CN113933021A - Transmitting device for high-speed series-parallel connection water inlet test - Google Patents
Transmitting device for high-speed series-parallel connection water inlet test Download PDFInfo
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- CN113933021A CN113933021A CN202111122948.0A CN202111122948A CN113933021A CN 113933021 A CN113933021 A CN 113933021A CN 202111122948 A CN202111122948 A CN 202111122948A CN 113933021 A CN113933021 A CN 113933021A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a launching device for a high-speed series-parallel connection water inlet test, which comprises a high-pressure gas cylinder, a gas cylinder support, a high-pressure gas storage tank, a gas storage tank support, a launching tube support and a plurality of launching tubes, wherein the high-pressure gas cylinder supplies gas for the high-pressure gas storage tank through a gas inlet pipeline; the electromagnetic valve controls a plurality of transmitting tubes to transmit simultaneously to realize parallel transmitting. The invention realizes the continuous high-speed serial emission of the structures and the parallel high-speed emission of different structures.
Description
Technical Field
The invention belongs to the technical field of hydrodynamic high-speed water inlet tests, and particularly relates to an emitter for a high-speed series-parallel water inlet test.
Background
With the development of science and technology, particularly the update of high-speed photography technology, researchers aim at the problem of water entry to research the transition from low speed to high speed, and the transition from a single structure to a plurality of structures in series and parallel connection with water entry. For the series-parallel connection water inlet, the existing experimental device mainly focuses on the research of the experimental device for low-speed water inlet, namely, the water inlet with the speed of several meters per second is obtained through free falling, and the research of the experimental device for the series-parallel connection high-speed water inlet is lacked.
Aiming at the high-speed water inlet test, people have carried out corresponding design improvement on the aspects of launching devices, water tank design, test data acquisition and the like. However, in the existing invention design, only one launching structure is provided, but in actual sea warfare, ships can launch several torpedoes or missiles continuously (in series) or in parallel (in parallel) in order to destroy targets, so that a solution is needed for experimental research on structure series-parallel connection high-speed water entry. Therefore, it is necessary to design a launching device for high-speed series-parallel water test to solve the above problems.
Disclosure of Invention
In view of the above, the present invention is directed to a launching device for high-speed serial and parallel water entry tests, which realizes continuous high-speed serial launching of structures and parallel high-speed launching of different structures; and the emission angle is adjustable.
The invention achieves the purpose through the following technical scheme: :
a launching device for a high-speed series-parallel connection water inlet test comprises a high-pressure gas cylinder, a gas cylinder support, a high-pressure gas storage tank, a gas storage tank support, a launching tube support and a plurality of launching tubes, wherein the high-pressure gas cylinder is arranged on the gas cylinder support, the high-pressure gas cylinder and the high-pressure gas storage tank are communicated through a gas inlet pipeline, the high-pressure gas cylinder supplies gas to the high-pressure gas storage tank through the gas inlet pipeline, the high-pressure gas storage tank is arranged on the gas storage tank support, a rotating shaft is arranged in the high-pressure gas storage tank, a rotating isolation fan blade is arranged on the rotating shaft, the rotating isolation fan blade divides the inside of the high-pressure gas storage tank into a plurality of gas distribution chambers, each gas distribution chamber is sealed through a sealing structure, a plurality of outlets are arranged on the high-pressure gas storage tank, each outlet is respectively provided with a gas outlet pipeline, and each gas outlet pipeline is sequentially connected with a first gas vent pipeline, an electromagnetic valve, a second gas vent pipeline and a launching tube, all the launching tubes are arranged on the launching tube support;
the launching tube comprises an outer shell, a middle layer structure and an inner shell which are sequentially arranged from outside to inside, the middle layer structure can move axially along the launching tube, a magnet is arranged at an inlet close to the launching tube in the inner shell, a loading opening is formed at a position close to the magnet of the launching tube, a structure is installed in the launching tube through the loading opening, and continuous loading of the structure is realized through horizontal reciprocating motion of the middle layer structure;
rotating the rotating shaft, and supplying gas to the same launching tube one by the inflated sub-air chambers to realize the serial launching of the structures in the same launching tube; the electromagnetic valve is used for controlling the plurality of transmitting tubes to transmit simultaneously, so that the parallel transmission of the structure is realized.
Furthermore, the free end of the middle layer structure extends out of the outlet end of the launching tube, the free end of the middle layer structure is connected with a plane connecting rod mechanism, and the plane connecting rod mechanism drives the middle layer structure to horizontally reciprocate.
Furthermore, the rotary isolation fan blades comprise six fan blades, and the six fan blades divide the high-pressure air storage chamber into six equal air distribution chambers.
Further, the sealing structure is a rubber sleeve or a rubber strip, the free end of each fan blade is sleeved with the rubber sleeve or the free end of each fan blade is provided with the rubber strip; the rubber sleeve or the rubber strip is connected on the fan blade through glue.
Further, a first flow meter is installed on the first vent pipeline, and a second flow meter is installed on the second vent pipeline.
Furthermore, a threaded hole is formed at the inlet of the high-pressure air storage chamber, a pressure gauge is connected to the threaded hole, and an air release valve is mounted on the high-pressure air bottle.
Furthermore, the air inlet pipeline and all the ventilation pipelines are flexible pipelines.
Further, the high-pressure gas cylinder and the gas inlet pipeline, the gas inlet pipeline and the pressure regulating valve, the high-pressure gas storage tank 7 and the pressure regulating valve, the gas outlet pipeline and the first vent pipeline, the first vent pipeline and the electromagnetic valve, the electromagnetic valve and the second vent pipeline and the inner shell of the launching tube are respectively connected through flanges.
Furthermore, a middle layer structure fixing hole is formed in the middle layer structure, a shell fixing hole is formed in the shell, when the structure is launched, the middle layer structure is moved to enable the middle layer structure fixing hole to be opposite to the shell fixing hole, the middle layer structure shields the bullet loading opening, and the cylindrical block is inserted to achieve positioning of the middle layer structure.
Furthermore, the inner shell is longer than the outer shell, so that the inlet end of the inner shell is positioned outside the outer shell, the inlet end of the inner shell is provided with a connecting flange, the outlet end of the inner shell is flush with the outlet end of the outer shell, the outer shell and the inner shell are connected through corresponding bolts, and the bolts are arranged close to the inlet end of the outer shell.
Compared with the prior art, the launching device for the high-speed series-parallel connection water inlet test has the following advantages:
1. according to experimental requirements, a proper high-pressure air storage chamber can be designed, and the number of openings and the distance between the openings of the high-pressure air storage chamber are used for changing the number of structures and the distance between the structures during parallel emission; series emission is realized through the designed emission tube, and variable-angle water inlet can be realized by changing the form of the support; the variable speed water inlet is realized by changing the gas pressure of each compartment of the high-pressure gas storage chamber.
2. The multi-structure series-parallel emission device can realize series-parallel emission of multiple structures, enrich experimental research of high-speed water entry, and provide effective reference for parallel emission and continuous emission design.
3. The self structure of this application and with the test model between the installation simple and easy, the accessible designs different high pressure gas receiver structures in advance in order to satisfy experimental needs, the structure loads conveniently, the part installation is disassembled portably easily, safe and reliable, replaceable use.
Drawings
Fig. 1 is a schematic view of an angle structure of a transmitting device for a high-speed serial-parallel connection water test according to an embodiment of the present invention;
FIG. 2 is a schematic view of another angle structure of a launching device for high-speed series-parallel connection water test according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a high pressure gas storage tank;
FIG. 4 is a schematic view of the launch tube prior to loading the structure;
FIG. 5 is a schematic view of the launch tube after loading with the structure;
FIG. 6 is a schematic view of the connection of the mid-level structure of the launch tube to the planar linkage.
Description of reference numerals:
1-a high-pressure gas cylinder, 2-a gas cylinder support, 3-a gas release valve, 4-an air inlet pipeline, 5-a pressure regulating valve, 6-a pressure gauge, 7-a high-pressure gas storage tank, 8-a gas storage tank support, 9-a first flowmeter, 10-an electromagnetic valve, 11-a second flowmeter, 12-a first ventilation pipeline, 13-a launching tube, 14-a bullet loading port, 15-a launching tube support, 16-a rotating shaft, 17-a rotating isolation fan blade, 18-a gas outlet pipeline, 19-a magnet, 20-a bolt, 21-a middle-layer structure fixing hole, 22-a middle-layer structure, 23-an inner shell, 24-an outer shell, 25-an outer shell fixing hole, 26-a rubber sleeve, 27-a structure and 28-a plane connecting rod mechanism.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The high-speed emission in the application refers to that the high speed is more than 80m/s, and the specific speed is converted according to the pressure of high-pressure air entering a high-pressure air chamber; and the transmitting device of the application can also realize lower-speed transmission.
As shown in fig. 1-6, a launching device for high-speed series-parallel connection water inlet tests comprises a high-pressure gas cylinder 1, a gas cylinder support 2, a high-pressure gas storage tank 7, a gas storage tank support 8, a launching tube support 15 and a plurality of launching tubes 13, wherein the high-pressure gas cylinder 1 is mounted on the gas cylinder support 2, a gas inlet pipeline 4 is respectively connected with the high-pressure gas cylinder 1 and the high-pressure gas storage tank 7, and the high-pressure gas is communicated with the following passages: high-pressure gas in the high-pressure gas storage tank 7 enters from a gas cylinder 1 through a gas inlet pipeline 4, the high-pressure gas storage tank 7 is installed on a gas storage tank support 8, a rotating shaft 16 is arranged in the high-pressure gas storage tank 8, the rotating shaft 16 is connected with a motor to realize rotation and stop, a rotary isolation fan blade 17 is installed on the rotating shaft 16, the rotating shaft 16 is connected with the rotary isolation fan blade 17 through a bearing, the rotary isolation fan blade 17 divides the inside of the high-pressure gas storage tank 7 into a plurality of sub-air chambers, each sub-air chamber is sealed by arranging a sealing structure at the free end of the fan blade, a plurality of outlets are arranged on the high-pressure gas storage tank 7, the number of outlets meets the requirement of parallel emission, the application is provided with six gas outlets, each outlet is respectively provided with a gas outlet pipeline 18, and each gas outlet pipeline 18 is sequentially connected with a first vent pipeline 12, an electromagnetic valve 10, a second vent pipeline and an emission pipe 13, all the launching tubes 13 are mounted on a launching tube support 15;
the transmitting tube 13 comprises an outer shell 24, a middle layer structure 22 and an inner shell 23 which are sequentially arranged from outside to inside, the middle layer structure 22 can move along the axial direction of the transmitting tube, the middle layer structure 22 is filled in the gap between the outer shell 24 and the inner shell 23, a magnet 19 is arranged in the inner shell 23 close to the inlet of the transmitting tube 13, the strength of magnetism can be adjusted through a circuit, and a structural object can be attracted to achieve the fixing effect; a loading port 14 is arranged at the position of the launching tube 13 close to the magnet 19, a structure 27 is arranged in the launching tube through the loading port, and the structure 27 is continuously loaded through the horizontal reciprocating motion of the middle layer structure 22;
rotating the rotating shaft, and supplying air to the launching tubes one by the inflated sub-air chambers to realize the serial launching of the structure; the electromagnetic valves control the plurality of launching tubes 13 to launch the structure at the same time, so that the parallel launching of the structure is realized.
The high-pressure gas bottle 1 provides necessary high-pressure gas for the launching device, and supplies gas for the high-pressure gas storage tank 7 through the gas inlet pipeline 4 and the pressure regulating valve 6, and the high-pressure gas storage tank 7 adopts a cylindrical shell; the pressure regulating valve is a one-way valve.
The free end of the middle layer structure 22 extends out of the outlet end of the launching tube during launching, the free end of the middle layer structure 22 is connected with a plane link mechanism 28, and the plane link mechanism 28 drives the middle layer structure 22 to horizontally reciprocate; the planar linkage 28 is a slider-crank mechanism. The slider of the slider-crank mechanism drives the middle layer structure 22 to horizontally reciprocate.
The rotary isolating fan blades 17 comprise six fan blades, and the six fan blades divide the high-pressure air storage chamber 7 into six equal air dividing chambers; each sub-air chamber is inflated before the experiment, so that the launching time interval of every two structural objects can be greatly reduced, and the serial launching of the structural objects is realized; meanwhile, the air distribution chambers can only aim at one air outlet, and can realize multiple combined modes of parallel emission by matching with the electromagnetic valve.
The sealing structure is a rubber sleeve 26 or a rubber strip to realize air tightness, and the free end of each fan blade is sleeved with a rubber sleeve or the free end of each fan blade is provided with a rubber strip; the rubber sleeve 26 or the rubber strip is glued to the fan blades.
A first flowmeter 9 is arranged on the first ventilation pipeline 12, and a second flowmeter 11 is arranged on the second ventilation pipeline; adjusting the valve by monitoring data of the two meters; the gas flow of each path is controlled by the electromagnetic valve and the gas flowmeter together, so that the gas pressure of each path meets the requirement of experimental design.
The inlet of the high-pressure air storage chamber 7 is provided with a threaded hole, the threaded hole is connected with a pressure gauge 6 for monitoring the pressure of the air distribution chamber, after the experimental requirement is met, a pressure regulating valve 5 on the air inlet pipeline 4 is closed, and the high-pressure air bottle 1 is provided with an air leakage valve 3.
The air inlet pipeline 4 and all the air vent pipelines are flexible pipelines, the angle of the transmitting tube can be adjusted, and meanwhile, the angle and the height of the transmitting tube support 15 are changed to achieve variable-angle transmitting.
The high-pressure gas cylinder 1 is connected with the gas inlet pipeline 4, the gas inlet pipeline 4 is connected with the pressure regulating valve 5, the high-pressure gas storage tank 7 is connected with the pressure regulating valve 5, the gas outlet pipeline 18 is connected with the first vent pipeline 12, the first vent pipeline 12 is connected with the electromagnetic valve 10, the electromagnetic valve 10 is connected with the second vent pipeline, and the second vent pipeline is connected with the inner shell 23 of the transmitting tube 13 through flanges. The flange plates are connected through bolts and are provided with O-shaped sealing rings to ensure air tightness.
Before launching, the middle layer structure 22 is connected through the plane connecting rod mechanism 28, so that the horizontal reciprocating motion of the middle layer structure 22 is realized, the continuous filling of a structural object is realized, the middle layer structure 22 is provided with a middle layer structure fixing hole 21, the shell 24 is provided with a shell fixing hole 25, when the structural object 27 is launched, the middle layer structure 22 is moved to enable the middle layer structure fixing hole 21 to be opposite to the shell fixing hole 25, the middle layer structure 22 shields the bullet loading opening 14, and the cylindrical block is inserted to realize the positioning of the middle layer structure 22; each shot requires filling one structure and each filling of one structure requires a coordinated movement of the middle layer structure 22.
The inner shell 21 is slightly longer than the outer shell 24 so that the inlet end of the inner shell is outside the outer shell 24, the inlet end of the inner shell 21 is provided with a connecting flange, the outlet end of the inner shell 21 is arranged flush with the outlet end of the outer shell 24, the outer and inner shells are connected by corresponding bolts 20, and the bolts 20 are arranged close to the inlet end of the outer shell 24.
The working process of the transmitting device of the invention is as follows:
the air release valve 3 of the high-pressure gas bottle 1 is opened, the pressure regulating valve 5 is opened, the high-pressure gas storage tank 7 is inflated, and when the pressure in the gas distribution chamber of the high-pressure gas storage tank 7 displayed by the pressure gauge 6 in real time meets the experimental requirements, the air release valve 3 and the pressure regulating valve 5 are closed. When the sub-chambers are in series connection and are transmitted, the sub-chambers need to be inflated, specifically, high-pressure gas in a high-pressure gas bottle 1 enters a high-pressure gas storage tank 7, when a pressure gauge 6 displays that the pressure in the sub-chambers meets the requirement, a pressure regulating valve 4 is closed, then a rotating shaft 16 rotates to drive fan blades to rotate anticlockwise, then the next sub-chamber is inflated, and when the inflation operation is carried out, an electromagnetic valve 10 is always kept in a closed state; the high-pressure gas is charged only once in a series emission experiment, so that the waiting time is reduced; after the inflation of all the sub-air chambers is finished, the middle layer structure 22 in the launching tube 13 is driven to move through the plane link mechanism 28, so that the structure 27 falls down from the bullet loading port 14 under the influence of gravity, the magnet 19 can adsorb and fix the structure 27, after other experimental preparations are made, the electromagnetic valve control switch is started, the electromagnetic valve 10 is completely opened in a very short time, high-pressure air in the high-pressure air storage tank 7 rapidly enters the launching tube 13 through a ventilation pipeline and acts on the bottom of the structure 27, and the structure 27 overcomes the attraction of the magnet 19, is accelerated and leaves the launching tube 13, so that the launching of the structure is realized;
when the serial firing is performed, the electromagnetic valve 10 is firstly in a closed state, the middle layer structure 22 is moved through the plane link mechanism 28 to enable the structure 27 to fall and be attracted by the magnet 19, then the middle layer structure 22 is moved to enable the filling opening 14 to be completely sealed, the electromagnetic valve 10 is opened, and the first firing is completed; when the second hair is ready, the electromagnetic valve 10 is closed, the rotating shaft 16 is rotated to enable the other air distribution chamber to be aligned with the air outlet, meanwhile, the middle layer structure 22 is moved to enable the second hair structure object to fall, then the middle layer structure 22 is moved to seal the filling opening 14, the electromagnetic valve 10 is opened to finish the second hair emission, and the like; thereby realizing series emission;
when the parallel emission is carried out, the air distribution chamber can be simultaneously aligned to two rows of air outlets or one row of air outlets, and the parallel emission modes of various combinations can be realized by matching the electromagnetic valve 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A launching device for high-speed series-parallel connection water test is characterized in that: comprises a high-pressure gas cylinder (1), a gas cylinder support (2), a high-pressure gas storage tank (7), a gas storage tank support (8), a transmitting pipe support (15) and a plurality of transmitting pipes (13), wherein the high-pressure gas cylinder (1) is arranged on the gas cylinder support (2), the high-pressure gas cylinder (1) and the high-pressure gas storage tank (7) are communicated through a gas inlet pipeline (4), the high-pressure gas cylinder (1) supplies gas for the high-pressure gas storage tank (7) through the gas inlet pipeline (4), the high-pressure gas storage tank (7) is arranged on the gas storage tank support (8), a rotating shaft (16) is arranged in the high-pressure gas storage tank (8), a rotary isolation fan blade (17) is arranged on the rotating shaft (16), the rotary isolation fan blade (17) separates the inside of the high-pressure gas storage tank (7) into a plurality of sub-gas chambers, each sub-gas chamber is sealed by arranging a sealing structure, a plurality of outlets are arranged on the high-pressure gas storage tank (7), each outlet is provided with an air outlet pipeline (18), each air outlet pipeline (18) is sequentially connected with a first vent pipeline (12), an electromagnetic valve (10), a second vent pipeline and a transmitting pipe (13), and all transmitting pipes (13) are arranged on a transmitting pipe support (15);
the launching tube (13) comprises an outer shell (24), a middle layer structure (22) and an inner shell (23) which are sequentially arranged from outside to inside, the middle layer structure (22) can move axially along the launching tube, a magnet (19) is arranged at an inlet, close to the launching tube (13), in the inner shell (23), a loading opening (14) is formed at the position, close to the magnet (19), of the launching tube (13), a structure (27) is installed in the launching tube through the loading opening, and continuous loading of the structure (27) is achieved through horizontal reciprocating motion of the middle layer structure (22);
rotating the rotating shaft, and supplying gas to the same launching tube one by the inflated gas distribution chambers to realize the serial launching of the structures in the same launching tube; the electromagnetic valves are used for controlling the plurality of transmitting pipes (13) to transmit simultaneously, so that the parallel transmission of the structure is realized.
2. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: the free end of the middle layer structure (22) extends out of the outlet end of the launching tube, the free end of the middle layer structure (22) is connected with a plane connecting rod mechanism (28), and the plane connecting rod mechanism (28) drives the middle layer structure (22) to horizontally reciprocate.
3. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: the rotary isolation fan blades (17) comprise six fan blades, and the six fan blades divide the high-pressure air storage chamber (7) into six equal air distribution chambers.
4. The launching device for high-speed series-parallel connection water test according to claim 3, characterized in that: the sealing structure is a rubber sleeve (26) or a rubber strip, and the free end of each fan blade is sleeved with the rubber sleeve or the free end of each fan blade is provided with the rubber strip; the rubber sleeve (26) or the rubber strip is connected to the fan blade through glue.
5. The launching device for high-speed series-parallel connection water test according to claim 4, characterized in that: a first flowmeter (9) is mounted on the first vent line (12), and a second flowmeter (11) is mounted on the second vent line.
6. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: a threaded hole is arranged at the inlet of the high-pressure air storage chamber (7), a pressure gauge (6) is connected with the threaded hole, and an air release valve (3) is arranged on the high-pressure air bottle (1).
7. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: the air inlet pipeline (4) and all the ventilation pipelines are flexible pipelines.
8. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: the high-pressure gas storage tank is characterized in that the high-pressure gas storage tank is connected between a high-pressure gas bottle (1) and a gas inlet pipeline (4), between the gas inlet pipeline (4) and a pressure regulating valve (5), between a high-pressure gas storage tank (7) and the pressure regulating valve (5), between a gas outlet pipeline (18) and a first vent pipeline (12), between the first vent pipeline (12) and an electromagnetic valve (10), between the electromagnetic valve (10) and a second vent pipeline and between the second vent pipeline and an inner shell (23) of a transmitting tube (13) through flanges respectively.
9. The launching device for high-speed series-parallel connection water test according to claim 1, characterized in that: a middle layer structure fixing hole (21) is formed in the middle layer structure (22), a shell fixing hole (25) is formed in the shell (24), when the structure (27) is launched, the middle layer structure (22) is moved to enable the middle layer structure fixing hole (21) to be opposite to the shell fixing hole (25), the middle layer structure (22) shields the bullet loading opening (14), and the cylindrical block is inserted to achieve positioning of the middle layer structure (22).
10. The launching device for high-speed series-parallel connection water test according to any one of claims 1 to 9, characterized in that: the inner shell (21) is longer than the outer shell (24) so that the inlet end of the inner shell is positioned outside the outer shell (24), the inlet end of the inner shell (21) is provided with a connecting flange, the outlet end of the inner shell (21) is arranged in parallel with the outlet end of the outer shell (24), the outer shell and the inner shell are connected through corresponding bolts (20), and the bolts (20) are arranged close to the inlet end of the outer shell (24).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122948.0A CN113933021B (en) | 2021-09-24 | 2021-09-24 | Transmitting device for high-speed series-parallel connection water inlet test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122948.0A CN113933021B (en) | 2021-09-24 | 2021-09-24 | Transmitting device for high-speed series-parallel connection water inlet test |
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| CN113933021A true CN113933021A (en) | 2022-01-14 |
| CN113933021B CN113933021B (en) | 2022-07-08 |
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| CN114858396A (en) * | 2022-07-04 | 2022-08-05 | 中国飞机强度研究所 | Airplane component high-speed impact test device and method based on multi-caliber launching tube |
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| CN113933021B (en) | 2022-07-08 |
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