Research On Low Recoil Technology Of Electromagnetic Railgun

The electromagnetic rail gun is a new pattern of kinetic-energy weapon based on electromagnetic emission technology;it is a significant breakthrough of launch technology in the new era.At present,the world’s military powerful nations have invested plenty of time and vigor in the research of electromagnetic railguns and have achieved substantial research results in many aspects.Similar to traditional weapons,electromagnetic railgun also has recoil phenomenon.The recoil force generated in the launch process often has a large impact on the electromagnetic railgun’s entire performance.This paper will focus on the low recoil technology of electromagnetic railgun recoil mechanics’ research.This paper firstly introduces and analyzes the electromagnetics launch principle of the railgun,and carried out the theoretical analysis and models the stress condition of the railgun body during the launching process.The results show that the electromagnetic railgun has a large load during launching.In order to avoid excessive load causing a series of problems,e.g.: the launch platform structure intensity deterioration or electromagnetic railgun accuracy down.This paper theoretical analysis the recoil principle of electromagnetic railgun,and building up the railgun finite element model.Through the data of internal trajectory and the analysis of simulation to generate the electromagnetic railgun recoil curve,can calculate that the peak recoil force is about 2804 KN.According to the simulation results of recoil force,carried out the scheme demonstration and selection of the buffer of electromagnetic railgun,and the spring hydraulic buffer was finally used by contrast.Established the three-dimensional model of the used spring hydraulic buffer,and the mechanical model of the whole railgun based on the designed buffer.The movement characteristics of the recoil body under different buffer parameters were calculated by programming,and the more appropriate structural parameter combination of the buffer was finally used.In order to verify the performance of the buffer device,the corresponding dynamics simulation was carried out at different launch angles to verify the characteristics of the spring hydraulic buffer.The simulation results show that when the launch angles is 0°,the buffer performance is optimum,and the recoil peak value of the electromagnetic railgun system acted by the buffer is about 188 KN,which is only 6.7% of the recoil peak value of the electromagnetic railgun system without recoil device.The effect of recoil device is obvious.This paper provides reference for the design of spring hydraulic buffer and lays a certain foundation for the research of low recoil technology of electromagnetic railgun.