双弹头牵连体再入动稳定性分析

双弹头牵连体再入过程的动稳定性分析是有关工程设计中的重要环节。依据六自由度弹道方程 ,建立了双弹头牵连体再入的动力学模型 ,利用弹道与气动力的耦合 ,初步分析了双弹头牵连体再入的动稳定特性。计算结果表明 ,绳索牵连减弱了弹头再入的动稳定性 ,由动稳定弹头组成的双弹头牵连体在某些条件下可能出现打转、横飞等动不稳定现象。

Dynamic stability analysis of the connected double-warhead reentry

Based on the ballistic equation of six freedom of degrees, the dynamic model of the connected double warhead reentry is built. Coupling the ballistic trajectory and the air force, the dynamic stability of the connected double warhead reentry is analyzed. The results show that the dynamic stability of the double warhead reentry is weaken because of the connected flexible cord, and that under some conditions the double warhead comprised by warhead which is dynamic stability will appear phenomena of motive instability such as rotating and cross flying. So, the dynamic stability analysis of the connected double warhead reentry is an important step in the engineering design.