Three-stage light gas gun based on hydrogen and oxygen mixed detonation driving

Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of ultra-high-speed impact loading test, in particular to a three-stage light gas gun. Background technique [0002] Light gas cannons can drive projectiles or flying pieces of different materials and shapes to conduct various high-speed and ultra-high-speed collision experiments, research on damage effects of kinetic energy weapons, geospace physics research, spacecraft protection research and material performance under high strain rates It is widely used in research and other fields, and it is the most common high-speed and ultra-high-speed loading method at home and abroad. The three-stage light gas gun adopts a three-stage drive mode. [0003] Foreign three-stage light gas guns are usually driven by gunpowder. The use of gunpowder will cause environmental pollution in the laboratory, and put forward safety requirements for explosives in the laboratory. At the same time, it also increases the difficulty...

AI Technical Summary

Problems solved by technology

The use of gunpowder will cause environmental pollution in the laboratory, and put forward safety requirements for explosives in the laboratory. At the same time, it also increases the difficulty and workload of cleaning the barrel, which not only increases the cost of the experiment, but also affects the efficiency of the experiment.

The existing high-pressure nitrogen-driven three-stage gun has lower pollution than gunpowder, but the firing speed of 8km / s is close to the limit, which requires the nitrogen pressure to be above 18MPa, which is very strict on the manufacturing process of the three-stage gun’s primary target chamber. stringent requirements, and no potential for loading to higher speeds

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