Analysis of influencing factors on outlet velocity of multi-stage synchronous induction coil gun

Tang Jing; Ding Chenghan; Hao Guanyu; Lin Fuchang; Zhang Qin

doi:10.11884/HPLPB202638.250337

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2026 > Accepted Manuscript

Tang Jing, Ding Chenghan, Hao Guanyu, et al. Analysis of influencing factors on outlet velocity of multi-stage synchronous induction coil gun[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250337

Citation:

Tang Jing, Ding Chenghan, Hao Guanyu, et al. Analysis of influencing factors on outlet velocity of multi-stage synchronous induction coil gun[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250337

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Analysis of influencing factors on outlet velocity of multi-stage synchronous induction coil gun

doi: 10.11884/HPLPB202638.250337

Tang Jing^{2, 3
,},
Ding Chenghan^{2, 3},
Hao Guanyu^{2, 3
,
,},
Lin Fuchang^{1, 2, 3},
Zhang Qin^{1, 2, 3}

1.
State Key Laboratory of Advanced Electromagnetic Technology, Huazhong University of Science and Technology, Wuhan 430074, China
2.
School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3.
Key Laboratory of Pulsed Power Technology (HUST), Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 2025-10-11
Accepted Date: 2025-12-16
Rev Recd Date: 2025-12-25

Available Online: 2026-01-10

Abstract

Abstract

Background
As an important branch of electromagnetic launch, multi-stage synchronous induction coil gun has become one of the hotspots of launch research because of its non-contact, linear propulsion and high efficiency. Among them, the armature outlet velocity is an important index, which is affected by many factors such as the structural parameters, material parameters and coil circuit parameters. However, the existing research lacks theoretical analysis on various factors.
Purpose
The purpose of this paper is to analyze theoretical approaches for improving the armature outlet velocity, and to explore the factors affecting it.
Methods
Based on the equivalent circuit model, this paper derives the analytical formula of armature induced eddy current., and investigates these factors affecting the outlet velocity via finite element simulation.
Results
Theoretical analysis shows that reducing the total inductance of the coil-armature equivalent circuit can increase the armature outlet velocity. Simulation results show that under the same initial electric energy, reducing the number of turns of coils, reducing the cross-sectional shape factor of rectangular wire, increasing the thickness and length of armature, and reducing the line inductance can improve the armature outlet velocity. Considering various factors, the simulated outlet velocity of 32 kg armature driven by 5-stage coil can reach 202.1 m/s, and the launch efficiency is 33.3%. The influence of various factors on the armature is in line with the theoretical analysis results.
Conclusions
The research content of this paper provides some theoretical support for the design of multi-stage synchronous induction coil gun scheme.
- induction coil gun,
- outlet velocity,
- armature eddy current,
- equivalent circuit,
- finite element simulation

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References(15)

References

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