升力体式密闭救生舱无控制再入研究  

Researches on non-control reentry for lifting-type rescue capsule

作　　者：王禹[1] 张劲柏[1] 洪娟[2] 徐航[2] 兰世隆[1] 

机构地区：[1]北京航空航天大学国家计算流体力学实验室,北京100191 [2]中航工业航宇救生装备有限公司,湖北襄阳441003

出　　处：《飞行力学》2017年第1期21-24,38,共5页Flight Dynamics

基　　金：航空科学基金资助(20140091555431)

摘　　要：将救生舱选定为升力体模型,利用数值模拟的方法动态研究救生舱再入过程中的稳定性和减速性,分析无主动控制的救生舱返回的可行性。针对高超声速和马赫数小于4两种工况,分别采用牛顿理论方法和CFD方法进行气动力计算;利用气动特性计算结果求解六自由度轨道仿真动力学方程进行轨迹计算。研究结果显示,救生舱初始再入条件合适时,其再入过程具有稳定性;仅依靠目前救生舱外形的结构减速不能满足减速性要求,需辅助其他减速措施。Lifting body model was used for rescue capsule. Stability and deceleration of rescue capsule during reentry process were studied dynamically with numerical simulation,and the feasibility of non-control rescue capsule＇s reentry was analyzed. For the conditions of hypersonic and Ma 4,the aerodynamic calculations were proceeded respectively with Newton theory and CFD method. With the results of aerodynamics characteristics,the trajectories were computed by solving six degree of freedom trajectory simulation dynamics equations. Study results show that rescue capsule has stability if its reentry initial conditions are appropriate. In addition,the deceleration only by its＇ structure can not meet design requirements,it needs to be assisted by other deceleration measures.

关 键 词：救生舱 高超声速 稳定性 减速性 数值计算 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程] V412.4