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大型飞行器表面烧蚀防热涂层低温快速补涂工艺
张晶, 肖世明, 杨立乐, 郑玉杰, 李庆贺
首都航天机械有限公司,北京 100076
摘要:
采用补涂工艺对烧蚀防热涂层进行低温快速补涂,并针对飞行器临飞行前状态,制定了涂层结合力提升、快速固化、多余物控制等的方案。电弧风洞试验表明:补涂涂层烧蚀量小,最高表面温度580 ℃,最高背面温度64 ℃,具有良好的防热性能。采用本工艺补涂涂层进行了多次飞行试验并取得了成功,表明本补涂工艺具有良好的工艺稳定性。
关键词:  烧蚀防热涂层  补涂工艺  结合力  涂层固化
DOI:10.12044/j.issn.1007-2330.2019.03.018
分类号:
基金项目:
Low Temperature Rapid Recoating Process of Ablative Insulation Coating for Large Spacecraft
ZHANG Jing, XIAO Shiming, YANG Lile, ZHENG Yujie, LI Qinghe
Capital Aerospace Machinery Co.,Ltd.Beijing 100076
Abstract:
The low-temperature rapid recoating process of the ablative anti-heat coating was investigated.Several approaches for improving the adhesion of the coating,rapidly solidifying,and controlling the excess substance were proposed according to the pre-flight state of the aircraft.The wind tunnel test shows that the ablation coating has a small amount of ablation and good heat resistance,with a maximum surface and back temperature of 580 ℃ and 64 ℃,respectively.The coating deposited with this technology is tested successfully in the aerodynamic environment for many times,demonstrating that this recoating process has good process stability.
Key words:  Ablative thermal coating  Recoating process  Adhesion strength  Solidification of the coating