基于背壁温度测量的刚性热防护瓦健康监测原理样机设计  

Health monitoring prototype design for rigid thermal protection tile based on back-wall temperature detection

作　　者：务颖欣 许素宇 徐大富 徐超[1] Wu Yingxin;Xu Suyu;Xu Dafu;Xu Chao(School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China;Shanghai Institute of Aerospace Systems Engineering,Shanghai 201108,China)

机构地区：[1]西北工业大学航天学院,西安710072 [2]上海宇航系统工程研究所,上海201108

出　　处：《空天技术》2024年第6期75-83,共9页Aerospace Technology

基　　金：“十四五”民用航天技术预先研究项目。

摘　　要：针对可重复使用的空天飞行器服役过程中,刚性热防护瓦易于发生损伤进而威胁飞行安全的问题,根据监测热防护瓦背壁温度能够反映其损伤状态的原理,提出了一种小型化、低功耗的有源无线温度监测节点。通过构建监测节点与热防护系统的一体化温度监测网络,实现了对热防护瓦系统结构健康状态的实时监测,并给出了原理样机的详细设计。同时,对不同程度模拟热防护瓦结构的凿坑损伤、裂纹损伤开展了地面模拟实验验证,实验结果证实了小型化原理样机的可行性,为进一步开展热防护结构健康监测系统研制奠定了基础。In response to the issue of potential damage to rigid thermal protection tiles during the service life of reusable aerospace vehicles,which may pose a threat to flight safety.A miniaturized,low-power active wireless temperature monitoring node is proposed based on the principle that monitoring the back wall temperature of thermal protection tiles can reflect their damage status.By constructing an integrated temperature monitoring network between the monitoring node and the thermal protection system,real-time monitoring of the structural health status of the thermal protection tile system is achieved,and a detailed design of the prototype based on this principle is provided.Ground simulation experiments are conducted to verify the damage caused by different levels of simulated pit and crack damage to thermal protection tile structures.The experimental results confirmed the feasibility of the designed small-sized prototype,laying the foundation for further development of a thermal protection structure health monitoring system.

关 键 词：空天飞行器 热防护系统 损伤监测 温度在线监测 原理样机 

分 类 号：V475[航空宇航科学与技术—飞行器设计]