首套！空间站舱外服B“4年20次”延寿 新舱外服D、E将投用

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]