Research On Power Performance Of Micro-rocket Warhead

With urbanization and the evolution of unmanned combat modes,the need for lightweight multi-role weapons and munitions is increasingly urgent.In particular,miniaturized rockets with multiple damage capabilities have become a hot topic in future weapons and munitions research due to their advantages of low cost and efficient attack on diverse targets.However,due to limitations in warhead caliber,aspect ratio,and other structural dimensions,the power performance of miniaturized rockets is insufficient,which is the bottleneck limiting the construction of lightweight weapon systems.It is of great engineering importance to improve the power performance of the miniaturized multi-role warhead in finite-size conditions to meet future practical operational requirements.In this paper,we study the power performance of a 30 mm caliber miniature rocket warhead.Hyper Mesh and LS-Dyna software were used to simulate the penetration of a 30-100 mm caliber multi-functional warhead into a Q235 steel target.The results show that the armor penetration depth and fragmentation velocity show a non-linear decreasing trend with decreasing warhead structure size,and the rate of decrease gradually increases.The structural parameters of the mini-warhead have a more significant impact on its power performance.Then we study the impact of various structural factors of the warhead on the power performance by combining the warhead damage mechanism and fragmentation theory as required by the micro rocket technology index,And determine the variable structural factors of the warhead and the adjustable parameter range.Finally,the control variable method and the orthogonal experimental method are used to study the influence law of the warhead structure parameters on its power performance.The results show that the cone angle and the shell thickness are the most significant factors affecting the armor breaking and killing power of the miniaturized multifunctional warhead.The optimal structure of the multifunctional warhead of 30 mm caliber rocket is: 8701 explosive with a height of 42 mm,copper conical liner with a cone Angle of 85°,wall thickness of 0.6mm and inner arc radius of 4.0 mm,aluminum shell with a thickness of 1.5 mm and tungsten spherical prefabricated fragments with a diameter of 3 mm are used.Twenty-four pieces are placed in each layer,and the 10 layers are staggered.At this time,the warhead had a penetration depth of 88.9 mm,an intensive kill radius of 5.8 m for fragments,and a power performance that met the requirements of technical metrics.The aim of this research is to enhance the power performance of miniaturized multipurpose warheads and to provide a reference for the development of future air-to-ground miniaturized lightweight smart detection systems in urban environments.