Simulation of aerothermodynamics model on ballistic safety of fusible alloy fuze  

易熔合金引信弹道安全的气动热力学建模仿真（英文）

作　　者：MA Hui-ming ZHANG Ya LI Shi-zhong 马慧明;张亚;李世中(中北大学机电工程学院,山西太原030051;中北大学信息与通信工程学院,山西太原030051)

机构地区：[1]School of Mechatronic Engineering,North University of China,Taiyuan 030051 , China [2]School of Information and Communication Engineering, North University of China , Taiyuan 030051,China

出　　处：《Journal of Measurement Science and Instrumentation》2016年第4期324-331,共8页测试科学与仪器（英文版）

摘　　要：In order to ensure the ballistic safety of fusible alloy fuze at reliable delay arming, melting point of fusible alloy needs to be calculated based on projectile velocity at safe time and distance. Taking shrapnel KZVD fuze of Switzerland oerlikon 2ZLa/353 35 mm double barrel self-propelled antiaircraft artillery as an example, based on the aerodynamics heating theory, the calculation of theory model and simulation of projectile head stagnation point temperature were done in initial stage of sim-plified exterior ballistic from engineering viewpoint when the initial projectile velocity was 1 175 m/s and the error was ±15 m/s. The melting point of fusible alloy in the safe distance was obtained by analyzing the temperature of projectile head stagnation point at corresponding projectile velocity. The simulated results indicate that the melting point of fusible alloy de-rived by theoretical calculation is identical with the result of simulation at the velocity range of 1 160 to 1 190 m/s. So the aero- thermodynamics model can be applied to design the fusible alloy fuze of corresponding melting point based on the requirement of safe distance. This method can be taken as the reference in studying the thermodynamic question of projectile flying at high speed.

关 键 词：fusible alloy fuze ballistic safety projectile head temperature aerothermodynamics 

分 类 号：TJ430[兵器科学与技术—火炮、自动武器与弹药工程]