重复使用运载器末端区域能量管理轨迹鲁棒性分析  

Robustness Analysis of Terminal Area Energy Management Trajectory for Reusable Launch Vehicle

作　　者：孙春贞[1] 黄一敏[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016

出　　处：《兵工学报》2008年第3期369-373,共5页Acta Armamentarii

摘　　要：为研究重复使用运载器末端区域能量管理段下滑轨迹线的鲁棒性,提出一种基于质点动力学的轨迹鲁棒性分析方法。首先给出基于质点动力学的轨迹设计方法,根据轨迹设计的原理,提出TAEM轨迹鲁棒性的概念,给出了影响TAEM轨迹鲁棒性的不确定性因素。然后定义了能量梯度,将能量梯度作为评价能量积累和消耗能力的指标,并分析了影响能量梯度的主要因素。接着给出了末端区域能量管理轨迹鲁棒性的分析方法。最后,以某重复使用运载器(RLV)为例,分析了建模不确定性对能量走廊和标称轨迹剖面的影响。In order to research the robustness of terminal area energy management（TAEM） trajectory for reusable launch vehicle（RLV）, a method of trajectory robustness assessing based on nonlinear equations of motion was developed. A trajectory design method basing on the nonlinear equations of motion was introduced. According to the principle of the method, the concept of TAEM trajectory robustness was defined, and uncertainties of the influence on TAEM trajectory robustness were listed. The energy gradient was defined as the measure of the ability to increase and decrease energy to remove energy dispersions, and the primary factors affecting the energy gradient were listed. The method of trajectory robustness analysis for TAEM was developed. Taking a certain RLV demonstrator for example, the influences of the model uncertainties on the energy corridor and the nominal trajectory robustness were analyzed.

关 键 词：飞行器控制 导航技术 轨迹鲁棒性 末端区域能量管理 重复使用运载器 

分 类 号：V249[航空宇航科学与技术—飞行器设计] V448