再入飞行器多层隔热结构优化分析  

Structural Optimization of Multilayer Insulation for Reentry Vehicles

作　　者：赵玲[1] 吕国志[1] 任克亮[1] 李元林[1] 

机构地区：[1]西北工业大学504教研室,陕西西安710072

出　　处：《航空学报》2007年第6期1345-1350,共6页Acta Aeronautica et Astronautica Sinica

摘　　要：针对可重复使用飞行器再入过程中热防护系统的复杂传热问题,采用有限元方法对可重复使用飞行器多层隔热结构(MLI)进行参数化求解,预测内部结构瞬态温度响应,对具4层反射屏的多层隔热结构进行优化设计,分析影响隔热性能的多个因素(如反射屏的分布,屏间纤维厚度和最上层反射屏与热边界距离)对隔热性能的影响规律,为多层隔热结构的优化设计提供相关参考。The combined radiation and conduction heat transfer in multilayer insulation （MLI） of reusable lunch vehicle was investigated by the finite element method to simulate reentry aerodynamic heating conditions. The temperature field in MLI was presented. The effects of the design parameters such as foil arrangement, foil spacing and the distance form the top foil to the heat boundary were analyzed to give an instruction for MLI optimum design.

关 键 词：热防护系统 多层隔热结构 参数优化 重复使用飞行器 

分 类 号：V475[航空宇航科学与技术—飞行器设计]