Research On Individual Tube-shape Weapon Based On Compressed Air Ejection

Individual tube-shape weapon is a kind of tube-shape weapon which can be operated by one or more infantry.Individual tube-shape weapon is generally launched by pyrotechnics at present,which cannot fundamentally achieve "launching in the limited space ".Compared with the use of pyrotechnics,compressed air ejection has the characteristics of good safety,high concealment and good economy,and low noise,no light,no heat and no smoke in the process of launching,and has high adaptability.The application of compressed air ejection technology to individual tube-shape weapon is of great significance for ensuring the survivability of the shooter in the battlefield environment,improving the performance of the weapon and truly solving the problem of "launching in the limited space".Based on a individual tube-shape ejection system of Patrol UAV,the internal ballistic performance of the system is studied by simulation software in fluid-structure interaction,and the matching firing control mode is designed and demonstrated according to the structural characteristics of the ejection system in this paper.The main research work is as follows:(1)The simplified model of individual tube-shape ejection system is established by AUTODYN software.The applicability of the effective energy theory in the software and the feasibility of the compressed air ejection technology in the ejection system are verified by simulation experiments.Through the simulation experiments of internal ballistic of ejection system under different discharge diameter and length,the influence on the interior ballistic performance of ejection system is studied,and the discharge diameter of ejection system is determined.(2)Combining with the structural characteristics of the ejection system,the control mode of the electromagnetic launching valve cooperating with the piston is proposed.The electromagnetic launching valve is designed in detail.The simplified model of the ejection system is established by AUTODYN software.The internal ballistic data and the piston response data of the ejection system under the pistonresponse conditions are obtained by simulation.(3)According to the piston response data of the ejection system at the time of firing,the piston model is established by AUTODYN software,and the motion curve and stress distribution cloud diagram of the collision process are obtained by simulation.On the basis of the above research and according to the data of the design and demonstration process,the firing test of the prototype of the ejection system is carried out to verify the launch performance of the system.The principle and technical feasibility of individual tube-shape weapon are discussed.The interior ballistic simulation and piston collision simulation in this paper are carried out in AUTODYN.The fluid-structure interaction interior ballistic simulation of ejection system using this software can provide a perfect platform for system-level modeling,dynamic simulation and performance optimization of this kind of compressed air ejection system.It is helpful to the application of compressed air ejection technology in individual tube-shape weapon.