末敏弹旋转伞──弹系统阻力模型研究

A DRAG MODEL FOR PARACHUTE-PROJECTILE SYSTEMS OF SENSOR-FUZED MUNITIONS

采用本敏弹伞一弹系统4自由度质点弹道模型，深入分析了该系统在稳态和非稳态两种条件下运动规律的差异及形成的原因。针对本敏弹旋转扫描伞一弹系统的运动特点，提出了一般条件下计算旋转扫描伞阻力系数的经验公式。实例计算表明，用该阻力模型进行弹道计算得出的结果与系统稳态和非稳态运动条件下试验结果完全一致，该阻力模型具有较好的实用价值。

By use of a four-degree-of-freedom particle ballistic model, differences on the motion characteristics between the stable and unstable conditions are extensively analysed and the cause leading to such differences presented. Empirical formula for calculating the drag coefficient of rotational scanning parachutes under general condi-tions is given, based on the kinetic characteristics of the parachute-projectile systems in sensor-fuzed munitions. Computer sdriulation results makdrig use of this drag model showed good agreement with actual test results under stable and unstable motion conditions. The drag model is thus seen to be of much practical value.