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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 high-speed reentry and return of lunar spacecraft is the first spacecraft to enter and return in deep space in our country. The aircraft reenters the Earth’s atmosphere at the second cosmic speed. Compared with the return satellites and spacecraft returning and returning from near-Earth orbit, the aircraft reentry into the hot environment The conditions are more harsh, with the characteristics of high peak heat flux density, high specific enthalpy, large total heating capacity and long heating time, which are more demanding for reentry vehicle antenna design. The design method of the ablation antenna and the experimental verification are described. The experimental verification results are given. The flight verification results show that the anti-thermal insulation, electro-mechanical integrated design and verification technology of the ablation antenna is fully verified. Item performance to meet the overall index requirements.