Three-degree-of-freedom catapult launching device with angle of attack considering air mass at barrel opening

Abstract

The present application relates to underwater launching technology field of navigation body, specifically relates to a kind of three degrees of freedom with angle of attack of considering barrel mouth gas cluster ejecting water experimental device, comprising: fixed frame, test water tank and lifting device are equipped in fixed frame;Motion system support frame, it is equipped in test water tank, and motion system support frame is connected with lifting device, lifting device drives motion system support frame to do lifting movement;Transverse power drive system, it is equipped in test water tank, and transverse power drive system is connected with motion system support frame;The three degrees of freedom with angle of attack of considering barrel mouth gas cluster ejecting water experimental device, compressed high-pressure gas is used as power source, not only can change the barrel speed of navigation body by adjusting the pressure in gas tank, and compared with other devices, the inflation amount of barrel mouth gas cluster can be controlled according to actual situation, the gas of barrel mouth gas cluster can be formed, with the advantages of high safety and reliability, low cost, high efficiency and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater launching of a vehicle, and particularly relates to a three-degree-of-freedom launching-out-water experimental device with an attack angle considering a barrel mouth gas group. BACKGROUND

[0002] Experimental research is an important research method for underwater launching of a vehicle. A single-degree-of-freedom underwater launching experimental device does not consider the lateral force acting on the vehicle, and it is difficult to reflect the influence of the attack angle on the trajectory of the vehicle under the action of the lateral force. The device cannot simulate the real state of the underwater motion of the vehicle, and has certain assumptions. However, in the field of underwater launching research, the complex marine environment has randomness. Under the action of multiple factors such as cross flow and speed, the vehicle presents a multi-degree-of-freedom motion state with an attack angle. This process is extremely unstable, and the influence on the trajectory and attitude of the underwater motion of the vehicle cannot be ignored.

[0003] In order to prevent seawater from flowing back and ensure the sealing of the launching barrel before launching, a barrel mouth film is arranged above the vehicle. In the actual underwater launching process, the amount of gas between the vehicle and the barrel mouth film is pushed out of the barrel to form a barrel mouth gas group. After the vehicle leaves the launching barrel, part of the barrel mouth gas group adheres to the bottom of the vehicle to form a tail cavity which moves with the vehicle. The axial force and axial motion of the vehicle change with the change of the barrel mouth gas group. In view of the influence of the barrel mouth gas group on the trajectory of the vehicle, the formation, development and collapse of the cavity, and in combination with the experimental design of the water trajectory of the vehicle, it is found in recent years that the barrel mouth pressure sealing is carried out by using polyethylene PE material (patent application number: 202110827325.7), or the piston type barrel mouth sealing method (patent application number: 201911418755.2), which can realize the barrel mouth sealing and generate the barrel mouth gas group in a small-scale scaled experimental device.

[0004] The above method has certain shielding and disturbance to the barrel mouth gas group in the experimental process, which affects the flow of the barrel mouth gas group. In addition, the piston type sealing method has certain differences with the actual method in generating the barrel mouth gas group. In the actual working process, the high-pressure gas formed by the vehicle extruding the gas above is the main component of the barrel mouth gas group.

[0005] At present, underwater launching experiment is carried out, and the out-water test research of the three-degree-of-freedom vehicle with an attack angle is not perfect, and the research on the cavity generated in the out-water process of the vehicle and the cylinder mouth gas group also lacks certain accuracy. The three-degree-of-freedom underwater launching device and the research structure of the cylinder mouth gas group have the following difficulties: (1) The launching system of the three-degree-of-freedom experimental device is at the bottom of the water tank, and it is difficult to replace the equipment and install the vehicle. (2) The three-degree-of-freedom experimental device is affected by the lateral velocity and the size of the device, and it is difficult to simulate the influence of variable attack angle on the trajectory of the vehicle in a very short launching time. (3) The cylinder mouth film material blocks and disturbs the cylinder mouth gas group, affecting the development of the cylinder mouth gas group. (4) The inflation amount of the cylinder mouth gas group cannot be controlled, and it is difficult to ensure that there is enough gas to form the cylinder mouth gas group. (5) The influence of the multi-degree-of-freedom motion of the vehicle under the action of the lateral velocity on the flow field disturbance of the cylinder mouth gas group. SUMMARY

[0006] Therefore, the technical problem to be solved by the present application is to overcome the problem that the inflation amount of the cylinder mouth gas group in the prior art cannot be controlled, and it is difficult to ensure that there is enough gas to form the cylinder mouth gas group, thereby providing a three-degree-of-freedom out-water experiment device with an attack angle considering the cylinder mouth gas group.

[0007] In order to solve the above technical problems, the present application provides a three-degree-of-freedom out-water experiment device with an attack angle considering the cylinder mouth gas group, comprising: a fixed frame, the fixed frame is provided with a test water tank and a lifting device; a motion system support frame is arranged in the test water tank, and the motion system support frame is connected with the lifting device, and the lifting device drives the motion system support frame to make lifting motion; a lateral power driving system is arranged in the test water tank, and the lateral power driving system is connected with the motion system support frame; a launching device comprising a launching cylinder and a gas tank, the launching cylinder is arranged on the lateral power driving system, the lateral power driving system drives the launching cylinder to make reciprocating motion along the extension direction of the lateral power driving system, the launching cylinder is provided with a vehicle, and three rubber adapters are arranged between the vehicle and the launching cylinder; the gas tank is connected with the launching cylinder through a high-pressure gas launching pipe; three inlet valves are provided, one end of each inlet valve is connected with the high-pressure gas launching pipe, and the other end of each inlet valve is connected with three inlet pipes respectively, the inlet pipes are connected with the rubber adapters; a speed measuring device is arranged on the lateral power driving system and close to the launching cylinder.

[0008] Further, the launching cylinder comprises: a cylinder body arranged on the lateral power driving system; a cylinder cover arranged on the cylinder body, and a cylinder mouth film arranged on the cylinder cover; a film support arranged in the cylinder mouth film and connected with the cylinder cover, and a blade arranged on the film support.

[0009] Further, it further comprises an annular connecting piece, the film support is arranged on the annular connecting piece, and the film support is connected with the cylinder cover.

[0010] Further, the high-pressure gas launch tube is provided with a first valve body and a solenoid valve, and a second valve body.

[0011] Further, the transverse power driving system comprises a support bottom plate arranged in the test water tank, the support bottom plate being connected with a motion system support frame, and a smooth track being arranged on the support bottom plate; a boat speed bottom plate being arranged on the smooth track, and the gas tank and the launch tube being arranged on the boat speed bottom plate; a moving mechanism being arranged on the support bottom plate, and the boat speed bottom plate being arranged on the boat speed bottom plate, and the moving mechanism being connected with a driving mechanism.

[0012] Further, the moving mechanism comprises a ball screw arranged on the support bottom plate, a screw nut being sleeved on the ball screw, the boat speed bottom plate being connected with the screw nut, and a plurality of sliding blocks being arranged on the smooth track and connected with the boat speed bottom plate.

[0013] Further, the driving mechanism comprises a driving piece arranged on the motion system support frame, one end of the driving piece being provided with a transmission shaft, a driving gear being arranged at one end of the transmission shaft, and a driven gear being arranged at one end of the ball screw and engaged with the driving gear.

[0014] Further, the driving gear and the driven gear are bevel gears.

[0015] Further, the lifting device comprises a lifting frame arranged in the fixed frame and located at two sides of the test water tank, a fixed pulley arranged at the top of the fixed frame, and a steel wire rope, one end of which being connected with the fixed frame and the other end being connected with the lifting frame and the motion system support frame.

[0016] Further, the lifting frame and the fixed frame and the motion system support frame are all provided with connecting blocks, and the steel wire rope is connected with the connecting blocks.

[0017] The technical scheme of the present application has the following advantages:

[0018] 1.The three-degree-of-freedom launch device with attack angle and considering the gas group at the barrel mouth, comprising: a fixed frame, wherein a test water tank and a lifting device are arranged in the fixed frame; a motion system support frame is arranged in the test water tank, and the lifting device is connected with the motion system support frame, so that the lifting device drives the motion system support frame to move up and down; a transverse power driving system is arranged in the test water tank, and the transverse power driving system is connected with the motion system support frame; a launching device comprises a launching barrel and a gas tank, the launching barrel is arranged on the transverse power driving system, the transverse power driving system drives the launching barrel to move back and forth along the extension direction of the transverse power driving system, a navigation body is arranged in the launching barrel, and three rubber adapters are arranged between the navigation body and the launching barrel; the gas tank is connected with the launching barrel through a high-pressure gas launching pipe; three air inlet valves are arranged, one end of each air inlet valve is connected with the high-pressure gas launching pipe, and the other end of each air inlet valve is connected with three air inlet pipes respectively, the air inlet pipes are connected with the rubber adapters; and a speed measuring device is arranged on the transverse power driving system and close to the launching barrel.

[0019] The test water tank and the lifting device are arranged in the fixed frame, so that installation positions of the test water tank and the lifting device are provided, the motion system support frame is arranged in the test water tank, so that the lifting device can be connected with the motion system support frame, thereby driving the motion system support frame to move up and down relative to the test water tank. The transverse power driving system is arranged in the test water tank, the transverse power driving system can move transversely, thereby driving the launching device arranged on the transverse power driving system to move transversely, that is, driving the navigation body arranged in the launching barrel to move transversely. Meanwhile, the launching barrel is connected with the gas tank through the high-pressure gas launching pipe, thereby facilitating the transmission of high-pressure gas in the gas tank to the launching barrel, and the high-pressure gas is transmitted to the cavities of the three rubber adapters through the three air inlet valves connected with the three air inlet pipes respectively, thereby forming three variable gas pressure areas. At the beginning of the test, the control system opens the air inlet valves according to the preset code, the high-pressure gas reaches the bottom of the launching barrel through the air inlet valves, and impacts the navigation body, thereby completing the underwater launching process. The navigation body deflects under the combined action of the launching force received by the navigation body and the transverse motion of the launching barrel.

[0020] The launching barrel of the three-degree-of-freedom launch device with attack angle and considering the gas group at the barrel mouth can be moved horizontally to above the test water tank by the lifting device, and the filling and sealing of the navigation body on the water surface can be completed. The launching barrel is connected with three air inlet pipes, the amount of gas between the barrel mouth gas group and the rubber adapters can be changed, the amount of gas in the barrel mouth gas group is ensured, and different amounts of gas in the barrel mouth gas group can be studied. Meanwhile, the multi-degree-of-freedom launching of the navigation body and the multi-aspect research of the barrel mouth gas group can be realized, and rich results can be obtained in the research on the underwater launching technology of the navigation body.

[0021] The camera and lighting system of the three-degree-of-freedom launching device with consideration of the gas group at the barrel mouth and with attack angle is placed outside the test water tank, and does not need to be sealed, is convenient to operate, has high experimental efficiency, can easily obtain clear image information, and is convenient for observation and image recording.

[0022] The three-degree-of-freedom launching device with consideration of the gas group at the barrel mouth and with attack angle uses compressed high-pressure gas as a power source, can change the barrel exit speed of the vehicle by adjusting the pressure in the gas tank, and compared with other devices, the gas charging amount of the gas group at the barrel mouth can be controlled according to actual conditions, the gas of the gas group at the barrel mouth can be formed, and has the advantages of high safety and reliability, low cost, and high efficiency.

[0023] 2. The three-degree-of-freedom launching device with consideration of the gas group at the barrel mouth and with attack angle provided by the application, the driving mechanism comprises: a driving member arranged on the movement system support frame, one end of the driving member is provided with a transmission shaft; a driving gear is arranged at one end of the transmission shaft; a driven gear is arranged at one end of the ball screw, and the driven gear is engaged with the driving gear. The driving member is connected with the transmission shaft, that is, the rotation of the transmission shaft is provided with a power source, and one end of the transmission shaft is provided with a driving gear, the driving gear is engaged with the driven gear on the ball screw, the driving member drives the transmission shaft to rotate, and then drives the driving gear and the driven gear to rotate, so that the ball screw rotates, and then drives the screw nut matched with the ball screw to rotate, so that the speed bottom plate moves along the extension direction of the ball screw, that is, the lateral movement of the launching device is driven.

[0024] 3. The three-degree-of-freedom launching device with consideration of the gas group at the barrel mouth and with attack angle provided by the application, the lifting frame, the fixing frame, and the movement system support frame are all provided with a connecting block, and the steel wire rope is connected with the connecting block. That is, the connecting block is used to connect the steel wire rope with the lifting frame, the fixing frame, and the movement system support frame.

[0025] The summary section is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary section is not intended to identify key or essential features of the disclosure, and is not intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1A structure schematic view of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0028] Figure 2 A perspective view of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0029] Figure 3 A structure schematic view of the transverse dynamic driving system of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0030] Figure 4 A structure schematic view of the launching device of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0031] Figure 5 A structure schematic view of the launching barrel of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0032] Figure 6 A structure schematic view of the film support of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0033] Figure 7 A perspective view of the transverse dynamic driving system of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0034] Figure 8 A structure schematic view of the moving mechanism of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0035] Figure 9 A structure schematic view of the angular contact ball bearing of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth;

[0036] Figure 10 A structure schematic view of the driving mechanism of the three-degree-of-freedom launching-out-water experimental device with attack angle provided by the application considering the gas group of the barrel mouth.

[0037] Explanation of reference signs:

[0038] 1, fixed frame; 2, test water tank; 3, lifting device; 4, motion system support frame; 5, transverse power driving system; 6, launching device; 7, launching cylinder; 8, gas tank; 9, vehicle; 10, rubber adapter; 11, high-pressure gas launching tube; 12, inlet valve; 121, inlet pipe; 13, speed measuring device; 14, cylinder body; 15, cylinder cover; 16, cylinder mouth film; 17, film support; 18, blade; 19, ring connecting piece; 20, first valve body; 21, electromagnetic valve; 22, second valve body; 23, support bottom plate; 24, smooth track; 25, boat speed bottom plate; 26, moving mechanism; 27, driving mechanism; 28, ball screw; 29, screw nut; 30, sliding block; 31, driving piece; 32, transmission shaft; 33, driving gear; 34, driven gear; 35, lifting frame; 36, fixed pulley; 37, steel wire rope; 38, connecting block; 39, aluminum profile connecting piece; 40, fastening screw; 41, sub support; 42, bearing seat; 43, support section; 44, transverse limiting block; 45, diaphragm coupling; 46, angular contact ball bearing; 47, grounding bearing seat; 48, triangular piece; 49, universal wheel; 50, fixing piece. DETAILED DESCRIPTION

[0039] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0040] In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0041] In the description of the present disclosure, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected, or can be in communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0042] In the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components 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 repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not 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 skilled in the art can realize the application of other processes and / or the use of other materials.

[0044] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0045] Please refer to Figures 1 to 10As shown, the application provides a three-degree-of-freedom angle-of-attack launching water experiment device considering the barrel mouth gas mass, which comprises a fixing frame 1, wherein a test water tank 2 and a lifting device 3 are arranged in the fixing frame 1; a motion system support frame 4 is arranged in the test water tank 2, and the motion system support frame 4 is connected with the lifting device 3, and the lifting device 3 drives the motion system support frame 4 to make lifting motion; a transverse power driving system 5 is arranged in the test water tank 2, and the transverse power driving system 5 is connected with the motion system support frame 4; a launching device 6 comprises a launching barrel 7 and a gas tank 8, the launching barrel 7 is arranged on the transverse power driving system 5, the transverse power driving system 5 drives the launching barrel 7 to make reciprocating motion along the extension direction of the transverse power driving system 5, a navigation body 9 is arranged in the launching barrel 7, and three rubber adapters 10 are arranged between the navigation body 9 and the launching barrel 7; the gas tank 8 is connected with the launching barrel 7 through a high-pressure gas launching pipe 11; three inlet valves 12 are arranged, one end of each of the inlet valves 12 is connected with the high-pressure gas launching pipe 11, and the other end of each of the inlet valves 12 is connected with three inlet pipes 121 respectively, the inlet pipes 121 are connected with the rubber adapters 10; and a speed measuring device 13 is arranged on the transverse power driving system 5 and close to the launching barrel 7.

[0046] The test water tank 2 and the lifting device 3 are arranged in the fixing frame 1, so that installation positions are provided for the test water tank 2 and the lifting device 3; the motion system support frame 4 is arranged in the test water tank 2, so that the lifting device 3 can be connected with the motion system support frame 4, thereby driving the motion system support frame 4 to make lifting motion relative to the test water tank 2. The transverse power driving system 5 is arranged in the test water tank 2, the transverse power driving system 5 can make transverse motion, thereby driving the launching device 6 arranged on the transverse power driving system 5 to make transverse motion, i.e. driving the navigation body 9 arranged in the launching barrel 7 to make transverse motion. Meanwhile, the launching barrel 7 is connected with the gas tank 8 through the high-pressure gas launching pipe 11, so that the high-pressure gas in the gas tank 8 can be transmitted into the launching barrel 7, and the three inlet valves 12 are connected with the three inlet pipes 121 respectively, and the high-pressure gas is transmitted into the cavities of the three rubber adapters 10 through the three inlet valves 12, thereby forming three variable gas pressure areas. At the beginning of the test, the control system opens the inlet valves 12 according to the preset code, the high-pressure gas reaches the bottom of the launching barrel 7 through the inlet valves 12, impacts the navigation body 9, and completes the underwater launching process. The navigation body 9 deflects under the combined action of the launching force and the transverse motion of the launching barrel 7.

[0047] The launching cylinder 7 of the three-degree-of-freedom launching device with consideration of the air mass at the cylinder mouth and with attack angle can be horizontally moved above the test water tank 2 by the lifting device 3 to complete the filling and sealing of the vehicle 9 on the water surface; and the launching cylinder 7 is connected with three air inlet pipes 121 to change the gas volume between the air mass at the cylinder mouth and the rubber adapter 10, to ensure the inflation volume of the air mass at the cylinder mouth, and to study different air mass contents of the air mass at the cylinder mouth. Meanwhile, the multi-degree-of-freedom launching of the vehicle 9 and the multi-aspect study of the air mass at the cylinder mouth can be realized, and abundant results can be obtained for the underwater launching technology of the vehicle 9.

[0048] The camera and lighting system of the three-degree-of-freedom launching device with consideration of the air mass at the cylinder mouth and with attack angle is placed outside the test water tank, and does not need to be sealed, which is convenient to operate, has high experimental efficiency, can easily obtain clear image information, and is convenient for observation and image recording.

[0049] The three-degree-of-freedom launching device with consideration of the air mass at the cylinder mouth and with attack angle uses compressed high-pressure gas as a power source, which not only can change the launching speed of the vehicle 9 by adjusting the pressure in the gas tank 8, but also can control the inflation volume of the air mass at the cylinder mouth according to actual conditions, can form the air mass at the cylinder mouth, and has the advantages of high safety and reliability, low cost, and high efficiency.

[0050] The bottom of the test water tank 2 is provided with universal wheels 49, so as to facilitate the movement of the test water tank 2.

[0051] In some optional embodiments, the launching cylinder 7 comprises a cylinder body 14 arranged on the lateral power driving system 5, a cylinder cover 15 arranged on the cylinder body 14, a cylinder mouth film 16 arranged on the cylinder cover 15, a film support 17 arranged in the cylinder mouth film 16 and connected with the cylinder cover 15, and a blade 18 arranged on the film support 17.

[0052] The bottom of the cylinder body 14 is provided with an aluminum profile connecting piece 39, and a fastening screw 40 is arranged on the aluminum profile connecting piece 39, so as to realize the connection of the cylinder body 14 with the lateral power driving system 5 and the connection of the cylinder body 14 with the aluminum profile connecting piece 39.

[0053] The cylinder cover 15 is arranged on the cylinder body 14, and the cylinder cover 15 is threadedly connected with the cylinder body 14. The cylinder mouth film 16 is arranged on the cylinder cover 15, the cylinder cover 15 installs the cylinder mouth film 16 on the cylinder body 14, the film support 17 is arranged in the cylinder mouth film 16, and the blade 18 is arranged on the film support 17. The blade 18 is used to cut the cylinder mouth film 16 to reduce the resistance of the vehicle 9 impacting the cylinder mouth film 16.

[0054] Before the test, the air compressor charges the air tank 8, and the charging size is determined according to the out-of-cylinder speed of the navigation body 9. Then the launching device 6 is installed in the test water tank 2, and the film support 17 is installed above the launching cylinder 7. The film support 17 is spliced by a plurality of same sub-supports 41, and each sub-support 41 is provided with a blade 18 in the same direction as the movement direction of the support during launching, so as to cut the cylinder mouth film 16 and reduce the resistance of the navigation body 9 impacting the cylinder mouth film 16.

[0055] In some optional embodiments, the three-degree-of-freedom launching device considering the three-degree-of-freedom cylinder mouth gas group with an angle also includes a ring-shaped connecting piece 19, the film support 17 is arranged on the ring-shaped connecting piece 19, and the film support 17 is connected with the cylinder cover 15.

[0056] The film support 17 is fixed between the film support 17 and the launching cylinder 7 through a ring-shaped connecting piece 19, the film support 17 cooperates with the ring-shaped part in the ring-shaped connecting piece 19, the ring-shaped connecting piece 19 is fixed between the film support 17 and the launching cylinder 7 by cross countersunk screws, and each ring-shaped connecting piece 19 is also fixed by countersunk screws.

[0057] The film support 17 is fastened by thread connection between the cylinder cover 15 and the cylinder body 14, and the sealing strip compacted by the cylinder cover 15 isolates the environment in the launching cylinder 7 from the environment in the water tank, so as to prevent water from flowing back.

[0058] The high-pressure gas launching pipe 11 is provided with a first valve body 20, an electromagnetic valve 21 and a second valve body 22 in sequence.

[0059] At the beginning of the test, the control system opens the electromagnetic valve 21 according to the preset code, high-pressure gas passes through the first valve body 20, the electromagnetic valve 21 and the second valve body 22 to the bottom of the launching cylinder 7, impacts the navigation body 9, and completes the underwater launching process. After launching is completed, the water in the test water tank 2 enters the launching cylinder 7, and since the first valve body 20, the electromagnetic valve 21 and the second valve body 22 and the three air inlet valves 12 are all one-way valves, the water flow back to the air pipe can be prevented.

[0060] In some optional embodiments, the transverse power driving system 5 includes a support bottom plate 23 arranged in the test water tank 2, the support bottom plate 23 is connected with the movement system support frame 4, the support bottom plate 23 is provided with a smooth track 24, a boat speed bottom plate 25 is arranged on the smooth track 24, the air tank 8 and the launching cylinder 7 are arranged on the boat speed bottom plate 25, a moving mechanism 26 is arranged on the support bottom plate 23, the boat speed bottom plate 25 is located on the boat speed bottom plate 25, and the moving mechanism 26 is connected with a driving mechanism 27.

[0061] The movement system support is provided with a mounting position by arranging the movement system support frame 4 on the support base plate 23, and the smooth track 24 is arranged on the support base plate 23, which facilitates the installation of the moving mechanism 26 on the smooth track 24, and the moving mechanism 26 is connected with the driving mechanism 27, so that the moving mechanism 26 is driven to move laterally by the driving mechanism 27.

[0062] Specifically, the moving mechanism 26 comprises a ball screw 28 arranged on the support base plate 23, a screw nut 29 sleeved on the ball screw 28, the support base plate 25 is connected with the screw nut 29, and a plurality of sliding blocks 30 are arranged on the smooth track 24, and the sliding blocks 30 are connected with the support base plate 25.

[0063] The ball screw 28 is arranged on the support base plate 23, the screw nut 29 is arranged on the ball screw 28, the screw nut 29 is connected with the support base plate 25, and the sliding blocks 30 are arranged on the smooth track 24, which facilitates the movement of the support base plate 25 on the smooth track 24.

[0064] The four sliding blocks 30 are symmetrically arranged on the smooth track 24.

[0065] The two ends of the support base plate 23 are provided with bearing seats 42 and support segments 43, so that the ball screw 28 is supported by the bearing seats 42 and the support segments 43, the gap between the ball screw 28 and the support base plate 23 is ensured, and the rotation of the ball screw 28 is facilitated.

[0066] The support base plate 23 is provided with a transverse limiting block 44, which can effectively limit the sliding position of the sliding block 30.

[0067] In some optional embodiments, the driving mechanism 27 comprises a driving member 31 arranged on the movement system support frame 4, one end of the driving member 31 is provided with a transmission shaft 32, a driving gear 33 is arranged at one end of the transmission shaft 32, and a driven gear 34 is arranged at one end of the ball screw 28, and the driven gear 34 is engaged with the driving gear 33.

[0068] The driving member 31 is connected with the transmission shaft 32, that is, the rotation of the transmission shaft 32 is provided with a power source, and one end of the transmission shaft 32 is provided with a driving gear 33, the driving gear 33 is engaged with a driven gear 34 on the ball screw 28, that is, the driving member 31 drives the transmission shaft 32 to rotate, and then drives the driving gear 33 and the driven gear 34 to rotate, so that the ball screw 28 rotates, and then drives the screw nut 29 matched with the ball screw 28 to rotate, so that the boat speed bottom plate 25 moves along the extension direction of the ball screw 28, that is, the lateral movement of the launching device 6 is driven.

[0069] The driving gear 33 and the driven gear 34 are bevel gears.

[0070] The boat speed bottom plate 25 is a rectangular plate.

[0071] Specifically, the driven gear 34 is connected with the ball screw 28 through a fastening screw 40, and the driving gear 33 is connected with the transmission shaft 32 through the fastening screw 40.

[0072] A diaphragm coupling 45 is arranged between the driving member 31 and the transmission shaft 32, and the diaphragm coupling 45 is fixed on the top of the transmission shaft 32 through the fastening screw 40. Two fixing members 50 are arranged on the side surface of the movement system support frame 4, and the transmission shaft 32 penetrates the fixing members 50, that is, the transmission shaft 32 is fixed. An angular contact ball bearing 46 and a grounding bearing seat 47 are arranged on the bottom of the transmission shaft 32, the angular contact ball bearing 46 is matched with the grounding bearing seat 47 through the outside, and the inside of the angular contact ball bearing 46 is matched with the transmission shaft 32.

[0073] In some optional embodiments, the lifting device 3 comprises a lifting frame 35 arranged in the fixed frame 1 and located on both sides of the test water tank 2, a fixed pulley 36 arranged on the top of the fixed frame 1, and a steel wire rope 37 having one end connected with the fixed frame 1 and the other end connected with the lifting frame 35 and the movement system support frame 4.

[0074] One end of the steel wire rope 37 is tied on the movement system support frame 4, the middle part of the steel wire rope 37 is wound around the fixed pulley 36, and the other end of the steel wire rope 37 is fixed on the lifting frame 35. When it is necessary to refill, the lateral power driving system 5 can be lifted to the top of the test water tank 2 by the lifting device 3, and the refilling work can be performed.

[0075] The lifting frame 35, the fixed frame 1 and the movement system support frame 4 are all provided with a connecting block, and the steel wire rope 37 is connected with the connecting block 38. That is, the connecting block 38 is used to connect the steel wire rope 37 with the lifting frame 35, the fixed frame 1 and the movement system support frame 4.

[0076] The connection between the lifting frame 35 and the fixed frame 1 and the motion system support frame 4 is provided with a triangular piece 48, so that the lifting frame 35 and the fixed frame 1 and the motion system support frame 4 can be fixed by the triangular piece 48, to ensure the stability of the connection.

[0077] Obviously, the above embodiments are merely exemplary and are not intended to limit the embodiments. Based on the above description, one of ordinary skill in the art can make other different forms of changes or modifications. All the embodiments are not required to be enumerated here. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A three-degree-of-freedom water ejection experimental device considering the air mass at the nozzle, characterized in that, The utility model relates to a kind of test device for underwater vehicle, including: Fixed frame (1), be equipped with test water tank (2) and lifting device (3) in fixed frame (1); Motion system support frame (4) is equipped in test water tank (2), and motion system support frame (4) is connected with lifting device (3), lifting device (3) drives motion system support frame (4) to do lifting movement; Transverse power drive system (5) is equipped in test water tank (2), and transverse power drive system (5) is connected with motion system support frame (4); Launch device (6) includes launch cylinder (7) and gas tank (8), launch cylinder (7) is equipped on transverse power drive system (5), transverse power drive system (5) drives launch cylinder (7) to do reciprocating motion along the extension direction of transverse power drive system (5), launch cylinder (7) is equipped with navigation body (9), navigation body (9) is equipped with three rubber adapters (10) between launch cylinder (7);Gas tank (8) is connected with launch cylinder (7) by high-pressure gas launch pipe (11); Air inlet valve (12) has three, one end is connected with high-pressure gas launch pipe (11), the other end is connected with three air inlet pipes (121) respectively, air inlet pipe (121) is connected with rubber adapter (10); Speed measuring device (13) is equipped on transverse power drive system (5), and is close to launch cylinder (7) setting.

2. The three-degree-of-freedom angled launch water tunnel test apparatus with consideration of the plume of the nozzle according to claim 1, wherein, Launch cylinder (7) includes: Cylinder body (14) is equipped on transverse power drive system (5); Cylinder cover (15) is equipped on cylinder body (14), and cylinder cover (15) is equipped with cylinder mouth film (16); Film support (17) is equipped in cylinder mouth film (16), and is connected with cylinder cover (15), and blade (18) is equipped on film support (17).

3. The three-degree-of-freedom angled launch water tunnel test apparatus with consideration of the plug gas group according to claim 2, characterized in that, Also including annular connecting piece (19), film support (17) is equipped on annular connecting piece (19), and film support (17) is connected with cylinder cover (15).

4. The three degree of freedom angled launch out of water experimental apparatus with consideration of the effect of the pocket of air according to claim 1, wherein, First valve body (20) and solenoid valve (21) and second valve body (22) are equipped on high-pressure gas launch pipe (11).

5. The three degree of freedom angled ejection water tunnel test apparatus with consideration of plug gas, according to any one of claims 1-4, characterized in that, Transverse power drive system (5) includes: Supporting bottom plate (23) is equipped in test water tank (2), and supporting bottom plate (23) is connected with motion system support frame (4), and supporting bottom plate (23) is equipped with smooth track (24); Boat speed bottom plate (25) is equipped on smooth track (24), and gas tank (8) and launch cylinder (7) are equipped on boat speed bottom plate (25); Moving mechanism (26) is equipped on supporting bottom plate (23), and boat speed bottom plate (25) is located on boat speed bottom plate (25), and moving mechanism (26) is connected with driving mechanism (27).

6. The three-degree-of-freedom angled launch water tunnel test apparatus with consideration of plug gas group according to claim 5, characterized in that, Moving mechanism (26) includes: Ball screw (28) is equipped on supporting bottom plate (23); Nut (29) is sleeved on ball screw (28), and boat speed bottom plate (25) is connected with nut (29); Slide block (30) has multiple, and is equipped on smooth track (24), and slide block (30) is connected with boat speed bottom plate (25).

7. The three-degree-of-freedom angled launch water tunnel test apparatus with consideration of plug gas group according to claim 6, characterized in that, Driving mechanism (27) includes: Driving piece (31) is equipped on motion system support frame (4), and one end of driving piece (31) is equipped with transmission shaft (32); A driving gear (33) is arranged at one end of the transmission shaft (32); A driven gear (34) is arranged at one end of the ball screw (28), and the driven gear (34) is engaged with the driving gear (33).

8. The three-degree-of-freedom angled launch water tunnel test apparatus with consideration of the plume of the nozzle according to claim 7, wherein, The driving gear (33) and the driven gear (34) are both bevel gears.

9. The three degree of freedom angled ejection water tunnel test apparatus with consideration of plug gas, according to any one of claims 6-8, characterized in that, The lifting device (3) comprises: A lifting frame (35) is arranged in the fixed frame (1) and located on both sides of the test water tank (2); A fixed pulley (36) is arranged at the top of the fixed frame (1); A steel wire rope (37) is connected to the fixed frame (1) at one end and connected to the lifting frame (35) and the motion system support frame (4) at the other end.

10. The three degree of freedom angled launch out of water experimental apparatus that considers the effect of the muzzle gas plug of claim 9, wherein, The lifting frame (35) and the fixed frame (1), and the motion system support frame (4) are all provided with a connecting block (38), and the steel wire rope (37) is connected to the connecting block (38).

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