弹体条件和弹射条件对无安定器航弹射程的影响

Influence of Bomb-body and Bomb Ejection on the Range of Finless-aerial-bomb

为说明弹体条件和弹射条件对投弹精度的影响特点,依据理想条件下的无安定器航弹弹道模型,采用计算机仿真方法,量化了无安定器航弹初始俯仰角速度与航弹射程的关系;根据无安定器航弹的弹体特征和投放系统结构特点,建立了弹体条件和弹射条件与航弹初始俯仰角速度的基本关系式,定量分析了弹射冲量、质心位置对无安定器航弹射程的影响.仿真结果表明,弹射冲量变化通过引起初始俯仰角速度的差异将导致射程的较大改变;质心位置的变化对航弹的射程也有较大影响.研究结果对科学制定飞机挂弹系统的设计指标、提高航弹投弹精度有重要参考价值.

In order to confirm influences of parameters of bomb-body and bomb ejection on bomb-dropping accuracy, based on the ideal ballistic model of finless-aerial-bomb, the relationship between initial angular velocity of pitch of finless-aerial-bomb and aerial-bomb range was quantified by computer simulation. According to body feature of aerial bomb and structural feature of ejecting system, formulas of bomb-body and bomb-ejection to initial angular velocity of pitch were given. Ejection momentum and centroidal position influencing on finless-aerial-bomb range were analyzed quantitatively. Simulation results show that ejection momentum, through changing initial angular velocity of pitch, will lead to range change markedly. The change of centroidal position has great influences on the aerial-bomb range. The conclusions are important for determining the design index of ejection system and improving the accuracy of bomb-dropping.