弹体高过载硬回收测量技术的实验探讨

Experimental study on measurement technology for projectile deceleration

为提供引信服役的力学参数,达到引战配合目的,弹体过载（减速度）的测量十分必要.采用硬回收法测量了高速侵彻混凝土的先进钻地弹缩比弹过载时间历程.实验弹最大直径48 mm,计及过载测量装置,弹体质量约1.8kg,撞击速度1 142 m/s.过载测试系统模块化和集成化设计,包括过载测量模块、电路模块、信号存储模块、电源模块和外部计算机模块,传感器为压阻式.量程在（-8～21）×10 4g,可测量过载幅值约20×104g.

To provide the reliable mechanical parameters of the fuses during penetration,it is necessary to study the deceleration of the projectiles.The penetration test was carried out for a reduced-scale advanced earth penetration warhead （EPW） into concrete.The deceleration-time curve of the projectile was obtained by a hard recovery technique.The testing system for deceleration is highly modularized,including a testing module,a circuit module,a memory module,a power-supply module and a periphery computer module for data processing.In the testing module,the piezoresistive accelerometer is fabricated by the MEMS technique and it works in a Wheatstone bridge.The projectile mass is about 1.8 kg,including the deceleration testing equipment loaded in it.The maximum diameter of the projectiles is 48 mm,and the striking velocity is 1142 m/s.The deceleration magnitude obtained by the experiment is approximately 20 × 104 g.