月地高速再入耐烧蚀天线设计与验证  

The ablation antenna design and verification of circumlunar free return and reentry flight vehicle

作　　者：陈刚[1] 杨昌昊[1] 孙大媛[1] 智国平[1] 

机构地区：[1]中国空间技术研究院总体部,北京100094

出　　处：《中国科学：技术科学》2015年第3期268-275,共8页Scientia Sinica(Technologica)

基　　金：国家中长期科技发展规划重大专项资助项目

摘　　要：月地高速再入返回飞行器是我国首次深空再入返回的航天器,飞行器以第二宇宙速度再入地球大气层,与近地轨道再入返回的返回式卫星及飞船相比,再入热环境条件更为严酷,具有热流密度峰值高、比热焓高、总加热量大、加热时间长的特点,对于再入飞行器天线设计要求更为苛刻.本文对月地高速再入返回轻小型宽频耐烧蚀天线设计方法以及试验验证情况进行了阐述,给出了试验验证结果,飞行验证结果表明,耐烧蚀天线的防隔热、电、机一体化协同设计与验证技术得到了充分验证,各项性能满足总体指标要求.The circumlunar return and reentry spacecraft is the first return and reentry spacecraft applied for deep space mission in China, which maneuvered into aerosphere of the earth at 2th cosmic velocity by suffering an even harder thermal environment with higher peak of thermal current density, higher specific heat enthalpy, higher quantity of heat and longer heating duration, compared with reentry capsule and spaceship in near earth orbit. Therefore, antenna used for circumlunar return and reentry spacecraft must satisfy an even harder design requirement. In this article, design techniques and performance verification process and result for a light and miniaturized ablation antenna operated within wide frequency range applied for circumlunar return and reentry mission are introduced. In-orbit verification result proves that heat insulation design, coordinated design of electrical and mechanical components of ablation antenna have been verified absolutely, and all of the performance complies with the target requirement of the spacecraft system.

关 键 词：月地高速再入 耐烧蚀 宽频带 轻小型 天线 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]