasing structure to move in a vertical direction, the rotating wheel is rotationally arranged on the supporting shell, the driving member is fixedly arranged on the supporting shell, the driving member is connected with the rotating wheel, the driving member can drive the rotating wheel to rotate, the rotating wheel is provided with a plurality of bomb accommodating cavities, the bomb accommodating cavities are arranged at intervals in a circumferential direction of the rotating wheel, and the supporting shell is provided with a bomb ejection opening below the bomb accommodating cavities. When the bomb accommodating cavities are communicated with the bomb ejection opening, the bombs in the bomb accommodating cavities are separated from the bomb accommodating cavities and pass through the bomb ejection opening. After one-time decompression of the decompression tank, the continuous and controllable release of a plurality of bombs into water can be realized.

Description

Technical Field

[0001] This invention belongs to the technical field of cross-medium water immersion test device, and in particular relates to a continuous bombing device and a test device and method for continuous water immersion of projectiles under decompression environment. Background Technology

[0002] In practical applications, airdropped equipment and medium-to-low speed-velocity vehicles undergo a cross-medium water entry process when hitting underwater targets. During water entry, these devices are subject to the coupled influence of various complex factors, including transient impact loads, hydrodynamics, cavitation, and other factors. To reveal the mechanisms by which these factors affect the projectile's motion, water entry tests can be conducted to investigate the underlying patterns and provide technical support for solving practical application challenges. Previous studies have shown that gas environment density has a significant impact on the cavitation evolution of structures during water entry. Water entry tests within depressurization tanks are an important method for studying this issue. However, existing depressurization water entry test procedures typically involve one depressurization cycle followed by one water entry test, after which the tank is opened and the projectile is placed inside. Since each water entry test requires depressurization within the tank, this method significantly reduces testing efficiency when conducting a large number of depressurization water entry tests. Therefore, there is an urgent need for a device and method that can perform multiple water entry tests under a single depressurization condition. Summary of the Invention

[0003] In view of this, in order to solve the problem that the existing decompression water immersion test process usually involves one decompression and one water immersion test, that is, each water immersion test requires a decompression operation inside the tank, which greatly reduces the test efficiency when conducting a large number of decompression water immersion tests, this invention proposes a continuous bombing device and a device and method for continuous water immersion test of projectiles under decompression environment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A continuous bombing device, comprising:

[0006] support;

[0007] A motion slide, wherein the motion slide is fixedly mounted on the bracket;

[0008] The projectile release structure includes a supporting shell, a rotating wheel, and a driving component. The supporting shell is connected to a motion slide, which drives the projectile release structure to move vertically. The rotating wheel is rotatably mounted on the supporting shell, and the driving component is fixedly mounted on the supporting shell and connected to the rotating wheel. The driving component drives the rotating wheel to rotate. The rotating wheel has multiple projectile receiving cavities, which are spaced apart along the circumference of the rotating wheel. The supporting shell has a projectile discharge opening at its lower part. The projectile discharge opening is configured such that when the projectile receiving cavity communicates with the projectile discharge opening and the communication is sufficient for a projectile to pass through, the projectile in the projectile receiving cavity detaches from the projectile receiving cavity and passes through the projectile discharge opening.

[0009] As a preferred embodiment of the aforementioned continuous bombing device, the continuous bombing device further includes a guide rail and a trolley. The guide rail is fixedly mounted on the bracket, and the trolley is fixedly mounted on the supporting housing. The trolley is slidably mounted on the guide rail, and the guide rail extends in the vertical direction.

[0010] As a preferred embodiment of the aforementioned continuous bombing device, the continuous bombing device further includes a motor controller, wherein the driving component is a stepper motor, the motor controller is connected to the stepper motor, and the motor controller can control the start, stop, and speed of the stepper motor.

[0011] As a preferred embodiment of the aforementioned continuous bomb-throwing device, an upper connecting shaft is provided above the rotating wheel, and the output end of the stepper motor is connected to the upper connecting shaft via a coupling.

[0012] As a preferred embodiment of the aforementioned continuous bomb-throwing device, the supporting shell includes an upper plate, a lower plate, a front side plate, and a rear side plate. The upper plate, the front side plate, the lower plate, and the rear side plate are sequentially fixedly connected by angle brackets. The rotating wheel is located between the upper plate and the lower plate, and between the front side plate and the rear side plate. The moving slide is connected to the rear side plate. The driving component is connected to the upper plate. The bomb-throwing opening is located on the lower plate.

[0013] As a preferred embodiment of the aforementioned continuous bomb-throwing device, a lower connecting shaft is provided below the rotating wheel, a connecting boss is fixedly provided on the lower plate, the connecting boss is provided with a connecting groove, and the lower connecting shaft rotatably passes through the connecting groove.

[0014] As a preferred embodiment of the aforementioned continuous bomb-throwing device, the bomb ejection opening is fan-shaped.

[0015] The present invention also provides a test device for continuous water immersion of projectiles under depressurization conditions, including the above-mentioned continuous bombing device, and further including a depressurization tank and a vacuum pump. The vacuum pump is connected to the depressurization tank and can draw gas from the depressurization tank to achieve a depressurization environment inside the depressurization tank. The continuous bombing device is fixedly installed inside the depressurization tank.

[0016] As a preferred embodiment of the above-mentioned test device for continuous water immersion of projectiles under decompression conditions, the decompression tank is equipped with an observation window.

[0017] This invention further provides a method for continuous water immersion testing of a projectile under decompression conditions, employing the aforementioned continuous water immersion testing apparatus for a projectile under decompression conditions, comprising:

[0018] S1: Install multiple projectiles into the multiple projectile receiving cavities of the rotating wheel;

[0019] S2: Adjust the motion slide to move the supporting shell to the required position according to the required projectile drop height;

[0020] S3: The drive unit drives the rotating wheel to rotate at a set angle, so that the projectile receiving cavity containing the projectile is connected to the projectile exit opening and the connection is large enough for the projectile to pass through. Under the action of gravity, the projectile falls vertically.

[0021] S4: Determine if projectile release is still required;

[0022] If so, return to S3;

[0023] If not, the projectile is released.

[0024] Compared with the prior art, the beneficial effects of the continuous bombing device and the continuous water immersion test device and method for projectiles under decompression environment provided by the present invention are as follows:

[0025] 1. This invention provides a continuous bombing device and a device and method for continuous water immersion testing of projectiles under depressurization conditions. In the continuous bombing device, a rotating wheel has multiple projectile receiving cavities, each capable of holding one projectile. When a projectile-containing cavity is not connected to the projectile opening, the projectile is blocked by the supporting shell and remains within the cavity. When the driving component rotates the rotating wheel, and the projectile-containing cavity of the wheel connects to the projectile opening with sufficient space for the projectile to pass through, the projectile falls vertically under gravity, detaches from the cavity, and passes through the opening, thus completing one projectile release. Without changing the depressurization environment, if another water immersion test is required, the driving component can rotate the rotating wheel again. When the next projectile receiving cavity connects to the projectile opening with sufficient space for the projectile to pass through, the projectile in that cavity falls vertically, completing another projectile release. This cycle continues until no further projectile release is needed. This continuous bomb-dropping device enables the continuous and controllable release of multiple bombs into water under the same decompression environment—that is, after one decompression in the decompression tank, without opening the decompression tank. This solves the problems of low efficiency and inconsistent pressure control caused by the need for multiple decompression operations in existing technologies. Furthermore, the device has a compact structure, convenient bomb loading, safe, simple, and reliable operation, and a single set of equipment can be reused repeatedly, resulting in low cost. While achieving the desired effect, it significantly improves testing efficiency and is suitable for various site applications.

[0026] 2. The present invention provides a continuous bombing device and a test device and method for continuous water immersion of projectiles under decompression conditions. In the continuous bombing device, the moving slide can drive the projectile release structure to move in the vertical direction. The height of the projectile release structure can be adjusted according to the required projectile release height to achieve variable speed water immersion of the projectile.

[0027] 3. This invention provides a continuous bombing device and a test device and method for continuous water immersion of projectiles under decompression conditions. The continuous bombing device can, according to test requirements, design the size, number, and position of the projectile release openings and the size, number, and position of the projectile receiving cavities on the rotating wheels to achieve the effect of multiple projectiles entering water in series or parallel under decompression conditions. It can also adjust the height of the release device to achieve variable-velocity water immersion of the projectiles. For example, by changing the size of the projectile receiving cavity, it can accommodate projectiles of different diameters; or by changing the number of projectile openings, two or more projectile openings can be designed to simultaneously connect to two or more projectile receiving cavities, allowing two or more projectiles to enter water together. Furthermore, multiple rotating wheels and supporting shells can be designed according to projectile release requirements, and the required rotating wheels and supporting shells can be directly replaced during testing. Attached Figure Description

[0028] 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:

[0029] Figure 1 This is a schematic diagram of the continuous bombing device provided in a specific embodiment of the present invention;

[0030] Figure 2 This is an exploded structural diagram of the continuous bombing device provided in a specific embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the rotating wheel of the continuous bombing device provided in a specific embodiment of the present invention from a first perspective.

[0032] Figure 4 This is a schematic diagram of the rotating wheel of the continuous bombing device provided in a specific embodiment of the present invention from a second perspective;

[0033] Figure 5 This is a partial structural schematic diagram of the continuous bomb-dropping device provided in a specific embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the upper plate of the continuous bomb-throwing device provided in a specific embodiment of the present invention;

[0035] Figure 7 yes Figure 6 Sectional view along AA;

[0036] Figure 8 yes Figure 7 A magnified view of point C;

[0037] Figure 9 This is a schematic diagram of the structure of the lower plate of the continuous bomb-throwing device provided in a specific embodiment of the present invention;

[0038] Figure 10 yes Figure 9 A cross-sectional view along BB;

[0039] Figure 11 yes Figure 10 Enlarged view of point D;

[0040] Figure 12 This is a schematic diagram of the structure of the projectile continuous water immersion test device under decompression environment provided in a specific embodiment of the present invention. Figure 1 ;

[0041] Figure 13 This is a schematic diagram of the structure of the projectile continuous water immersion test device under decompression environment provided in a specific embodiment of the present invention. Figure 2 .

[0042] In the picture:

[0043] 1. Bracket;

[0044] 2. Motion slide;

[0045] 3. Projectile release structure; 31. Drive component; 32. Support shell; 33. Rotary wheel; 321. Upper plate; 322. Front side plate; 323. Lower plate; 324. Rear side plate; 331. Projectile receiving cavity; 332. Upper connecting shaft; 333. Lower connecting shaft;

[0046] 4. Guide rail;

[0047] 5. Pulley;

[0048] 6. Projectile ejection opening;

[0049] 7. Couplings;

[0050] 8. Connecting slot;

[0051] 9. Connecting holes;

[0052] 100. Pressure reducing vessel; 101. Observation window. Detailed Implementation

[0053] 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.

[0054] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0057] See Figure 1-13 This invention provides a continuous bombing device and a device and method for continuous water immersion testing of projectiles under decompression conditions. The continuous bombing device includes a support 1, a sliding table 2, and a projectile release structure 3. The sliding table 2 is fixedly mounted on the support 1. The projectile release structure 3 includes a supporting shell 32, a rotating wheel 33, and a driving component 31. The supporting shell 32 is connected to the sliding table 2, and the sliding table 2 can drive the projectile release structure 3 to move vertically. The rotating wheel 33 is rotatably mounted on the supporting shell 32. The driving component 31... 1. Fixedly installed on the supporting housing 32, the driving component 31 is connected to the rotating wheel 33. The driving component 31 can drive the rotating wheel 33 to rotate. The rotating wheel 33 is provided with multiple projectile receiving cavities 331. The multiple projectile receiving cavities 331 are spaced apart along the circumference of the rotating wheel 33. The supporting housing 32 is provided with a projectile discharge opening 6. The projectile discharge opening 6 is configured such that when the projectile receiving cavity 331 is connected to the projectile discharge opening 6 and the connection is sufficient for the projectile to pass through, the projectile in the projectile receiving cavity 331 will detach from the projectile receiving cavity 331 and pass through the projectile discharge opening 6.

[0058] In this continuous bomb-dropping device, the rotating wheel 33 is equipped with multiple projectile receiving cavities 331, each capable of holding one projectile. When the projectile receiving cavity 331 containing the projectile is not connected to the projectile opening, the projectile is blocked by the supporting shell 32 and remains inside the projectile receiving cavity 331. When the driving member 31 drives the rotating wheel 33 to rotate, and the projectile receiving cavity 331 of the rotating wheel 33 connects to the projectile opening with sufficient space for the projectile to pass through, the projectile falls vertically under the influence of gravity, detaches from the projectile receiving cavity 331, and passes through the projectile opening, thus completing one projectile release. If a projectile water immersion test is required without changing the decompression environment, the driving member 31 can drive the rotating wheel 33 to rotate again. When the next projectile receiving cavity 331 connects to the projectile opening with sufficient space for the projectile to pass through, the projectile in that receiving cavity 331 falls vertically, completing another projectile release. This cycle continues until projectile release is no longer required. Furthermore, the moving slide 2 can drive the projectile release structure 3 to move vertically. The height of the projectile release structure 3 can be adjusted according to the required projectile release height, achieving variable-velocity water entry. This continuous bomb-dropping device can achieve continuous and controllable release of multiple projectiles into the water under the same decompression environment—that is, after one decompression in the decompression tank, without opening the decompression tank. This solves the problems of low efficiency and inconsistent pressure control caused by multiple decompression operations required for multiple water entry tests in existing technologies. Moreover, this continuous bomb-dropping device has a compact structure, convenient projectile loading, safe, simple, and reliable operation, and one set of equipment can be reused repeatedly, resulting in low cost. While achieving the expected results, it can significantly improve test efficiency and is suitable for various site applications.

[0059] Furthermore, depending on the experimental requirements, the size, number, and position of the projectile ejection opening 6, as well as the size, number, and position of the projectile receiving cavity 331 of the rotating wheel 33, can be designed to allow single or multiple projectiles of different diameters to enter the water. It can also achieve the effect of multiple projectiles entering the water in series or parallel under decompression conditions. For example, by changing the size of the projectile receiving cavity 331, it can accommodate projectiles of different diameters; or, by changing the number of projectile openings, two or more projectile openings can be designed that can simultaneously connect to two or more projectile receiving cavities 331, allowing two or more projectiles to enter the water together. Multiple rotating wheels 33 and supporting shells 32 can also be designed according to the projectile release requirements, allowing for direct replacement of the required rotating wheels 33 and supporting shells 32 during testing.

[0060] Preferably, the ejection opening 6 is fan-shaped. The center of the fan-shaped arc is at the center of the lower plate 323. When the projectile receiving cavity 331 of the rotating wheel 33 is connected to the ejection opening 6, and the circumference of the projectile receiving cavity 331 is just tangent to the straight edge of the fan-shaped ejection opening 6, the rotation stops, and the projectile falls vertically from the projectile receiving cavity 331 under the action of gravity, thus completing the release of the projectile.

[0061] Preferably, the supporting shell 32 includes an upper plate 321, a lower plate 323, a front side plate 322, and a rear side plate 324. The upper plate 321, front side plate 322, lower plate 323, and rear side plate 324 are sequentially fixedly connected by angle brackets. The rotating wheel 33 is located between the upper plate 321 and the lower plate 323, and between the front side plate 322 and the rear side plate 324. The motion slide 2 is connected to the rear side plate 324, the driving component 31 is connected to the upper plate 321, and the ejection opening 6 is located on the lower plate 323. It can be understood that the upper plate 321, front side plate 322, lower plate 323, and rear side plate 324 are sequentially fixedly connected by angle brackets, and the upper plate 321 and rear side plate 324 are also fixedly connected by angle brackets, forming a rectangle. The angle brackets are L-shaped. The upper plate 321, the front side plate 322, the lower plate 323 and the rear side plate 324 are provided with through holes so that they can be connected by bolts through corner brackets.

[0062] Preferably, the width of the upper plate 321 is slightly larger than the width of the stepper motor, which facilitates the installation of the projectile while supporting the stepper motor. The width of the upper plate 321 will not obstruct the insertion of the projectile into the projectile receiving cavity 331 of the rotating wheel 33.

[0063] Preferably, the continuous bomb-throwing device further includes a guide rail 4 and a trolley 5. The guide rail 4 is fixedly mounted on the bracket 1, and the trolley 5 is fixedly mounted on the supporting housing 32. The trolley 5 is slidably mounted on the guide rail 4, and the guide rail 4 extends vertically. In this embodiment, the guide rail 4 is located opposite the moving slide 2, that is, the projectile release structure 3 is located between the guide rail 4 and the moving slide 2. The trolley 5 is connected to the front side plate 322, and the moving slide 2 is connected to the rear side plate 324. It can be understood that the guide rail 4 is provided with a groove, and the trolley 5 is provided with a pulley. The pulley is located in the groove and can move along the groove.

[0064] like Figure 6-8 As shown, preferably, the continuous bomb-throwing device further includes a motor controller. The drive component 31 is a stepper motor, and the motor controller is connected to the stepper motor. The motor controller can control the start, stop, and speed of the stepper motor. The rotation of the stepper motor is controlled by the motor controller. The upper plate 321 of the supporting housing 32 has a connecting hole 9 at its center, which is slightly larger than the diameter of the output shaft of the stepper motor, allowing the output shaft of the stepper motor to pass through. The outer periphery is a circular shallow groove with the same size as the shallow boss around the output shaft of the stepper motor. Through holes are opened around the circular shallow groove, which are used for bolt connection to the four corner positions of the stepper motor.

[0065] like Figure 1-3 As shown, preferably, an upper connecting shaft 332 is provided above the rotating wheel 33, and the output end of the stepper motor is connected to the upper connecting shaft 332 through a coupling 7.

[0066] like Figure 4 and Figure 9-11 As shown, preferably, a lower connecting shaft 333 is provided below the rotating wheel 33, and a connecting boss is fixedly provided on the lower plate 323. The connecting boss has a connecting groove 8, and the lower connecting shaft 333 rotatably passes through the connecting groove 8. The lower end of the lower connecting shaft 333 has a rounded corner for easy installation and to reduce friction when the rotating wheel 33 rotates. The depth of the connecting groove 8 is the same as the length of the lower connecting shaft 333 of the rotating wheel 33, which can accommodate and fix the rotating wheel 33 to the lower connecting shaft 333, reducing the friction between the rotating wheel 33 and the lower plate 323.

[0067] In actual use, the inner diameter of the projectile receiving cavity 331 of the rotating wheel 33 is determined according to the geometric dimensions of the projectile. The number of projectile receiving cavities 331 of the rotating wheel 33 is determined according to the requirements of projectile throwing, thereby further determining the size of the rotating wheel 33. The size of the supporting shell 32 is determined according to the size of the rotating wheel 33. The model of the moving slide 2 and the size of the bracket 1 are determined according to the size and mass of the rotating wheel 33 and the supporting shell 32. The height of the bracket 1 and the position of the moving slide 2 are adjusted according to the speed requirements of water entry.

[0068] This invention also provides a device for continuous water immersion testing of projectiles under depressurization conditions, including the aforementioned continuous projectile-dropping device, a depressurization tank 100, and a vacuum pump. The vacuum pump is connected to the depressurization tank 100 and can draw gas from the tank to create a depressurization environment. The continuous projectile-dropping device is fixedly installed inside the depressurization tank 100. The vacuum pump draws gas from the tank to achieve depressurization, and the pressure inside the tank is read in real time by a pressure gauge connected to it. A bracket 1 is connected to a lifting lug inside the depressurization tank 100 to fix the continuous projectile-dropping device inside the tank. The stepper motor's wires pass through a through hole in the depressurization tank cover and are connected to a power supply and a stepper motor controller.

[0069] Preferably, the pressure-reducing tank 100 is provided with an observation window 101. The condition inside the pressure-reducing tank 100 can be seen through the observation window 101.

[0070] This invention further provides a method for continuous water immersion testing of a projectile under decompression conditions, employing the aforementioned continuous water immersion testing apparatus for a projectile under decompression conditions, comprising:

[0071] S1: Install multiple projectiles into the multiple projectile receiving cavities 331 of the rotating wheel 33. S2: Adjust the motion slide 2 to move the supporting shell 32 to the required position according to the required projectile descent height. The required projectile descent height can be determined based on the projectile's water entry velocity requirements.

[0072] In this embodiment, the motion slide 2 can be manually adjusted so that the continuous bombing device can be installed into the depressurization tank 100 after the motion slide 2 is adjusted. The pressure inside the tank can be adjusted by a vacuum pump until the environment inside the tank reaches the required environment.

[0073] In other embodiments, the motion slide 2 can be electrically adjusted, either before or after the continuous bomb-throwing device is installed into the decompression tank 100.

[0074] S3: The drive unit 31 drives the rotating wheel 33 to rotate at a set angle, so that the projectile receiving cavity 331 containing the projectile is connected to the projectile exit opening 6 and the connection is large enough for the projectile to pass through. Under the action of gravity, the projectile falls vertically.

[0075] S4: Determine if projectile release is still required; if yes, return to S3; otherwise, complete projectile release.

[0076] Obviously, the above-disclosed embodiments of the present invention are merely illustrative of the invention. The 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. It is neither necessary nor possible to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for testing the continuous entry of a projectile into water under reduced pressure, characterized in that it comprises: The continuous bomb-throwing device, a pressure reduction tank (100), and a vacuum pump connected to the pressure reduction tank (100) are included. The continuous bomb-throwing device includes: a support (1); a moving slide (2) fixedly arranged on the support (1); a bomb-releasing structure (3) including a support shell (32), a rotating wheel (33), and a driving member (31), the support shell (32) being connected to the moving slide (2), the moving slide (2) being capable of moving the bomb-releasing structure (3) in a vertical direction, the rotating wheel (33) being rotatably arranged on the support shell (32), the driving member (31) being fixedly arranged on the support shell (32), the driving member (31) being connected to the rotating wheel (33), the driving member (31) being capable of driving the rotating wheel (33) to rotate, the rotating wheel (33) being provided with a plurality of bomb-receiving cavities (331), the plurality of bomb-receiving cavities (331) being arranged at intervals along the circumferential direction of the rotating wheel (33), the support shell (32) being provided with a bomb-throwing opening (6) below, the bomb-throwing opening (6) being configured to allow the bomb in the bomb-receiving cavity (331) to escape from the bomb-receiving cavity (331) and pass through the bomb-throwing opening (6) when the bomb-receiving cavity (331) is in communication with the bomb-throwing opening (6) and the communication is sufficient for the bomb to pass through. The size, number, and position of the bomb-throwing opening (6) and the size, number, and position of the bomb-receiving cavities (331) of the rotating wheel (33) are designed to allow different diameters of single or multiple bombs to enter water, and to allow multiple bombs to enter water in a series or parallel manner in a reduced-pressure environment.

2. The apparatus according to claim 1, wherein: A guide rail (4) and a trolley (5) are further included, the guide rail (4) being fixedly arranged on the support (1), the trolley (5) being fixedly arranged on the support shell (32), the trolley (5) being slidingly arranged on the guide rail (4), the guide rail (4) extending in a vertical direction.

3. The apparatus according to claim 1, wherein: A motor controller is further included, the driving member (31) being a stepping motor, the motor controller being connected to the stepping motor, the motor controller being capable of controlling the start-stop and rotating speed of the stepping motor.

4. The apparatus according to claim 3, wherein: The rotating wheel (33) is provided with an upper connecting shaft (332), the output end of the stepping motor being connected to the upper connecting shaft (332) through a coupling (7).

5. The apparatus for testing the continuous water entry of a projectile in a reduced pressure environment according to claim 1, wherein: The support shell (32) comprises an upper plate (321), a lower plate (323), a front side plate (322) and a rear side plate (324), the upper plate (321), the front side plate (322), the lower plate (323) and the rear side plate (324) are sequentially fixedly connected through an angle code, the rotating wheel (33) is located between the upper plate (321) and the lower plate (323) and between the front side plate (322) and the rear side plate (324), the movement slide table (2) is connected with the rear side plate (324), the driving member (31) is connected with the upper plate (321), and the bullet ejection opening (6) is arranged on the lower plate (323).

6. The apparatus for testing the continuous water entry of a projectile in a reduced pressure environment according to claim 5, wherein: A lower connecting shaft (333) is arranged below the rotating wheel (33), the lower plate (323) is fixedly provided with a connecting boss, the connecting boss is provided with a connecting groove (8), and the lower connecting shaft (333) is rotatably arranged in the connecting groove (8).

7. The apparatus according to claim 1, wherein: The bullet ejection opening (6) is in a fan shape.

8. The apparatus for testing the continuous water entry of a projectile in a reduced pressure environment according to claim 1, wherein: The decompression tank (100) is provided with an observation window (101).

9. A method for testing a projectile continuously entering water under reduced pressure, characterized in that, The device for continuously testing the entry of a bullet into water in a decompression environment comprises the device according to any one of claims 1-8. S1: a plurality of bullets are respectively arranged in a plurality of bullet accommodating cavities (331) of the rotating wheel (33); S2: according to a required bullet falling height, the movement slide table (2) is adjusted to move the support shell (32) to a required position; S3: the rotating wheel (33) is driven to rotate by the driving member (31) to rotate by a set angle, so that the bullet accommodating cavity (331) provided with the bullet is in communication with the bullet ejection opening (6) and the communication position is sufficient for the bullet to pass through, and under the action of gravity, the bullet vertically falls; S4: whether the bullet needs to be released is judged; If yes, return to S3; If no, the bullet release is completed.

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