Effects of Armature Height and Position on the Performance of Induction Coil Launcher
| Autor: | Jong-Soo Kim, Dae-Hwan Kwak, Chuhyun Cho, Yun Sik Jin, Young Bae Kim |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Nuclear and High Energy Physics Projectile Mechanics Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas law.invention Inductance Induction coil symbols.namesake Height increased law Electromagnetic coil 0103 physical sciences symbols Lorentz force Armature (electrical engineering) |
| Zdroj: | IEEE Transactions on Plasma Science. 45:2696-2700 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2017.2729591 |
| Popis: | Induction coil launcher (ICL) is an electromagnetic accelerator that uses Lorentz force to accelerate a projectile with a conducting armature. In this paper, the effects of the height and starting position of the armature on the performance of the ICL were analyzed. Launching experiments were conducted to verify the analysis results. The speed of the projectile converged to a saturated value as the armature height increased. We found that there exists an optimal starting position of the armature for the highest speed. The concept of inductance gradient was adopted to explain the analysis results. It was possible to predict the acceleration characteristics and to estimate the optimal starting position using this concept. Results show that the armature height should be longer than the drive coil height (H coil ), and the bottom of the armature should be positioned between (1/4)H coil and (1/2)H coil at the start to obtain the highest speed. The experimental results showed good agreement with the simulation analysis results. |
| Databáze: | OpenAIRE |
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