Research On The New Electromagnetic Launch Technology

Electromagnetic launch technology (EML) has taken launch science and technology into a new era. EML has a lot of unique advantages, such as faster launch velocity, more efficiency, better performance, easier control, more various structures and so on. Therefore, it is significant and prospective that electromagnetic launch technology is applied on military and civil fields in the future. In this paper, the theory of the EML technology is analyzed. Compute simulation and experiment research are also realized.Firstly, the principles of three basic types of EML launchers are introduced. Based on the characteristics of them, the coil launcher is eventually selected. Then, we analyze two types of coil launcher, one is the induction launcher, the other is reluctance launcher and the design rules of these two type launcher structures are given. Because the results of theory are not precise, it is helpful to use the method of finite element analysis. The finite element simulation shows that the rules of the structure designs are reasonable and the parameters of the launchers are optimized. Next, we design a new type launcher by combining the characteristic of two types of coil launchers. The result of simulation shows that the new launcher is not only a reluctance accelerator, but also a induction accelerator. The new launcher has good performance and great practical worth. Finally, based on the results of theory and simulation, a model of reluctance coil launcher is realized. It is proved that the new launcher overcomes the shortcomings of the traditional coil launcher whose discharge time is difficult to control and structure is complex. The excellent performance of the launcher is proved by the experiment data. These works are useful for future EML research.