34 results about "Light-gas gun" patented technology

The invention discloses an underwater explosion impact equivalent loading test device and method, and belongs to the technical field of dynamic impact test mechanics, the underwater explosion impact equivalent loading test device comprises a light gas gun system, a combined water shock tube system and a measurement control system, the light gas gun system is a shock wave load loading system of a water shock tube, and the combined water shock tube system is connected with the measurement control system. Comprising a piston, a working table support, a steel pipe, a pressure sensor, a connecting flange, a connecting assembly, a transparent pipe, a double-thread screw assembly, a front panel, a test sample, a rear panel, a working table fixing support and a working table top, and a measurement control system comprises a light gas gun pressurization and emission controller, a high-speed acquisition instrument, a first high-speed camera and a second high-speed camera. The underwater explosion impact equivalent loading test device and the underwater explosion impact equivalent loading test method are compact in structure, convenient to use and suitable for researching underwater dynamic impact protection performance and fluid-solid coupling mechanism of materials or structures in laboratories.

The system and method for decelerating space objects moving at high velocities are provided. The system comprises at least one closed volume containing a combination of gas, liquid, solid particles, or a mixture thereof. The volume can be transported to the targeted location using a range of means, including a chemical gun, light gas gun, electromagnetic coil gun, superconducting quench gun, a rocket, or a combination thereof. The volume is strategically positioned on the trajectory of the moving object. Upon penetrating the walls of the volume, the object passes through it, experiencing deceleration.

The invention relates to a system and a method for measuring ballistic trajectories in a light-gas gun and an artillery, and the system comprises a first microwave source assembly, a first power amplifier, a first circulator, a horn antenna, a second microwave source assembly, a second power amplifier, a second circulator, a linear polarization antenna and a microwave reflection and transmission plate, the directions of microwaves emitted by the horn antenna and the linearly polarized antenna form an angle of 90 degrees, the microwave reflection and transmission plate is arranged on an angular bisector of the angle formed by the horn antenna and the linearly polarized antenna, and the microwave reflection and transmission plate enables short-wavelength microwaves emitted by the horn antenna to be directly transmitted to a target to be measured. And long-wavelength microwaves emitted by the linear polarization antenna can be reflected to a to-be-measured target according to an angle of 45 degrees. According to the system for measuring the ballistic trajectory in the light-gas gun and the artillery, long-wave microwaves are reflected on the front surface of forward gas, short waves are reflected on the surface of a projectile, and therefore long-distance, continuous and simultaneous measurement of the speed of the forward gas and the speed of the projectile is achieved.

The invention relates to the technical field of impact experiment equipment, in particular to a light gas gun loading experiment sample assembling and adjusting device and method.The light gas gun loading experiment sample assembling and adjusting device comprises a power mechanism, a switching module, a sample adjusting frame and a sample frame which are detachably connected in sequence; axis consistent installation of an experimental sample and a gun barrel is achieved in a mechanical connection mode, rapid and accurate matching of relative positions of the experimental sample and the gun barrel is achieved, meanwhile, a power mechanism can be remotely driven to act, the relative positions of the sample and a light path of a synchrotron radiation light source can be remotely and accurately adjusted, and after the experimental sample and the gun barrel are installed and adjusted, the synchronous radiation light source can be accurately adjusted. According to the light-gas gun loading experiment sample assembling and adjusting device, the relative position of a synchrotron radiation light source and an experiment sample is adjusted, the sample assembling and adjusting precision is improved, the influence of the sample assembling and adjusting precision on an experiment result error is reduced, and the assembling and adjusting precision and efficiency can be improved by adopting the light-gas gun loading experiment sample assembling and adjusting device. And the installation and adjustment device is protected.

The application discloses a kind of track protective coating effectiveness verification method, utilize two-stage light gas gun high-pressure experimental platform as high-speed launching device, launch the solid cylinder made of skid shoe material, make it collide with test target body made of slide rail material at a certain angle, compare the impact results when test target body has protective coating and has no protective coating, qualitative analysis is carried out to the effectiveness of protective coating.The application can guide the coating work of the track of hypersonic rocket sled test, improve test efficiency, and ensure test success rate.

The application discloses a plate forming device based on super-high-speed impact hydraulic pressure, which comprises a light gas gun, a cylindrical impact head is arranged on the launching end of the light gas gun, a forming device, the forming device comprises a frame body, a forming platform, a dry-wet dual-state test pipeline, the frame body is arranged correspondingly to the light gas gun, the dry-wet dual-state test pipeline and the forming platform are detachably connected to the frame body, the dry-wet dual-state test pipeline is located between the forming platform and the light gas gun, and a test plate is arranged between the dry-wet dual-state test pipeline and the forming platform, a video image acquisition device, the video image acquisition device is arranged correspondingly to the test plate, a terminal processor, the terminal processor is connected to the video image acquisition device, and the forming platform can realize fixed forming of the plate or test forming limit of the test plate. The application has the functions of production, scientific research and teaching, and provides a new solution for researching material mechanical properties and forming limit under dynamic impact load and realizing efficient manufacturing of precise microstructure.

The invention discloses a plate forming device based on ultra-high-speed impact hydraulic pressure, which comprises a light gas gun, and a cylindrical impact head is mounted at the transmitting end of the light gas gun; the forming device comprises a frame body, a forming platform and a dry-wet dual-state test pipeline, the frame body and the light gas gun are correspondingly arranged, the dry-wet dual-state test pipeline and the forming platform are detachably connected to the frame body, the dry-wet dual-state test pipeline is located between the forming platform and the light gas gun, and the test plate is arranged between the dry-wet dual-state test pipeline and the forming platform; the video image acquisition device is arranged corresponding to the test plate; the terminal processor is connected with the video image acquisition device; wherein the forming platform can realize fixed forming of the plate or test the forming limit of the test plate. The device has the functions of production, scientific research and teaching, and a new solution is provided for studying the mechanical property and the forming limit of materials under the dynamic impact load and achieving efficient manufacturing of precise microstructures.

A gas self-excitation quick intercept valve for light gas gun belongs to the technical field of light / air gun transient loading simulation, and aims to solve the problem that the existing transient loading simulation test causes inaccurate results due to the fact that high-speed gas is loaded to the target together with the elastic body. The scheme is as follows: two rotating shafts are symmetrically arranged in the middle section of the two side plates of the box body, and the rotating shafts are rotationally connected with the top plate and the bottom plate; the intercept plate and the gas self-excitation plate connected at right angles are fixed to each rotating shaft, and the gas self-excitation plate is arranged on the projectile outlet side; the box body plates on the projectile inlet side are all provided with a plurality of exhaust holes with the two rotating shafts as boundaries; in the initial position, the two gas self-excitation plates are folded and the two semicircular notches are combined into a circular hole for the projectile to pass through; the projectile carrying high-speed gas enters the intercept valve, the gas self-excitation plates are quickly rotated to the projectile outlet side under the impact of the high-speed gas, and the two intercept plates are folded to block the channel in the box body, so that the high-speed gas is intercepted and the high-speed gas is diverted to be discharged from the exhaust holes of the plates.

The utility model discloses a rapid pressurization system based on a light gas gun, and relates to the technical field of pressurization systems. The rapid pressurization system based on the light gas gun comprises a cylinder body, an oil tank, an oil pump and a gas source box, a piston is arranged in the cylinder body, an oil cavity and a gas cavity are formed in the two sides of the piston, an oil pumping pipe and an oil inlet pipe are arranged on the outer surface of the oil pump, an oil return pipe is arranged on the outer surface of the oil tank, and a gas inlet pipe is arranged on the outer surface of the gas source box. An exhaust pipe is arranged at the end of the cylinder body, an ejector rod is fixedly connected to the middle of the outer surface of the piston, a first spring is fixedly connected to the end, away from the piston, of the ejector rod, a fixing sleeve and an air pressure sensor are fixedly connected to the inner wall of the air cavity, a sealing ring is arranged on the side of the outer surface of the piston, and a flow guide ring is arranged on the side, away from the piston, of the sealing ring. According to the gas-liquid two-medium coupling driving mechanism, an oil-liquid and gas two-medium coupling driving mechanism is adopted, and the response speed and the energy efficiency of a system are remarkably improved.

The application discloses a kind of three-dimensional deformation field measuring device and measuring method of projectile body in penetration process, it is related to projectile body penetration test technical field, its technical solution key points are: including: light gas gun, for launching solid projectile;Special target store, its lateral wall is equipped with observation window, inside is equipped with target plate and the projectile to be measured fixed on target plate;Three-dimensional digital image acquisition equipment, symmetrically arranged outside observation window, including two high-speed cameras of synchronous trigger, matching lens, high-brightness light source and synchronous trigger;Magnetic speed measuring instrument, set in the tail of the barrel of light gas gun;Data processing equipment is used to receive the image sequence collected by three-dimensional digital image acquisition equipment, based on calibration parameter calculation the three-dimensional displacement field of the surface of the projectile to be measured, full-field strain field and velocity field, visual output deformation evolution process.The application can realize the non-contact, high space-time resolution measurement of three-dimensional dynamic deformation field of projectile body itself in the transient process of projectile body penetrating target plate.

The invention relates to the technical field of light-gas guns, in particular to a light-gas gun capable of automatically controlling diaphragm replacement. According to the technical scheme, the target comprises a target bin and a gun barrel fixedly installed on the target bin, a gas storage chamber is installed on one side of the gun barrel, the target further comprises a connecting part installed between the gas storage chamber and the gun barrel, and the connecting part comprises a gun barrel connecting section fixedly installed on the gun barrel and a transition section fixedly installed on the gas storage chamber. A rotating threaded sleeve and a sliding component are rotationally installed on the transition section, and the sliding component is connected with the connecting component and drives the connecting component to move in the axis direction of the sliding component. According to the invention, based on accurate torque control of the motor driving the rotating gear, and in combination with step-by-step displacement of the power sliding block, the traditional diaphragm replacement process of 1-2 hours of manual disassembly is compressed to be within 15 minutes, so that the working efficiency is greatly improved.

The application relates to the technical field of light gas gun experimental equipment, and discloses a driving gas shunting and projectile support separation integrated device, wherein one end of a gas shunting cylinder body is connected with a launching tube, a shunting channel coaxial with the launching tube is arranged in the gas shunting cylinder body, the diameter of the shunting channel is sequentially reduced by at least three sections, a plurality of gas leakage holes are arranged in the side wall of the gas shunting cylinder body in the circumferential direction, the two side walls of the gas leakage holes are symmetrically and obliquely arranged, and the proximal ends of the two side walls are in communication with the shunting channel; one end of a projectile support separation cylinder body is connected with the gas shunting cylinder body, the other end is connected with a speed measuring device, a separation chamber in communication with the shunting channel is arranged in the projectile support separation cylinder body, an intercepting ring coaxial with the shunting channel is detachably connected in the separation chamber, the inner diameter of the intercepting ring is greater than the diameter of a projectile and smaller than the maximum outer diameter of a projectile support, the application can improve the ballistic consistency and experimental precision, realize forced and efficient separation of the projectile support, realize staged and rapid discharge of the driving gas, and improve the speed measuring precision and equipment safety.

The application belongs to the field of material dynamic mechanical property research, and particularly relates to a light gas gun impact test system with trajectory correction and a test method. The light gas gun impact test system with trajectory correction is provided with an adaptive module at the end of the light gas gun, a buffer pad ring, a trajectory corrector and a stopper are sequentially arranged at the end of the adaptive module towards the direction of the target plate, the trajectory corrector comprises a correction base, a gradual change section and a straight column section, a sample is marked by speckle calibration assembly and is launched by the light gas gun to the target plate, a magnetic speed detector is electrically connected with an oscilloscope, the oscilloscope is electrically connected with a high-speed camera, a voltage pulse signal output by the magnetic speed detector is processed by the oscilloscope and then a trigger pulse signal is output, the high-speed camera starts shooting after receiving the trigger pulse signal, and the impact process of the sample is recorded. The test system and method are detachably connected through a standardized interface, and the universality and scene adaptability are considered, so that the operation standardization and the result reliability are ensured.

The invention relates to the technical field of ballistic trajectory testing, and discloses a light sabot and ballistic trajectory stabilizing device suitable for a light-gas gun system, the light sabot and ballistic trajectory stabilizing device comprises a sabot, the sabot is of a split structure wrapping the bottom of a projectile body, and a plurality of spiral gas guide grooves are formed in the outer circumferential surface of the sabot; the magnetic attraction stabilizing assembly comprises a radial magnetic attraction piece embedded into the inner wall of the projectile support and a magnetic ring arranged at the bottom of the projectile body; the auxiliary falling-off assembly comprises an annular guide plate located on one side of the outlet end of the gun barrel, a cutting edge is arranged between the annular guide plate and the outlet end of the gun barrel, and an inclined face located behind the cutting edge is arranged on the annular guide plate; micro-clearance fit and lightweight design enable the abrasion loss of the gun barrel to be reduced and the service life of equipment to be prolonged; under the dual effects of magnetic attraction fixing and pneumatic stability of the spiral groove, disturbance in the chamber is effectively restrained, and trajectory deviation is reduced; the auxiliary falling-off assembly achieves forced falling off of the sabot, and the sectioning fragments deviate from the target area angle, so that it is ensured that the projectile body flies to the target plate without interference.

The invention discloses a light-gas gun system capable of moving in multiple dimensions, and belongs to the technical field of high-speed impact test equipment, the light-gas gun system comprises a target chamber box body, the target chamber box body is provided with a plurality of target holes along an arc line; the supporting arm is rotationally arranged around the arc center of the arc line, and the supporting arm is provided with a first driving rod for driving the supporting arm to rotate; the gun barrel is arranged on the supporting arm in a sliding mode, the gun barrel is located in the radial direction of the arc line, and the gun barrel is provided with a second driving rod for driving the gun barrel to slide in a matched mode; the combustion chamber is matched with the gun barrel; wherein the supporting arm is adjusted to different rotation angles through the first driving rod, so that the gun barrel is aligned with different target holes for testing, and the purposes that the gun barrel can be suitable for scenes such as material dynamic mechanical property testing and ammunition research and development, and the complex impact working condition is adjusted and simulated through multi-dimensional movement are achieved.

The application discloses a kind of verification methods suitable for epoxy zinc-rich primer protection rocket sled slide rail gouging ability, build rocket sled slide rail gouging protection laboratory simple platform, by reducing hypersonic rocket sled test shoe rail system gouging occurrence condition, in the same condition of gouging occurrence, utilize secondary light gas gun to the slide shoe material 30CrMnSiNi2A sample power is sprayed epoxy zinc-rich primer bainite steel plate and the bainite steel plate without spraying epoxy zinc-rich primer is carried out high-speed oblique impact, and the anti-gouging performance of epoxy zinc-rich primer is verified.The method of the application can reduce laboratory rocket sled slide rail gouging phenomenon with smaller cost, and verify the protection effect of epoxy zinc-rich primer.

A ballistic target based on an electromagnetic catapult-assisted three-stage light gas gun includes a first-stage gas propulsion section, an electromagnetic catapult device, an armature, a first-stage piston, a first-stage high-pressure pump pipe, a first- and second-stage connecting mechanism, a second-stage pump pipe, a second-stage piston, a second- and third-stage connecting mechanism, a projectile, a launch tube, an expansion tank, a test chamber, and a measurement and control system. The first-stage gas chamber releases high-pressure gas to drive the armature and the first-stage piston forward and out of the first-stage gas pump pipe. Within the first-stage electromagnetic pump pipe, the armature pushes the first-stage piston to move and compress the light gas under the combined action of the high-pressure gas thrust and electromagnetic force. The high-pressure light gas in the second-stage gas chamber breaks through the second-stage diaphragm, pushing the second-stage piston to compress the light gas in the second-stage pump pipe. The high-temperature and high-pressure light gas in the third-stage gas chamber breaks through the third-stage diaphragm, driving the projectile at high speed out of the launch tube, through the expansion tank, and into the test chamber. The present invention improves the driving capacity of traditional three-stage light gas guns by several times, and has better and more controllable interior ballistic performance. It is also safer, cleaner, and more efficient.

The present invention provides a ballistic target for a two-stage light-gas gun driven by an electromagnetic catapult, comprising an electromagnetic catapult device, an armature, a piston, a high-pressure pump tube, a primary and secondary connecting mechanism, a projectile, a launch tube, an expansion tank, a test chamber, and a measurement and control system. The electromagnetic catapult device comprises an electromagnetic pump tube, a multi-stage drive coil wound around the electromagnetic pump tube, an excitation power supply for supplying power to the multi-stage drive coil, and a charger for charging the excitation power supply. The primary and secondary connecting mechanism comprises a secondary air chamber and a secondary diaphragm. The armature and piston are built into the inlet end of the electromagnetic pump tube. The projectile is built into the inlet end of the launch tube. The armature is subjected to electromagnetic force in the pulsed magnetic field of the electromagnetic catapult device, pushing the piston to compress the light gas. The high-temperature and high-pressure light gas breaks through the secondary diaphragm, driving the projectile to fly out of the launch tube at high speed through the expansion tank and into the test chamber. The present invention uses electromagnetic catapult as the primary drive of the two-stage light-gas gun, which improves the driving capacity by several times over that of traditional power sources, while being safer, cleaner, more efficient, and more controllable.

The application discloses a light gas gun loading-based dynamic explosion shock wave effect simulation device and method, and aims at solving the problems that the prior art cannot accurately control the initial velocity of ammunition and cannot make the ammunition explode at a predetermined position. Specifically, the device comprises a light gas gun, a shell support arranged at the outgoing end of the light gas gun, a shell embedded in the shell support, and a large coil arranged at a predetermined position and corresponding to the outgoing end of the light gas gun. The light gas gun is used for emitting high-pressure gas to push the shell support and the shell in the shell support to pass through the large coil. The shell comprises a small coil, a detonator and ammunition. The two ends of the small coil are respectively connected with the lead wires led out from one end of the detonator. The other end of the detonator is connected with the ammunition and used for detonating the ammunition. The large coil is connected with a high-voltage power supply.

The invention discloses a two-stage light air gun projectile acceleration device and method, and belongs to the technical field of nuclear fusion projectile injection. The device comprises a high-pressure air source, a high-pressure reducing valve, a high-pressure air inlet valve, a high-pressure surge tank, a high-pressure quick valve, a vacuum pump, a buffer tank, an air release valve, a pump pipe, a piston, a back pressure valve, a stop valve, a low-pressure reducing valve, a low-pressure air inlet valve, a low-pressure surge tank and a low-pressure quick valve. A piston is arranged in the pump pipe and divides the pump pipe into a high-pressure side and a low-pressure side; the high-pressure side is connected with a high-pressure surge tank through a high-pressure quick valve and is also connected with a vacuum pump through an air release valve and a buffer tank; the low-pressure side is connected with a stop valve through a back pressure valve and is also connected with a low-pressure surge tank through a low-pressure quick valve; the high-pressure surge tank is connected with a high-pressure air source through a high-pressure air inlet valve and a high-pressure reducing The low-pressure surge tank is also connected with the high-pressure air source through a low-pressure air inlet valve and a low-pressure reducing valve The rear side of the stop valve is connected with a launching gun barrel, and shots are arranged in the launching gun barrel. Continuous high-speed launching of the solid projectile can be achieved.

The application discloses a penetration-explosion combined loading method under a scaled condition. The penetration-explosion combined loading method is combined by a two-stage light gas gun and acid silver acetylide photosensitive explosive, penetration-explosion combined loading is realized by the penetration of a projectile into a metal foil to generate a fragment cloud to splash and initiate the explosive, and the problem that penetration and explosion cannot be simultaneously or combined loaded in the scaled weapon experiment is solved.

This invention discloses a device and method for synchronously testing the transient ignition temperature and reaction process of explosives, relating to the field of explosive testing technology. The key technical features include: a light gas gun; a magnetic velocity measurement system installed at the muzzle of the light gas gun; a protective target chamber with a fixed target plate inside, the sample to be tested being fixed at the center of the fixed target plate; a high-speed infrared radiation thermometer; a high-speed camera; an optical path integration system including a prism and / or a reflector; and a synchronous trigger connected to the magnetic velocity measurement system. This invention enables the synchronous, non-contact acquisition of the transient surface temperature history of explosives under high-speed impact loading and dynamic images of their ignition and combustion processes, thereby accurately determining the impact ignition temperature threshold of the explosive and revealing the correlation mechanism between the ignition process and temperature evolution.

The invention relates to the technical field of light-gas guns, in particular to a light-gas gun with an automatic gun barrel cleaning device. According to the technical scheme, the cleaning device comprises a cleaning system, the cleaning system comprises a rotating component, a power component for driving the rotating component to rotate and a bracket system for supporting the rotating component, and protective covers are fixedly installed on the outer sides of the rotating component, the power component and the bracket system. The single-time cleaning circulation consumption is short, compared with manual operation, the efficiency is improved, a nylon brush physical scraping and double-air-hole directional airflow composite mode is adopted, straight hole radial jetting chipping stripping and rotating hole spiral airflow winding conveying are adopted, synchronous recycling is conducted at a gun barrel outlet in combination with a dust collector, and the pollutant removal rate is improved.

The invention relates to a high-speed closing device suitable for preventing a light-gas gun from following airflow and fragments, and relates to the field of light-gas gun launcher equipment, the high-speed closing device comprises a mounting seat, a baffle, a tension spring, an electromagnet and a reset wrench, the mounting seat is fixedly connected in a cavity between a light-gas gun bullet channel through hole and a separation hole; a separation hole is formed between the ballistic through hole and the separation hole so that a model launched by the light-gas gun can fly into the separation hole from the ballistic through hole, one end of the baffle is hinged to the mounting base so as to cover the separation hole after rotating, one end of the tension spring is fixedly connected with the mounting base, and the other end of the tension spring is fixedly connected with the baffle so that the baffle can be pulled to the separation hole within 30 ms; the electromagnet is fixedly connected to the position, above the baffle, of the mounting base so as to limit the baffle to move towards the separation hole, one end of the reset wrench is hinged to the baffle so as to enable the baffle to rotate away from the separation hole, and the device has the advantage that interference airflow and fragments caused by light-gas gun launching in the ballistic target test can be rapidly restrained.

The present application relates to the technical field of aiming at small space and large mass micro-objects, based on the principle of comparison and complement, a four-hole experiment and joint diagnosis method is designed in a light gas gun loading platform, including: 1, designing a four-hole experiment device; 2, an Asaywindow signal processing method suitable for studying the mass of large mass micro-objects is proposed, compared with the traditional algorithm, the accuracy is greatly improved; 3, a PDV data inversion algorithm suitable for studying the velocity of multiple particles is proposed, compared with the traditional algorithm, the secondary velocity and noise can be filtered out, and the signal-to-noise ratio is improved. In the method, the purpose of pre-depositing metal powder is two, first, artificially controlling the mass of large mass micro-objects, second, the calculation accuracy of Asaywindow can be quantitatively evaluated. The present application diagnoses the velocity and area density of micro-objects in situ, can construct the three-dimensional micro-objects evolution mechanism, and has high scientific and engineering value.

The present invention discloses a device for testing the strength of a carbon fiber rotor of a rotating machine, comprising a light gas gun connected to the rotating machine via a flexible connector. The light gas gun comprises an air chamber and a side loading chamber connected via a pipeline, and a solenoid valve is provided on the pipeline. The outlet of the side loading chamber is connected to one end of a launch tube, and the other end of the launch tube is connected to the flexible connector. By changing the air chamber pressure, the present invention can effectively control the speed of the projectile, apply different impact energies to the rotor, and ensure that the rotor fails. By using a flexible part to connect the light gas gun and the rotating machine, the rotation angle after the machine fails can be measured, and the strength of the carbon fiber rotor of the rotating machine can be quantitatively calculated, effectively measuring the strength of the rotating rotor, and meeting the needs of the existing technology.

The present invention discloses a light gas gun flyer pressurization device and method, which relates to the fields of impact dynamics and shock wave physics. The device comprises a light gas gun, a detonation driver, flyers, and a target plate. The target plate is arranged at the right end of the detonation driver, and the detonation driver is arranged at the right end of the light gas gun. Flyers are arranged at the end of the light gas gun, between the detonation driver and the target plate. The flyers include a first-stage flyer, a gradient flyer, and a second-stage flyer. The centers of the second-stage flyer, the gradient flyer, and the first-stage flyer are located at the same horizontal height. The present invention adopts the above-mentioned light gas gun flyer pressurization device and method. Based on the impact loading platform of light gas guns such as first-stage gas guns, second-stage gas guns, and hydrogen-oxygen guns, the device and method can significantly increase the speed and impact pressure of the target by adding a detonation driver and gradient flyers to the tail section of the launch tube without changing the structure and launch process of the light gas gun. Compared with a three-stage gun, the experimental cost can be significantly reduced.

The present invention provides a large-caliber ballistic target driven by an electromagnetic catapult, comprising an electromagnetic catapult device, an armature, a model, an expansion tank, a test chamber, a vacuum system, and a measurement and control system. The electromagnetic catapult device comprises a launch tube, a multi-stage drive coil wound around the launch tube, and an excitation power supply for supplying power to the multi-stage drive coil; the launch tube, expansion tank, and test chamber are connected in sequence; the launch tube is equipped with an armature and a model, with the armature located behind the model; the launch tube, expansion tank, and test chamber are filled with test gas; the excitation power supply discharges step by step through the multi-stage drive coil to generate a pulsed magnetic field, and the armature moves under the action of electromagnetic force and propels the model to be launched at high speed through the expansion tank into the test chamber. The present invention adopts a one-stage electromagnetic catapult drive method, which is safer and cleaner than gunpowder, hydrogen-oxygen detonation, and other methods; the model size is larger than that of a two-stage or three-stage light gas gun; and a multi-stage coil energization and single-stage independent adjustment method can be used to optimize interior ballistic characteristics and achieve "soft launch."

The invention relates to the technical field of space debris protection, in particular to a satellite cable space debris protection test device which comprises a first clamping plate, a second clamping plate, a cable and a protection structure. The protection structure and the cable are clamped and fixed by means of the first clamping plate and the second clamping plate so as to form the test target. And the aluminum bullets are launched through the second-stage light-gas gun. And a projectile passes through the projectile penetration hole and impacts on the protection structure, so that a satellite cable space debris protection test is completed on the ground. The protection capability of the protection structure is evaluated through test device manufacturing, test method designing and test result failure analysis. And according to a specific failure criterion adopted by the satellite cable, judging whether the test parameters adopted by the impact cause cable failure or not.

The present application relates to a kind of tungsten alloy based on light gas gun impact strengthening and application.The tungsten phase of the tungsten alloy obtained by the present application has dislocation and dislocation entanglement, and grain refinement occurs in γ-(Ni, Fe) binder phase, the size of the refined grain is less than or equal to 150nm, and twin crystal is generated, and the total area of twin crystal accounts for more than 1 / 3 of the binder phase area;Wherein the dislocation density is greater than or equal to 10 8 / mm 2 , the dislocation entanglement density is greater than or equal to 10 5 / mm 2 . The tungsten alloy includes, by mass percentage: nickel 3-11%; iron 1-5%; the balance is tungsten and unavoidable impurities.The present application can control the microstructure in tungsten alloy by controlling the type of collision pair, target plate thickness, projectile diameter and impact velocity and other parameters during light gas gun loading, so that the tungsten alloy can be strengthened under a certain impact pressure without layer cracking damage.The present application has reasonable structure design, simple and controllable process, and the obtained product has wide application.