末敏弹伞系统弹道模拟试验数据的处理

PARAMETERS ESTIMATION AND TRAJECTORY CALCULATION OF PARACHUTE/SUBMUNITION SYSTEM FROM THE DATA OF FREE FLIGHT TEST

针对末敏弹伞系统减速稳定段弹道模型试验的特点，以弹伞系统四自由度弹道方程为基础，结合旋转伞的阻力模型进行弹道分析．应用Ｃｈａｐｍａｎ－Ｋｉｒｋ方法直接将弹道方程的数值解拟合试验数据．拟合结果表明，文中采用的拟合方法计算精度高，计算结果与试验结果的一致性好．应用该结果，较好地预测了末敏弹伞系统在相应弹道段的飞行情况，为末敏弹设计提供必要的技术参数．

For the determination of the velocity and roll characteristics of sensor fuzed submunition/parachute system in the period of its decelerated and stabilized trajectory. Both the 4 degree of freedom nonlinearity differential equation of motion for a rotating parachute/submunction system and ChapmanKirk method were applied to analyze the data of the free flight test, and some parameters were estimated. The computed results show that the computed data of the equations correspond well with the one of the test. The estimated parameters were applied to calculate the trajectory of sensor fuzed submunition/parachute system. Its velocity and spin curves were obtained. Form the curves, some technique parameters can be applied to the design of sensor fuzed munition.