高g值引信测试弹射切入机构研究

Research on Ejection Cut-in Mechanism for High-g Fuze Testing

分析引信测试的基本方法,针对一种新的高g值引信测试装备的关键部件-弹射切入机构进行了深入研究.根据弹性势能公式、能量守恒原理与简谐振动方程,推导出弹射弹簧相对质量,弹簧刚度与弹射周期的计算式.利用概率统计原理对实验弹射速度误差与弹射机械系统时间分布函数进行了分析,预测了系统时间误差.实验结果表明切入机构性能达到设计指标要求.本方法对实现高g值引信测试,提高引信测试技术水平具有实际意义.

Basic technique of fuze testing is analyzed. As the key component of the new high-g fuze test equipment, ejection cut-in mechanism is studied deeply. According to the elastic potential energy formula, the principle of conservation of energy and the simple harmonic vibration equation, computation formulas of the ejection spring relative mass, the spring rigidity and the ejection cycle are derived. The experimental error of ejection speed and the distribution function of ejection mechanical system test time are analyzed by applying the principle of probability and statistics. The prediction of system test time error is presented. The experimental results show that the performances of the ejection cut-in mechanism can satisfy the requirements of design index. These methods have practical significance for the realization of high-g fuze testing and the improvement of the level of fuze test technology.