Method for creating and actually measuring axial temperature gradient distribution of electromagnetic gun track

Abstract

The invention relates to a method for creating and actually measuring axial temperature gradient distribution of an electromagnetic gun track, and belongs to the technical field of electromagnetic rail guns. According to the method, an electromagnetic track is divided into a high-temperature section, a medium-temperature section and a low-temperature section on the basis of analytical calculation and public literature data, and under the condition of no actual missile launching, the electromagnetic track is heated through three sets of unequal-distance and power-adjustable heating pipes to create track temperature distribution after electromagnetic railgun launching. Temperature measuring points are arranged on the electromagnetic track and extend from the outer side of the rack to the position 1-2 mm away from the contact side of a pivot rail, a thermocouple is connected with a data acquisition instrument to obtain the real-time temperature of the temperature measuring points, and experimenters can conveniently adjust the number of the heating pipes and the heating power to achieve temperature distribution of the electromagnetic rail under various working conditions; the problem that the thermal management experiment research of the electromagnetic rail gun is difficult to carry out due to the fact that actual launching of the electromagnetic rail gun is complex is innovatively solved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic railguns, in particular to a method for creating and measuring the axial temperature gradient distribution of an electromagnetic railgun rail. Background technique [0002] Electromagnetic rail gun is an advanced kinetic energy killing weapon made by electromagnetic launch technology. Its launch principle is to form a discharge circuit through electromagnetic rails and conductive armatures. High-power pulse power supply is used to generate pulsed strong current, and strong current generates strong magnetic field. The armature carrying the projectile is pushed by the Lorentz force under the action of a strong magnetic field, so as to obtain a high firing speed. During the launching process of the electromagnetic railgun, because the armature and the launch rail are in high-speed sliding electrical contact, the instantaneous current is transmitted to the armature through the guide rail at hi...

AI Technical Summary

Problems solved by technology

During the launching process of the electromagnetic rail gun, because the armature and the launch rail are in high-speed sliding electrical contact, the instantaneous current is transmitted to the armature through the guide rail at high speed, causing a large amount of heat to be generated on the guide rail instantly, which is likely to cause thermal stress damage to the rail of the electromagnetic launch system

In the continuous launch mode, the electromagnetic railgun is expected to launch 6 to 12 rounds of projectiles per minute. The rapid accumulation of heat will not only affect the launch efficiency, but may also cause damage to the orbital performance, causing problems such as shortened life of the electromagnetic launch system or even launch failure.

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