With the development of reusable launch vehicles , the thermal protection system has been oriented by the idea of incorporate design which involves thermal protection - structure - thrust system . at the same time , the weight proportion of thermal protection system has been reduced , but the working temperature of thermal protection system has been increased 随着可重复使用航天器的发展,热防护系统在向着防热-结构-推进系统一体化设计的方向发展,与此同时,整个防热系统在总起飞重量中所占的重量比例也在降低,而使用温度升高,即要求防热结构日趋先进。
In conclusion , the method of adding a function layer through type winding will improve the insulating performances greatly while maintaining its original ablative performances . compared with other technical schemes , no special equipment is needed . hence , sufficient raw materials and feasible process enable its promising prospect 通过以上研究，得到以下结论：采用布带缠绕工艺、在防热层内添加隔热功能层的方案能显著提高其隔热性能，同时保持原有防热套的烧蚀性能和其他物理机械性能，该方案对后续工序无显著影响。
Based on a cone - shaped compound heatshield , a series of research work has been done from the investigation of theoretical analyses of ablative and insulating principles and technical experiments . 1 based on the exploration of improving material performances , a feasible scheme of adding insulating functional layer is proposed ; 2 a simplified calculation method is proposed via establishing fea ( fmite element analysis ) and instantaneous heat transmission is calculated with the mentioned method ; 3 a practical engineering scheme is proposed through a series of experiments ; 4 the interface problems of the function layer are solved through co - curing method and successful samples are manufactured ; 5 in order to estimate properties , the heatshield was anatomized engineering applied possibility is explored on the analyses of performance evaluation by testing mechanical properties , coefficient of heat conductivity and doing dynamic ablative experiments , also , the comparison with that of the required materials is done 本文以一锥形复合防热套为研究对象，从烧蚀、隔热机理的理论分析和工艺试验两方面，进行了一下研究工作： 1 、通过对提高材料及制品通过对提高材料及制品隔热性能的多种途径进行探讨，提出了采用添加隔热功能层，研究复合型大面积防热套是理论有效、工艺可行的方案； 2 、通过建立有限元分析模型，对防热套的烧蚀隔热行为进行了理论分析，提出了简化的隔热计算方法，并用该方法对复合型防热套的瞬态传热模型进行了分析计算； 3 、通过复合型防热套的工艺探索试验，提出了一种工程应用上切实可行的工艺方案。
