Analysis On The Protection Performance Of A Rocket Launcher With A New Type Of Diverter

Active defense system plays a vital role in the protection process of armored vehicles and is the last protective barrier of armored vehicles in modern battlefields.With the development of multi-barrel weapons such as rocket launchers,multi-barrel interception devices came into being.In this research,based on the gas jet dynamics theory,aiming at the high temperature,high pressure,high speed gas jet generated by the interceptor using the thermal launch method during launch,and the backward collision due to the impact of the gas jet,the safety threat caused by the igniter to the laser suppression sighting system,infrared optical detection device and other precision instruments on armored vehicles,this type of multi-tube launch device was employed to designs a new type of rocket launcher tail jet diverter that supports ignition is designed and numerical analysis is carried out.In this study,the applicable scenarios and design requirements of the shunt were introduced,and three design schemes with different structures were proposed and numerically calculated one by one.Using computational fluid dynamics method,numerical simulation calculation is carried out on the new rocket tail jet diverter with different structural designs,and the flow field characteristics of the gas jet under the action of the diverter and the force of each part are compared and analyzed.Finally,the best solution is selected for subsequent optimization.On the basis of the optimal shunt structure,the side wall angle of the igniter and the "skirt" position of the side wall are optimized.Futhermore,on this basis,the combination of the ignition device and the shunt structure with the smallest recoil force is selected,and a reasonable design scheme of the tail jet shunt and the ignition device is obtained.In order to solve the problem of recoil caused by the structure of the diverter,a disc spring buffer structure was added to the intercepting device and its dynamics were analyzed,which based on the principle of anti-recoil of the artillery.and the influence of the key parameters of the spring buffer device on the intercepting device was studied.In addition,study the influence of the key parameters of the spring buffer device on the interception devicea.A reasonable solution was finally obtained.Through the above design and analysis,the tail jet diverter meets the design requirements,which provides a new solution to the security threat to armored vehicles and personnel when the multi-tube interceptor is launched,and provides a new solution for the position of the multi-tube interceptor on the armored vehicle.Selection adds more possibilities.