99 results about "Light-gas gun" patented technology

The invention discloses a small two-stage light-gas gun and relates to a light-gas gun. The small two-stage light-gas gun comprises a cylinder barrel, a pressure transmitting tube, a pressing column, a launching tube, a piston handle, a pressure transmitting body, a membrane, a membrane rupturing device, a first sealing ring, a metal sealing ring, a support and a plurality of supporting seats; a piston on the piston handle is in sliding contact with the inner circumferential surface of a gas chamber; one end of the pressure transmitting tube is connected with a gas port in a threaded manner, and the pressure transmitting tube is hermetically connected with the pressing column; the pressure transmitting body is mounted in the pressure transmitting tube; the first sealing ring and the metal sealing ring are mounted in a mounting groove from the inside to the outside, the membrane is hermetically connected with the membrane rupturing device, and the membrane rupturing device is hermetically connected with the launching tube; the cylinder barrel is mounted on the support, and the pressure transmitting tube and the launching tube are respectively detachably connected onto the supporting seats. The small two-stage light-gas gun has the advantages that problems that an existing light-gas gun is driven by gunpowder at a primary stage, accordingly, environments are polluted, occupied space is large, sealing cannot be carried out in a membrane rupturing procedure implemented by the aid of high-pressure gas and the bullet launching speed cannot be increased are solved, and the small two-stage light-gas gun is used in fields of spacecrafts or research on material performance and the like.

The invention relates to a light-gas gun pneumatic separation sabot, and aims at solving the problems that for an existing sabot, an additional device is needed to conduct separation on the sabot, the effect is not ideal and the cost is increased. The light-gas gun pneumatic separation sabot is composed of an upper supporting disc, a lower supporting disc and a base plate; the upper supporting disc and the lower supporting disc are two corresponding semi-cylinders. An upper half bullet hole is formed in the center of the upper supporting disc, and the middle of the upper half bullet hole is hollowed out to be of a hollow structure; the lower supporting disc and the base plate are formed to be a whole, a lower half bullet hole is formed in the center of the lower supporting disc, and the middle of the lower half bullet hole is hollowed out to be of the hollow structure; two seal grooves are carved on the base plate. The upper half bullet hole of the upper supporting disc corresponds to the lower half bullet hole of the lower supporting disc, a semicircle notch of the upper supporting disc is engaged with a boss of the lower supporting disc, under the condition of not adding a separating device, automatic separation of the sabot and a bullet is achieved through air resistance in a target chamber, and the light-gas gun pneumatic separation sabot has the advantages of improving the external ballistic property of the bullet and reducing the firing cost.

The invention belongs to the technical field of light gas gun experiments, and particularly relates to a light gas gun driven through hydrogen and oxygen mixed gas detonation, in particular to a two-stage light gas gun driven through hydrogen energy. According to the technical scheme, the two-stage light gas gun driven through hydrogen energy comprises a combustor, a gas injection device, an ignition device, a pump pipe, a high-pressure cone section, a transmitting pipe, a target chamber and a magnetic speed testing device, wherein the ignition device is installed at one end of the combustor, the other end, opposite to the end with the ignition device, of the combustor is connected with the pump pipe, and a pump pipe membrane and a pump pipe membrane breaker are arranged at the junction; the gas injection device is used for injecting hydrogen, oxygen and inert gas into the combustor; a piston is arranged in the pump pipe; the large-diameter portion of the high-pressure cone section is connected with the pump pipe; the small-diameter portion of the high-pressure cone section is connected with the transmitting pipe, and a transmitting pipe membrane and a transmitting pipe membrane breaker are arranged at the junction; shots are arranged in the transmitting pipe, and one end of the transmitting pipe is located in the target chamber; and the magnetic speed testing device is installed at the tail end of the transmitting pipe and connected with an oscilloscope. The two-stage light gas gun is driven through hydrogen energy instead of gunpowder, damage to the gun is small, no particular product is generated, and a gun barrel can be cleaned conveniently after experiments.

A three-level light-gas gun driven by compressed nitrogen comprises a primary gas chamber, a primary pump tube, a secondary gas chamber, a secondary pump tube, a tertiary gas chamber and a transmitting tube. The primary gas chamber is connected with the primary pump tube, and a quick opening valve is arranged between the primary gas chamber and the primary pump tube; the primary pump tube is connected with the secondary gas chamber; the secondary gas chamber is connected with the secondary pump tube, and a secondary diaphragm is arranged between the secondary gas chamber and the secondary pump tube; the secondary pump tube is connected with the tertiary gas chamber; and the tertiary gas chamber is connected with the transmitting tube, and a tertiary diaphragm is arranged between the tertiary gas chamber and the transmitting tube. A three-level driving mode is adopted, energy utilization efficiency among levels is improved, a severe gas environment in a gun body is improved, and ablation risks of the gun body are reduced; the secondary gas chamber and the tertiary gas chamber are of straight barrel type structures or barrel structures with large cone angles, and the energy utilization efficiency is improved; and a replaceable ablation ring is arranged at the front end of the transmitting tube, the ablation risks of the gun body are reduced, and experimental cost of super-speed transmission is greatly reduced.

The invention discloses a novel high-speed light-gas gun muzzle bullet-separating vibration damping system. The system comprises a bullet-separating device cavity connected with a high-speed light-gas gun barrel via threads, and a viscoelastic high-damping rubber gasket and an elastic supporting baffle connected with the bullet-separating device cavity in sequence via a plurality of positioning shafts, each positioning shaft is sleeved by a spiral spring group, the spiral spring group of each positioning shaft is segmented into two parts via a spiral spring separating plate sleeving the positioning shafts, and end parts of the positioning shafts, far away from the bullet-separating device cavity, are connected with double-cylinder bullet-separating vibration dampers via threads. The high-speed light-gas gun muzzle bullet-separating vibration damping system is advantageous in that the occupied space is small, the mass is small, the system is detachable and portable, a bullet holder can be recycled, and the buffer effect is good; the bullet-separating vibration damping system and the barrel and the double-cylinder bullet-separating vibration dampers and the positioning shafts are both connected via the threads so that the dismounting is facilitated; the impact effect on a bullet-separating device by the bullet holder is alleviated via vibration damping spiral springs; and rapid attenuation of the vibration of the bullet holder is realized via the viscoelastic high-damping rubber gasket and the double-cylinder vibration dampers.

The invention discloses an ultra-high-speed gram-magnitude spherical projectile transmitting device comprising a two-stage light gas-gun, an extension section and a three-stage accelerating cavity, wherein one end of the extension section is fixedly connected with an outlet of the two-stage light gas-gun, the other end of the extension section is fixedly connected with the connection end of the three-stage accelerating cavity, the three-stage accelerating cavity is designed with a two-section inner diameter, an annular PC resin sleeve is arranged on an annular boss in the cavity towards the extension section, and a high explosive is embedded into the PC resin sleeve; an accelerating unit transmitted by the two-stage light gas-gun comprises a projectile holder, spherical projectiles and annular steel sheets, wherein the projectile holder is in a cylindrical structure, the top of the cylindrical structure is provided with a cylindrical projective end, the annular steel sheets are in sleeve joint with the projective end and are bonded on the front end surface of the projectile holder, and the spherical projectiles are bonded at the projective end of the projectile holder. The ultra-high-speed gram-magnitude spherical projectile transmitting device not only can accelerate gram-magnitude spherical projectiles to 10km/s, but also can ensure that the spherical projectiles are not overheated, has the last length to diameter ratio L/d near 1 and has no primary flyer fragments to follow in order to ensure the effects of space fragment protective structure optimization design and performance evaluation impact test.

Disclosed is a high altitude space launcher system for transferring payloads from surface to orbit at a significantly lower cost than conventional rockets. It comprises a aerostat lifted one stage light gas gun operating in stratosphere that shoots rocket assisted projectiles containing payload at near orbital velocities to a low angle trajectory. Alternatively, to launch acceleration sensitive payloads such as astronauts the light gas gun is replaced with a muzzle loaded conventional gun that shoots a single stage rocket at a much lower velocity. The system is mostly static structure, attached to a tether-elevator that moors it to land or a ship and provided it with electricity and lifts the projectiles to the gun.

A rotatable light-gas gun device relates to a light-gas gun and aims at solving the problems of an existing screw rod type rotatable light-gas gun that the utilization is inconvenient, the rotary speed is slower, the working efficiency is lower and the adaptability is poor. The rotatable light-gas gun device comprises a gas chamber, and further comprises an emission tube, a sabot separation device, a supporting platform, a bidirectional hydraulic oil cylinder, a base bracket, an angle transducer and two tachometers, wherein the gas chamber, the emission pipe and the supporting platform are located above the base bracket; the gas chamber and the emission pipe are fixedly arranged on the upper surface of the supporting platform; the sabot separation device comprises a sleeve bucket and a tapered cylinder which are integrally molded; one end of the emission pipe and the gas chamber are communicated and are detachably connected; the other end of the emission pipe is connected with the sleeve bucket; the tapered cylinder is arranged in the emission pipe; the angle transducer is mounted on the base bracket; one end of the bidirectional hydraulic oil cylinder is rotationally connected with one end of the supporting platform, and the other end of the bidirectional hydraulic oil cylinder is rotationally connected with the base bracket. The rotatable light-gas gun device is used for the fields including space vehicles or material performance researches and the like.

The invention belongs to the technical field of ultra-high-speed impact loading test, in particular to a three-stage light gas gun. The technical scheme of the three-stage light gas cannon driven by hydrogen-oxygen mixed detonation is: the ratio of the inner diameter of the first-stage pump tube to the inner diameter of the second-stage pump tube is 2 to 4, and the ratio of the inner diameter of the second-stage pump tube to the inner diameter of the launch tube Between 3 and 5; the aspect ratio of the primary pump tube is 3 to 5, the aspect ratio of the secondary pump tube is 4 to 7, and the aspect ratio of the launching tube is 1 to 2; the cone angle of the primary high pressure cone section The cone angle of the secondary high-pressure cone section is 5°-25°; the combustion chamber is filled with a mixture of hydrogen, oxygen and nitrogen, and the primary pump tube and the secondary pump tube are respectively filled with hydrogen gas to launch The tube is vacuumed. The invention adopts hydrogen-oxygen mixed gas as a driving source, has stronger loading capacity, low pollution, and stably launches a projectile with a mass of 1g at a speed exceeding 10km/s.

The invention discloses a laser light curtain blocking type speed measuring system for measuring light-gas gun millimeter-level bullet speed and belongs to the field of ground superspeed crash simulation experiments. The problem that an existing light-gas gun millimeter-level bullet speed measuring method is low in accuracy and low in success rate, repeated tests are needed, and accordingly testing cost is high is solved. The system comprises a laser velocimeter, a laser emitting device, a laser light curtain receiving device, a speed measuring signal display device and a speed measuring channel. The outlet end of a light-gas gun bullet launching device is connected with the speed measuring channel, the laser emitting device and the laser light curtain receiving device are arranged on the opposite faces of the speed measuring channel, a speed measuring signal output end of the laser light curtain receiving device is connected with a speed measuring signal input end of the laser velocimeter, and a display signal output end of the laser velocimeter is connected with a display signal input end of the speed measuring signal display device.

A stage light gas gun system and method capable of having a variable power output to match a specific use or application. The light gas gun uses a high pressure hydraulic oil system to provide a propulsive force behind two-stage piston system that is used to compress a light gas. The light gas gun may include a punch formed on the second piston for piercing a rupture disk at a pre-determined point in order to provide predictable performance.

The invention discloses a high-speed cutting experiment device based on a light-gas gun loading technique. The high-speed cutting experiment device comprises a light-gas gun power loading mechanism, a cutting mechanism, a fixing mechanism and an arresting mechanism, wherein the light-gas gun power loading mechanism is used for pushing the cutting mechanism to fly along a preset orbit at preset speed; the cutting mechanism is used for cutting a workpiece to be processed at high-speed; the fixing mechanism is used for fixing the workpiece to be processed; the arresting mechanism is used for receiving the cutting mechanism which completes cutting; and the light-gas gun power loading mechanism, the cutting mechanism, the fixing mechanism and the arresting mechanism are sequentially arranged along an axis. By adjusting the air pressure of a light-gas gun, the mass of a bullet or the initial position of the bullet, very wide cutting speed can be obtained; and by using the device for high-speed cutting experiments with cutting speed which reaches 30m/s to 150m/s, the demands of the high-speed cutting experiments of most materials can be met.

The invention belongs to the technical field of ultra-high-speed launching test experimental equipment, and discloses a gas detonation driven ultra-high-speed launching system in order to overcome the defects that gunpowder is large in molecular mass, the sound velocity is low, products are toxic, and transportation and storage are limited. A launching main body is sequentially connected with a detonation pipe, a compression pipe, a film clamping machine and a launching pipe; the launching main body is installed on a guide rail, and the guide rail is fixedly installed on a supporting frame; and the front end of the launching main body is connected with an oxyhydrogen inflation system through an ignition pipe, the rear end of the launching main body is connected with a test bin through a sealing device, the test bin is connected with a buffer box, and the buffer box is connected with a vacuum system. According to the gas detonation driven ultra-high-speed launching system, a detonation driven two-stage light gas gun technology adopting oxyhydrogen detonation as driving energy instead of the gunpowder is a low-cost and environment-friendly gas gun driving technology without needing initiating explosive devices, and higher efficiency and good launching repeatability are achieved.

The invention discloses a method for generating a half-sine acceleration pulse waveform in a strong impact test. The method comprises: a light gas cannon system, projectiles, an airborne data recorder, a storage type acceleration sensor, a spring unit and a computer system. The airborne data recorder under test is installed in the projectile. At the same time, a storage type acceleration sensor is installed in the airborne data recorder under test. The spring unit is fixed on the guide rail of the light gas gun, and the projectile is installed at the position when the light gas gun is fired. Open the launch control valve of the light gas gun, launch the projectile, and collide with the spring unit after the projectile exits the muzzle; adjust the spring stiffness and the quality of the projectile to obtain the required pulse waveform width of the half-sine acceleration for the strong impact test, and adjust the speed of the projectile. The amplitude of the half-sine acceleration pulse waveform required for the strong impact test can be obtained. The invention has great significance for the performance test of various airborne accident recorders, has wide application range, is convenient to operate, and saves manpower, material resources and financial resources.

The invention discloses an experimental system and a method for simulating a composite load of an explosion shock wave and a single fragment. The method comprises steps of: determining parameters, such as the density and the length of a foamed aluminum projectile, the diameter and the depth of an opening, the length and the diameter of a fragment simulated projectile, and the launch speed of a composite projectile, according to the composite load parameters of the shock wave and the fragment desired simulated; preparing a composite projectile based on the determined composite projectile parameters; and ejecting the prepared composite projectile out of the primary light gas gun at the determined speed, thereby forming a composite load of the shock wave and the single fragment desired simulated. According to the experimental system and the method for simulating the composite load of the explosion shock wave and the single fragment a method for scientific researchers and engineering designers to simulate the explosive power of an explosive device with a shell is provided. The method can be widely applied to the simulation test of explosive impact loads in the fields of the transportation, the safety protection, the military, and the like; can effectively save the test cost; and has considerable economic benefits.

The invention discloses a sabot capable of realizing pneumatic separation through muzzle cutters, and relates to a sabot. By adopting the sabot disclosed by the invention, the problems of a current segmented fractured sabot that close match and integral sealing cannot be realized among segments, so that the stability of accelerated movement of the sabot and a bullet in a bore is affected; and interference can easily occur among the segments during separation of the sabot, so that the speed of the bullet is affected by separation of the sabot are solved. According to the sabot, the upper and lower segments of the sabot are formed by cutting the same rotary body along a symmetrical surface, and the two segments are matched with each other at a tail part divergent conic section through divergent arc teeth; matched surfaces of the upper segment and the lower segment are separately coated with a thin layer of rubber; the front and rear cylindrical sections of the sabot are separately provided with an annular groove; after the upper segment is matched with the lower segment, the two annular grooves are separately provided with a sealing ring, so that the sabot can be arranged in the bore in a slidable manner; the multiple muzzle cutters are arranged on the outer surface of the bore in the outlet direction; and the sealing rings are cut when the sabot leaves the bore, so that pneumatic separation is realized after the sabot leaves the bore. The sabot disclosed by the invention is applicable to the experiment of shooting a subcaliber bullet with a light-gas gun.

The invention provides a novel two-stage light-gas gun driven by high pressure air and belongs to the technical field of light-gas gun experiments. The novel two-stage light-gas gun mainly comprises asupport, a first-stage air chamber, a first-stage air chamber electromagnetic valve, a trigger electromagnetic ball valve, a second-stage air chamber, a large piston, a small piston, a launching pipe, an air release device and the like. A two-stage air chamber power source is adopted, the second-stage air chamber is divided into a large piston section and a small piston section, the two inside pistons are in rigid linkage, in the initial state, the first-stage air chamber and the small piston section of the second-stage air chamber are filled with high pressure air, storage and release of thehigh pressure air are controlled by the electromagnetic valve, and thus under the circumstance that initiating explosive devices, hydrogen and other flammable and explosive gases cannot be provided,superspeed flying of an object is achieved through air compression loading. The novel two-stage light-gas gun is safe and reliable, superspeed flying of the object is achieved with a compressed air method, experiment cost is low, and operation is safe, simple and convenient.

The invention discloses a combustion light gas gun driven by convergent shock wave reflection induced detonation, which comprises a driving section, a driven section, a convergence section, a gas injection device, a launching tube and a target chamber. A pipe body of the driving section is provided with a gas injection hole, one end of the gas injection hole is closed, the other end of the gas injection hole is connected with the driven section, and a diaphragm is arranged at the connection part; a pipe body of the driven section is provided with a gas injection hole; the large diameter part of the convergence section is connected with the driven section, the small diameter part of the convergence section is connected with the launching tube, and the connection part is provided with a launching tube membrane; the gas injection device is used for injecting hydrogen gas and nitrogen gas into the driving section, and injecting hydrogen gas, oxygen gas and nitrogen gas into the driven section and the convergence section; a projectile is arranged in the launching tube, and one end of the projectile is positioned in the target chamber. The light gas gun is formed by inducing detonation after the shock wave is converged and reflected after the membrane is broken, the fuel chemical energy is used for replacing gunpowder or compressed gas for driving, the operation efficiency is high, and the pollution is small; due to the absence of a piston, the structural requirements and damage are smaller and the operating time is only on the order of milliseconds.

The invention relates to the technical field of combustible gas detonation experiment devices, and provides an inclined detonation experiment system based on a gas detonation driving superspeed launching device. A secondary light gas gun unit is included, the secondary light gas gun unit is connected with an inclined detonation experiment cabin unit and an igniter, the inclined detonation experiment cabin unit is provided with a high-speed photography system, the inclined detonation experiment cabin unit is filled with combustible mixed gas before an experiment is started, and the igniter, the inclined detonation experiment cabin unit and the high-speed photography system are controlled by a computer system; and before the experiment is started, the inclined detonation experiment cabin unit is filled with combustible mixed gas according to a preset working condition and is statically placed, so that the state of the combustible mixed gas is accurately controlled, the combustible mixed gas does not react before the experiment is started, the property of the combustible mixed gas is accurately measured, the purity degree and sufficient and uniform mixing of the combustible mixed gas are guaranteed, and the detonation process of inclined detonation is observed through the high-speed photography system.

The invention discloses a composite ignition type combustion light gas gun. The composite ignition type combustion light gas gun comprises a drive section, a driven section, a convergence section, anemitting tube and an ignition control system, wherein one end of the drive section is sealed, and the other end of the drive section is connected to the driven section, and a joint is clamped with a diaphragm; the tube body of the driven section is equipped with a pressure sensor; the front end of the convergence section is connected to the driven section, the rear end of the convergence section is connected to the emitting tube, and the joint of the rear end and the emitting tube is clamped with a diaphragm, and an igniter is mounted on a tube body; a shot is placed on a position, close to the diaphragm, in the emitting tube; and the ignition control system comprises a pressure sensor, a charge amplifier, a digital delay pulse generator. The light gas gun utilizes a composite ignition form, adopts mutual action between detonation waves induced by convergence shock wave reflection and detonation waves forcibly detonated by the igniter to generate intense shock waves, then, the intenseshock waves chase after the shot and are reflected, so that shot-bottom pressure is instantaneously increased, and a gas gun system with higher operation efficiency is developed with a lower price.

The invention discloses a method for preparing niobium aluminum alloy through shock compression. The method comprises the following steps of uniformly mixing aluminum powder and niobium powder; weighing the uniformly mixed powder according to set mass, and using a tablet machine for prepressing the powder into a tablet; placing the tablet into a recovery box, screwing up the recovery box, and then placing the recovery box into a high-mass steel frame; using a light-gas gun for driving a flyer plate to impact the recovery box, carrying out shock compression acting on the tablet through a produced shock wave, forming a high-temperature high-pressure environment, and preparing to obtain the niobium aluminum alloy; and using a turning-lathe for taking the niobium aluminum alloy out from the recovery box, and grinding off impurities on the surface of the niobium aluminum alloy. According to the method for preparing the niobium aluminum alloy through shock compression provided by the invention, the characteristic that the preparation of the niobium aluminum alloy is exothermic reaction is utilized, and the advantages of rapid shock-compression loading time of the shock-compression light-gas gun, uniform pressure distribution, fine product granularity, good sintering property and the like are combined, so that high temperature and high pressure can be produced within dozens of nanoseconds to hundreds of nanoseconds so as to prepare the niobium aluminum alloy.