Cctv newsAccording to the China Manned Space Engineering Office, at 8: 11 Beijing time today (July 4, 2021), astronaut Liu Boming successfully opened the exit door of the node module of Tianhe core module. As of 11: 02, astronauts Liu Boming and Tang Hongbo, dressed in a new generation of "Feitian" extravehicular spacesuit independently developed by China, have successfully left the space station from the node module of Tianhe core module, and have completed the work of installing the foot limiter and the extravehicular workbench on the robotic arm. With the support of the robotic arm, they will cooperate with each other to carry out the related equipment assembly work outside the space station. In the meantime, Nie Haisheng, an astronaut in the cabin, cooperated and supported two astronauts to carry out extravehicular operations.
What tasks did the three astronauts perform in this extravehicular mission? How is the division of labor between them?
Two astronauts left the cabin and one conducted cooperation in the cabin.
The extravehicular mission was jointly carried out by three astronauts, two of whom changed their extravehicular spacesuits and one astronaut performed command and cooperation tasks in the cabin.
Lift panoramic camera position to verify autonomous emergency return
The mission of extravehicular activity is mainly to lift the position of panoramic camera outside Tianhe core extravehicular activity, and verify the ability of emergency return in case of emergency. The extravehicular activity was completed by two astronauts AB. After the extravehicular activity, astronaut A was taken to the operating point by the mechanical arm and stood on the mechanical arm to complete the operation. Astronaut B crawled to the operating point autonomously outside the cabin to assist astronaut A on the mechanical arm to complete the operation.
It takes about six hours for astronauts to complete this extravehicular task, 2.5 hours for preparation and one hour for operation. In addition to lifting the position of the panoramic camera, it is also necessary to verify the emergency return. This work will be done by astronaut B.
There were two extravehicular operations during the Shenzhou-12 mission.
During the Shenzhou-12 mission, three astronauts will complete two extravehicular operations, which is also a key technology that must be mastered in building a space station.
PG One, head of the on-orbit maintenance technology laboratory of manned spacecraft in the Fifth Academy of Aerospace Science and Technology Group:Extravehicular activities, whether in the International Space Station or the China Space Station, are actually a necessary technology for on-orbit assembly and construction. Now we are assembling and building the space station in the cabin, lifting the camera bracket, which is equivalent to perfecting our infrastructure, and the follow-up may be a lot of experiments in space.