CAJ | 학술논문

针对亚轨道飞行器上升段由于动力故障任务中止时再入返回的问题,考虑飞行模型简化和故障后的燃料处理方案,通过遗传算法优化设计最优返回轨迹,优化时选取经向飞行航程最远作为性能指标,并采用遗传算法,解决用于再入轨迹优化所涉及的关键问题,并进行仿真.仿真结果表明,方法不但满足飞行器返回过程中加热率、过载、动压约束以及终端状态约束,能够通过飞行航程最远消耗飞行器能量从而安全着陆,而且可以较快地搜索到全局最优解,能够用于亚轨道飞行器故障再入轨迹的优化设计.
침대아궤도비행기상승단유우동력고장임무중지시재입반회적문제,고필비행모형간화화고장후적연료처리방안,통과유전산법우화설계최우반회궤적,우화시선취경향비행항정최원작위성능지표,병채용유전산법,해결용우재입궤적우화소섭급적관건문제,병진행방진.방진결과표명,방법불단만족비행기반회과정중가열솔、과재、동압약속이급종단상태약속,능구통과비행항정최원소모비행기능량종이안전착륙,이차가이교쾌지수색도전국최우해,능구용우아궤도비행기고장재입궤적적우화설계.
Considering the mission abort of engine failure during the ascent stage of Suborbital Reusable Launch Vehicle,the simple model and the failure project,genetic algorithms is used to design the optimal reentry trajectory,the longitudinal flight range is defined ag the performance index,and some key problems such as parameterized method are discussed in detail.Simulation results demonstrate that not only the designed reentry trajectory satisfies various constraints such as ovedoad,heat rate,dynamic pressure and the boundary constraints,the optimal trajectory maximizes flight range and a safe landing can be reached,but also the optimization results can be obtained faster.The genefic algorithms of Suborbital Reusable Launch Vehicle can be used to design optimization reentry trajectory.