The Study On The Influence Of Jet Flow On Open-field Ground Of Vehicle-mounted Vertical Thermal Launched Missile

Vehicle-mounted missile is widely used because of its excellent maneuverability,maneuverability and concealment,Vertically Thermal Launch is also the key launch mode,due to its simple launch device,short reaction time,high reliability and versatility.Although the Vehicle-mounted vertical thermal launch has many advantages,the hightemperature high-speed jet flow has a strong ablation and impact,if not handled properly,it will destroy the launch device,or even be a threat to the missile,resulting in emission failure,The study of gas flow field is of great significance.At present,deflector,as an important part of Vehicle-mounted Vertically Thermal Launched system,is the main way to bear the impact of jet flow and guide it to the direction that is favorable to launch.the diversion effect is quite different lies on different type of deflector.Based on a certain type of Vehicle-mounted missile,In this paper,through the simulation of CFD software,the effects of the single-faced and two-faced diversion schemes on the open ground and launching vehicles are compared and analyzed,and the diversion characteristics of the two schemes are obtained,which can provide a reference for the selection of the diversion schemes.Secondly,based on the double-faced diversion scheme,dynamic simulation of the influence of open-field ground during the course of missile motion is carried out by using dynamic mesh technology.The DPM model is used to simply simulate the motion law of little sand on the ground,and analyze the influence of the particles on the launcher and missile.The result can provide a reference for the design and protection of the launcher.