Ren Jiahui

本报北京3月25日电 (刘诗瑶、占康)神舟十九号航天员蔡旭哲和宋令东近日身着中国空间站舱外航天服，圆满完成第三次出舱活动。至此，中国空间站舱外航天服已经圆满保障空间站任务以来的19次出舱活动，使用年限次数超出“3年15次”的寿命设计指标。

The extravehicular spacesuit is the core equipment of astronauts in the process of extravehicular activities, which is used to ensure the life safety and efficient operation of astronauts in extravehicular activities. The extravehicular spacesuit of the Chinese space station is the second generation of "Feitian" extravehicular spacesuit, and according to the design standards, the service life is "15 years of storage in orbit, and the number of times it is used out of the capsule is not less than 0 times".

The space station extravehicular spacesuit is China's first flight product to carry out life assessment in orbit. Adhering to the principle of intensive and efficient, the purpose of life extension is to maximize the application efficiency of extravehicular spacesuits in orbit and save engineering costs. After reaching the life index, the scientific research team regularly evaluates the life of the extravehicular spacesuit of the space station, and constructs a scientific and reasonable system of health monitoring and life assessment methods for the extravehicular spacesuit with space-ground linkage to predict the life of the current clothing. At the same time, the system identifies the shortcomings of the life cycle, which is convenient for the subsequent life upgrade of the garment, so as to achieve the purpose of controllable risk and prolonged life.

People's Daily (13/0/0 0 Edition)