本报北京电 （刘诗瑶、占康）前不久，神舟二十号乘组圆满完成第三次出舱活动。记者从中国航天员 科研训练中心获悉：此次任务中，陈冬身着的空间站舱外服B已累计保障了20次出舱任务，成为我国空 间站首套实现"4年20次"延寿目标的舱外服。该装备已由11名航天员在8次载人飞行任务中接力使用，经 动态精准评估，其状态稳定良好，为航天服工程应用质效提升和空间站常态化出舱活动任务提供了坚实 支撑。 随天舟九号货运飞船上行2套新舱外服D、E已完成解包检测，状态良好，将在未来出舱任务中逐步投入 使用。 （文章来源：人民日报） 作为保障航天员安全、高效开展出舱活动的核心装备，空间站舱外服功能与性能全面大幅提升，相比我 国第一代舱外服，突破了长寿命、高安全可靠性、高效作业支持等关键技术，有力保障了我国空间站建 造期及运营期的出舱活动任务。 空间站舱外服成为首次在轨开展寿命评估并延寿使用的飞行产品。截止到2024年初，在轨飞行的舱外服 已经接近3年15次的寿命设计指标极限。为了准确评估舱外服的剩余寿命，团队制定了科学合理的寿命 评估和健康监测方案以及在轨检测方法。通过深入挖掘在轨和地面试验数据，开展大量的材料级和产品 级的验证试验，实 ...

Core Insights - The Shenzhou-20 mission successfully completed its third extravehicular activity (EVA) on August 15, with astronaut Chen Dong wearing the space station's extravehicular suit B, which has now supported 20 EVAs, achieving China's goal of "4 years and 20 times" for suit longevity [1] - The suit has been used by 11 astronauts across 8 manned missions, demonstrating stable performance and providing strong support for the operational tasks of the space station [1] - The space station's extravehicular suit has significantly improved functionality and performance compared to the first-generation suits, enhancing longevity, safety, and operational efficiency [1] - As of early 2024, the extravehicular suit is approaching the design limit of "3 years and 15 times" for in-orbit use, necessitating a scientific approach to assess its remaining lifespan [1] - A health monitoring and lifespan assessment plan has been developed to ensure the safety and reliability of the suit during its in-orbit usage [1] - Two new extravehicular suits D and E have been successfully unpacked and tested, ready for future EVA tasks [2]

Core Points - The Shenzhou-20 crew successfully completed their third extravehicular activity, marking a significant milestone for China's space station program [1] - The space suit B has achieved a remarkable record of 20 extravehicular missions over four years, demonstrating its durability and reliability [1][10] - The space suits A and B were both launched with the Tianzhou-2 mission in 2021, with suit A having been used 18 times and suit B reaching its 20th use [12] Summary by Category Extravehicular Activities - The Shenzhou-20 mission involved astronauts Chen Dong, Liu Boming, and Tang Hongbo performing tasks outside the space station, showcasing the effectiveness of the new generation "Feitian" space suits [4][7] - The astronauts utilized a robotic arm for support during their nearly two-hour spacewalk, indicating advancements in operational capabilities [7] Space Suit Performance - Space suit B has been used by 11 astronauts across 8 manned missions, with assessments confirming its stable condition, which supports ongoing extravehicular activities [10] - The space suits are the first in-orbit products to undergo lifespan assessment and extension, highlighting advancements in space suit technology [14] Future Developments - Two new space suits D and E have been prepared for future missions, indicating ongoing improvements and readiness for upcoming extravehicular tasks [14]

来源：人民日报微博 2025年8月15日，神舟二十号乘组圆满完成第三次出舱活动。此次任务中，陈冬身着的空间站舱外服B 已累计保障了20次出舱任务，成为我国空间站首套实现"4年20次"延寿目标的舱外服。该装备已由11名 航天员在8次载人飞行任务中接力使用，经动态精准评估其状态稳定良好，为航天服工程应用质效提升 和空间站常态化出舱活动任务提供了坚实支撑。 人民日报 ** 25-8-18 11:02 来自 微博网页版 【祝贺!#我国空间站舱外服新突破#】#我国空间站舱外服B实现4年20次延寿# 2025年8月15日,神舟二十号乘组圆满完成第三次出舱活动。此次任务中,陈冬身 着的空间站舱外服B已累计保障了20次出舱任务,成为我国空间站直套实现"4年20 次"延寿目标的舱外服。该装备已由11名航天员在8次载人飞行任务中接力使用, 经动态精准评估其状态稳定良好,为航天服工程应用质效提升和空间站常态化出舱 活动任务提供了坚实支撑。 作为保障航天员安全、高效开展出舱活动的核心装备,空间站舱外服功能与性能全 面大幅提升,相比我国第一代舱外服,突破了长寿命、高安全可靠性、高效作业支 持等关键技术,有力保障了我国空间站建造期及运营 ...