运载器级间冷分离使用直接力姿控方法研究  

Research on launch vehicle attitude control using direct force during stage-separation

作　　者：孙平[1] 刘昆[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2009年第4期365-368,共4页Journal of Solid Rocket Technology

摘　　要：侧向喷流直接力控制技术已在大气层外动能拦截器和大气层内防空导弹中得到成功应用。运载火箭作为跨大气层飞行器,可尝试采用该技术进行姿态、轨道控制。介绍了一种由侧向喷流发动机作为姿态控制执行机构的运载器,讨论了该运载器在级间冷分离过程中进行姿态控制的可能性,建立了运载器在大气层外飞行条件下的分离姿态动力学模型,并设计了滑模变结构姿态控制规律。仿真结果表明,所设计的级间分离姿态控制方法能降低上面级的初始姿态误差。The direct lateral force technology has been used in ex-atmosphere kinetic-kill vehicle and in the inner-atmosphere air-defense missile successfully. It is possible to control the launch vehicle with direct lateral force since the trajectory steps across the atmosphere, A launch vehicle with lateral jet engine as its attitude control mechanism was presented, The possibility for the vehicle to adopt attitude control during stage-separation was discussed. The separation dynamic equations of the vehicle above the atmospheric layer were established and the sliding mode attitude control law was designed, Simulation results verify the validity of the attitude control law, and the results show that it can reduce the initial attitude errors.

关 键 词：姿态控制 级间分离 侧喷流 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]