Modeling method of electromagnetic rail launcher

Abstract

The invention relates to a modeling method of an electromagnetic rail launcher. The modeling method of the electromagnetic rail launcher simultaneously achieves matching of physical fields and armature speeds of a prototype and a model. According to the method, all the physical quantity similarity constants need to meet the conditions including that the geometric similarity constant is k; (2) the electromagnetism-related similarity constants include that the current density similarity constant is 1 / k and meanwhile the conductivity similarity constant is 1 / k without change of magnetic conductivity; (3) the heat-related similarity constants include that the thermal conductivity similarity constant is k, the unit volume heat capacity similarity constant is 1; the time and kinematics-related similarity constants include that the time similarity constant is k, the density and speed similarity constant is 1. The modeling method of the electromagnetic rail launcher achieves matching with kinematical equation analysis results and similarity of electric fields, and meanwhile, achieves matching of the physical fields of the armature speeds simultaneously, effectively simulates speed-associated physical phenomena, requires simple materials, is easy to implement and can guarantee similarity of temperature fields of a model launcher and a prototype launcher.

Description

technical field [0001] The invention relates to the technical field of electromagnetic launch, in particular to a modeling method of an electromagnetic track launcher. Background technique [0002] The main part of the electromagnetic rail launcher consists of two parallel rails and an armature that is in good contact with the rails and can slide freely along the rails. When power is applied to the rear ends of the two rails, the two rails and the armature conduct the drive current as part of the circuit. The armature is accelerated along the track by the ampere force, so as to obtain high speed. [0003] In recent years, electromagnetic orbital launch technology has developed the fastest in the field of electromagnetic launch technology. Because of its wide application prospects and important military significance, it has attracted widespread attention from various military powers. At present, it is generally in the stage of researching key technologies such as launch tec...

AI Technical Summary

Problems solved by technology

Due to the above reasons, the above-mentioned electromagnetic rail launcher modeling method has not received enough attention and application

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