电子时间引信后坐开关闭合阈值的选择方法

摘要

针对发射前供能，并利用后坐开关闭合启动计时的电子时间引信计时起点精度差的问题提出了提高电子时间引信计时精度的后坐开关闭合阈值选择方法。该方法得出在合理的阈值选择范围内，开关闭合阈值应选的越大越好，以保证弹丸膛内运动时间较高的补偿精度，提高电子时间引信计时精度。以85 mm 坦克炮弹为例，仿真验证表明，高低温对弹丸膛内运动时间的影响最显著，其他影响因素相对较小，当选取10000 g作为该弹药的开关闭合阈值设计目标值时，在补偿时间固定后，散布较小。%A selection method of the recoil switch closure threshold of the electronic time fuze was proposed in order to improve the accuracy of starting time.The timing circuit was activated when the recoil switch closed. Within a reasonable value of a threshold,switch closure threshold should be selected as large as possible to en-sure that the high precision of compensation time of projectile in bore was achieved.Taking 85 mm tank shell as example,the simulation result showed that the charge temperature was the main influence to the moving time of projectile in bore.When 10 000 g was selected as the switch closure threshold and the compensation time was fixed,the dispersion would be smaller and timing accuracy was higher.