Arc suppression and silencing device for electromagnetic rail gun

Abstract

The invention discloses an arc suppression and silencing device for an electromagnetic rail gun. The arc suppression and silencing device is composed of an impedor and a sleeve with an inner layer grid structure, the impedor is installed at a gun muzzle and conducts currents, and the sleeve is used for isolating and absorbing electric arcs and noise. According to a designed sleeve type gun muzzle arc suppresser and silencer, based on the magnetic flux compression and follow current principle, the current flowing through an armature when the armature goes out of a bore is greatly reduced, generation of electric arcs is reduced, and meanwhile arc breaking, arc absorbing and sound absorbing structures are designed so that flash and noise of the gun muzzle can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of electromagnetic launch, in particular to an arc suppression and noise reduction device for an electromagnetic rail gun. Background technique [0002] Electromagnetic launch is a technology that uses electromagnetic field and high current to generate electromagnetic force to drive the armature and carrier to move at high speed. Electromagnetic launch is often used to launch aircraft, projectiles, etc. At present, the structure of the track-type electromagnetic launcher is mainly composed of a conductive track, an armature between the tracks, and a carrier driven by the armature. The electromagnetic launch technology uses a large current to generate an electromagnetic field and force to drive the armature to move at a high speed, while the armature drives the carrier to move together, and finally achieves a high initial velocity. Compared with the traditional gunpowder launch, electromagnetic launch does ...

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Problems solved by technology

[0003] He Yong and others used a low-impedance trigger switch as an active arc suppression device (He Yong, Cheng Cheng, Song Shengyi, et al. Suppression of muzzle arc in electromagnetic rail launch[J]. Strong Laser and Particle Beam, 2016, 28(2) :1-4.), when the armature is close to the muzzle, the switch is quickly turned on. Experiments show that this method effectively reduces the generation of arcs at the muzzle, but the active arc suppression device is too large and requires a high-current switch and high precision Tester and controller, etc., complex system

Tang Bo and others designed a passive arc suppression device (Tang Bo, Xu Yingtao, Li Baoming. Theoretical analysis and optimal design of electromagnetic railgun passive muzzle arc suppression device, Journal of Ballistics, 2016,28(4):62-67 .), has a relatively compact structure, which can reduce the current flowing through the armature when the armature is out of the chamber, but this structure is limited to reducing the muzzle current, and cannot achieve the purpose of silencing and arc absorption

Yang Fan and others proposed a muzzle arc suppression scheme based on a reverse arc suppression power supply (Yang Fan, Chen Liyan, Han Jie. An electromagnetic launch muzzle arc suppression scheme based on reverse arc suppression[J]. Technological innovation and application ,2018,20:9-12.), the arc suppression power supply is connected to the main launch circuit in series, and when the armature is judged to be out of the chamber, the arc suppression power supply is quickly discharged, and the counteracting effect of the reverse arc suppression current and the main circuit driving current is used , to reduce the muzzle arc, but the system is more complicated and the volume is larger

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