中国空间站舱外航天服B累计保障20次出舱任务 实现“4年20次”延寿目标

Core Points - The Shenzhou-20 crew successfully completed their third extravehicular activity, marking a significant milestone for China's space program [1] - The space station's extravehicular suit B has achieved a remarkable record of 20 extravehicular tasks over four years, surpassing its initial design life of three years and 15 uses [1][2] - The second-generation "Feitian" extravehicular suits D and E have been delivered to the Chinese space station and are set to be used in future extravehicular activities [2] Group 1 - The extravehicular suit B has been used by 11 astronauts across 8 manned missions, demonstrating its stability and reliability for ongoing space station operations [1] - The suit is crucial for ensuring the safety and efficiency of astronauts during extravehicular activities, highlighting its role in the success of the space station's construction and operation [1] - The second-generation suits have advanced technologies that enhance longevity, safety, and operational efficiency compared to the first generation [2] Group 2 - A scientific and reasonable lifespan assessment and health monitoring plan has been developed to evaluate the remaining lifespan of the extravehicular suits [2] - The successful dynamic assessment of the suit's health and lifespan ensures its safe and reliable use in orbit, making it the first flight product to undergo such evaluations [2] - The recent supply mission included two new second-generation suits, which have passed inspection and are ready for deployment in upcoming missions [2]