为了确定点火具点火时间的精度要求,并进一步选择点火具定时技术原理,应用火箭增程弹质点外弹道学理论,解算了火箭增程弹外弹道质心运动微分方程组,得到了射程随火箭增程发动机点火时间和射角变化的规律。火箭增程弹点火具点火时间精度越高,弹丸射程散布就越小,近似呈线性关系。以155mm口径加榴炮底排火箭复合增程弹为例,点火具点火时间精度在±1s以下时有可能满足弹丸最大射程精度要求;而在±1s以上时,难以满足弹丸最大射程精度要求。点火具宜优先采用电子定时技术原理。

In order to determine ignition time accuracy of igniter and select timing technology principle of igniter, the particle exterior ballistics theory of extended-range rocket projectile was applied to solve the group centroid differential equations of exterior ballistics of extended-range rocket projectile, the variation regularity of extended-range rocket engine ignition time and angle for range was obtained. The higher precision of extended-range rocket projectile ignition time is, the smaller dispersion of projectiles range is, approximately taking on linear relationship The hybrid base-bleed-rocket extended-range projectile for 155 mm caliber howitzer was used as an example, when the ignition time precision of igniter at ± 1 s or less, the precision of projectile maximum range may meet; while at ± 1 s or more, it is difficult to meet the maximum projectile range precision. An electronic timing technology of igniter should be prior used.