A Calculation method of deposition layer based on armature melting morphology

The key assumption of this article is that the liquid metal generated by armature melting will rapidly deposit on the rail surface [1]. Combining the calculation method for armature melting morphology [2], this paper introduces a calculation method for determining the distribution of the deposition layer on the rail surface. The evolution law of the deposition layer distribution on the rail surface was obtained by 49 launch experiments. Additionally, the distribution of the deposition layer was calculated based on the launch conditions. Compared with experiments results about the deposition layer from perspectives of distribution trend and thickness, the calculation results was verified. Analysis of deposition layers in the launch direction and vertical direction relative to the insulator during multiple launches reveals that areas with thicker deposition layers carry more current, leading the armature to melt more easily under the influence of Joule heating. Consequently, during multiple launches, the concentration of the deposition layer tends to increase, leading to a thicker layer overall. This ultimately results in significant alterations to the shape of the inner chamber.