Effects of Wind on Steady-state Scan Characteristics and Hit Probability of Terminal-sensitive Projectile

The wind effects on steady-state scan characteristics and hit probability of terminal-sensitive projectile were discussed in this paper. Considering wind as the constitutions of the average wind and the impulsive wind, a simplified wind field model was established for the ballistic calculation of the steady-state scan phase; under the windy condition, the effects of the range wind and the beam wind on the steady-state scan characteristics of the terminal-sensitive projectile were analyzed in detail and its hit probabilities for a certain armored target were calculated. The calculated results show that, when the wind speed exceeds a certain value, the hit probabilities of terminal-sensitive projectile drop rapidly; the wind effects must be considered in the application of the terminal-sensitive projectiles. This paper provides some theoretical references for the fire wind speed correction and the global structure optimization of the terminal-sensitive projectile.

单翼末敏弹扫描运动研究

稳态扫描技术是末敏弹系统研制过程中的关键技术之一。本文在分析末敏弹现有稳态扫描技术优缺点的基础上提出了一种新的技术 ,即用端部配重的单侧翼 ,也即用人为的子弹质量和空气动力的强非对称实现稳态扫描。分析了此种末敏弹系统的受力情况 ,建立了系统的二体运动模型 ,并详细讨论了此模型中约束力及约束力矩的消元化简方法 ,推导出了适于上机编程的标准形式的方程组 ,并用其编制了诸元计算程序。程序算例表明这种结构可以实现稳态扫描并用作稳态扫描装置 。

基于目标双参数的末敏弹扫描角自适应调整

针对末敏弹稳态扫描参数恒定,扫描规律一定,对不同参数目标,可能导致漏扫甚至无法及时发现目标的问题,提出了一种基于目标速度与长度的扫描角自适应调整方法。建立了末敏子弹扫描目标的关系模型,通过MATLAB进行了初始扫描角以及稳态扫描扫描角的确定。仿真结果表明:文中提出的扫描自适应调整方法,能快速调整扫描角,提高了扫描效率,便于及时发现目标,对末敏弹设计提供了一定的理论支持和数据参考。

末敏弹二体运动模型计算中伞绳张力的求解

推导了末敏弹二体运动模型计算中伞绳张力的表达式。先建立伞体和弹体各自的质心运动方程组，再由伞弹连接点是伞弹共同点这一约束出发，建立联系方程，最后求出伞绳张力，并将它代入未敏弹系统完整的运动方程组，联立求解。计算结果与试验实测结果有很好的一致性。

基于扫描角控制的末敏弹稳态扫描方法

针对末敏子母弹在稳态扫描过程中因扫描效率低、无法及时发现目标导致攻击失败的问题,提出了控制扫描角的末敏弹稳态扫描方法。首先构建了末敏弹在扫描阶段的模型,分析了扫描轨迹及传统扫描方式的缺点;然后提出了控制扫描角的搜索算法,详细阐述了该方法的原理,并对其进行了细致讨论;最后基于建立的子母弹毁伤效能评估模型及仿真平台验证了该方法能有效提高子母弹的作战效能。