内装式运载火箭空中发射过程的安全性分析

Study on Safety of Carrier Aircraft during Launch Vehicle Separation from Aircraft

载机和火箭的安全性是完成内装式空中发射任务的基础和根本保障。针对内装式空中发射过程,基于线化小扰动方程和时域法,研究火箭在舱内移动过程对载机稳定性、飞行品质和安全性的影响规律,提出了改善飞行品质的解决方案;利用火箭运动学方程模拟载机的俯仰角和火箭的安放位置对火箭头部与货舱顶部碰撞的影响规律;通过爆炸相似律理论分析火箭爆炸后对载机和飞行员安全的影响程度,确定不受爆炸冲击波影响的安全距离;最后进行了定性和定量的安全性分析。

The safety of carrier aircraft and rocket is the foundation of inner air launch system. Linear theo- ries with small disturbance and time-domain method are applied to study the stability,flying quality and safety during separation in cabin, and some ways are brought forward to improve flying quality. It is con- sidered that rocket is likely to hit aircraft and the effect of carrier aircraft＇s pitch angle and rocket＇s location are simulated by using the kinematics equation of rocket. Through explosion comparability theory, the in- fluence of rocket explosion wave on aircraft and pilot is taken into account and safe distance is obtained. The results of qualitative and quantitative analyses provide a theoretical basis for the application of inner air launch system.