一维弹道修正引信DCM启动时间快速计算方法研究

A New Method to Calculate Fast Deployment Time of DCM of One-Dimensional Range-correction Fuzes

根据一维射程修正技术与迫弹特性,分析了弹丸在配备阻尼修正机构前后的阻力系数变化规律,提出一种一维弹道修正引信DCM启动时间快速计算方法,即利用射程修正量与阻尼片作用时间的关系,粗略估算出阻尼片的张开时间,然后重新计算弹道,根据计算出的目标射程与预测弹道落点射程的差值的正负来精确算出阻尼片的张开时间。仿真结果验证了该方法的可行性和正确性。

On the basis of the one-dimensional range-correction technique and the characters of a mortar bomb, analyzing the variational law of the drag coefficient of projectiles with the DCM (drag correction mechanism) and without DCM, this paper gives out a new method to calculate fast the deployment time of the DCM of one-dimensional range-correction fuzes, namely, according to the relation of the quantity of needed correction of real range and the working time of CDCM, approximately estimating the deployment time of DCM, and then computing the trajectory again, finally, precisely calculating the deployment time of DCM according to the sign of the difference between the target range and the calculated range. The simulation result proves the coffectness and feasibility of the method.