Abstract: To improve the concentration of projectiles, the range is corrected by drag brake for one dimensional trajectory correction projectile. The firing collimation angle is calculated with the firing distance and the extended range, and it is very important to select the optimal extended range so as to improve the concentration of projectiles. The model of calculating the extended range is set up. The viewpoint is brought forward that the extended range should be amended with the modulus when the reliability declines, and the model is simulated with the Monte-Carlo method, and the rule is founded between the maximum average shell hits and the three factors, the target depth, the reliability, and the correction modulus. The production is reference to calculate the firing collimation angle for one dimensional trajectory correction projectile.

Key words: trajectory correction, extended range, reliability

摘要： 为提高炮弹密集度，一维弹道修正弹采用增阻方式对射程进行修正，在射击距离的基础上增加射程扩展量确定瞄准射程，计算射击诸元，确定最佳射程扩展量对提高密集度具有重要意义。建立了射程扩展量计算模型，提出了当可靠性较低时对射程扩展量进行系数修正的观点，进行了仿真计算，得出了最多平均命中弹数与目标纵深、可靠度和修正系数的关系。研究成果可以为一维弹道修正弹射击诸元的计算提供参考。

关键词: 弹道修正, 射程扩展量, 可靠性