Investigation of Gyroscopic Stabilization for Single-Stage Saddle Sextupole Field Electromagnetic Launcher

Fan, Guangcheng; Wang, Yu; Nie, Xinyi; Hu, Yanwen; Chen, Weirong; Yan, Zhongming

doi:10.1109/tps.2017.2709330

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…Multipole field electromagnetic launcher (MFEL) is a type of induction launcher, which was first proposed and designed by Zhu et al [8]. Compared with traditional coilguns, the ratio of the radial compressing force to the axial propulsion force in MFEL is better [9], [10]. In recent years, several researches…”

Section: Introductionmentioning

confidence: 99%

“…However, the twisty modes mentioned above take a lot of space because the twisting magnetic field must be generated by multiple stages, so the configuration is complicated and the rotational efficiency is limited. Fan et al [10] proposed a model of single-stage saddle sextupole field electromagnetic launcher (SSFEL), analyzed the model by simulations and verified by the experiments. This mode can realize a better rotational performance using only one stage, which saves space, but the armature must be slotted and the performance of the launcher depends on the initial twisted angle, which affects the integrity of the armature, complicates the fabrication, limits the flexibility of control and increases the difficulty to adapt for multi-stage application.…”

Section: Introductionmentioning

confidence: 99%

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Design and Test of a Single-Stage Double-Layer Multipole Field Electromagnetic Launcher With a Rotational Performance

Deng

Fan

et al. 2019

IEEE Access

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A new type of multipole field electromagnetic launcher is designed in this paper, which has two parallel layers of multipole structure, and there is a 30-degree relative torsion angle between the inner and the outer one. The armature is designed as a complete and symmetrical hollow cylindrical metal sleeve with no slots. Owing to the superposition of the magnetic fields generated by the two layers, this novel structure can make the magnetic field density and eddy current distribution on the armature unbalanced, which generates an axial force and torque simultaneously. Simulations were conducted, and the magnetic field and the eddy current distribution were analyzed. The simulations indicate that this double-layer multipole field electromagnetic launcher achieves a rotational motion and a higher linear speed than that of single-layer structure. Experiments were performed and the results verified the correctness of the simulations. Due to its rotational performance, this configuration provides an approach to obtain gyroscopic stabilization for projectiles. It creates condition for multi-stage and combined mode applications because the armature does not need to be processed particularly to meet special requirements. INDEX TERMS Double-layer multipole field electromagnetic launcher, eddy current distribution, magnetic force and torque, rotational motion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%