Shengguo Xia

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In this paper, the measurement of the in-bore position and velocity of the armature is performed using <i>B</i>-dot probes. Nine <i>B</i>-dot probes are installed in the rail-to-rail insulator at different distances from the breech. Based on some simplifications of the current flowing in the armature, the magnetic flux formula of the probe is derived. It is(More)
The pseudo-liquid (PSL) armature with air-spring is a novel railgun armature, which has lower mass and more compliance than conventional C-shaped armature. The united research group leaded by Beijing Institute of Special Electromechanical Technology (BISET) has completed a lot of experiments of the PSL armatures with air-spring since 2004. The results of(More)
A pulsed power supply of a 1.5-MJ capacitor bank has been developed for high-current high-velocity sliding electrical contact studies in railgun launches. The system consists of 8 small modules, each with a capacitance of 15 mF, and one large module with a capacitance of 54 mF. All of nine modules use triggered spark gaps as the main switches. Various(More)
The feasibility and the performance of the armature with resistivity gradient were studied. The current distribution and its improvement by resistance distribution adjustment in C-shaped armature were analyzed by finite-element method. The calculation was performed with a monolithic armature, in which we defined several layers arranged of two different(More)
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