摘要
针对可重复使用飞行器陶瓷瓦热防护系统再入过程中防热和承载问题,结合有限元软件ANSYS建立热分析模型和结构模型,模拟再入过程中陶瓷瓦热防护系统防热和承载作用,预测内部瞬态温度响应。然后利用热模型和结构模型以及ANSYS软件优化模块对陶瓷瓦热防护系统尺寸进行优化,并且对比考虑内部热损耗和不考虑内部热损耗两种情况下的优化结果,最后根据结果确定防热瓦之间缝隙的尺寸。
The heat transfer in the ceramic tile thermal protection system and the load bearing during re-entry process were analyzed by thermal analysis model and the structural model that were established by finite element software ANSYS.The thermal analysis model and the structural model were used to forecast the internal transient state temperature response.Then the module of ANSYS was used to optimize the size of the ceramic tile thermal protection system and prepared with the differences between two different situations whether considering the loss of the internal.Finally,determining the gap size between the tiles according to results.
出处
《飞机设计》
2011年第3期24-27,共4页
Aircraft Design
关键词
可重复使用飞行器
陶瓷瓦热防护系统
有限元
尺寸优化
缝隙尺寸
reusable launch vehicle
ceramic tile thermal protection system
finite element
size optimization
gap size
