Why doesn't the space clerk out of work "drift away"?Southern Airlines expert analysis

On September 1st, Shenzhou 14 astronaut Chen Dong and astronaut Liu Yang successfully came out of the cabin of the Tiantian Experimental Cels. This is the fifth out -of -the cabin operation of my country's astronauts at the China Space Station. It is also the first time that it has implemented off -compartment activities from the inspiration of the Tiangtian Experimental Card. What are the changes in the fifth time compared to the first four out of the Chinese space station? The astronauts "work" in space, why not float away? The reporter specially invited experts from Nanjing University of Aeronautics and Astronautics for analysis.

Picture source Chinese manned space

"Drill" from top to bottom, first see the scene of the earth

Earlier, the China Space Station had conducted four out -of -the -cabin operations, and astronauts came out of the compartment of the nodes of the sky and the core cabin. Compared with the first four times, the biggest change may be the comfort of astronauts. According to the information that has been published, compared to the previous Tianhe core cabin node compartment, the "big room" after the replacement -Ask the Tianjin Experimental Curbine Spite Cars has a larger and more convenient space. Home, travel to space. Different from the previous "climbing" from the bottom up, the outlet of the weather gates is "drilled" from top to bottom. Therefore, God 14th astronauts will not see the starry sky first after leaving the cabin, but will take the lead in seeing To the earth scene.

During the out of the cabin, the two astronauts need to complete the work of the installation of the foot limiter and the outside workbench. With the support of the small robotic arm, the installation of the expansion of the experimental compartment pumping group, the inquiry of the panoramic camera of the sky -to -day experimental cabin rising camera rises Wait for homework, and carry out an external transfer emergency return ability verification.

It is worth mentioning that among the two astronauts who came out of this cabin, a female astronaut Liu Yang. Wearing a new generation of spaces out of the cabin, it successfully completed the mission of the cabin. Earlier, astronaut Wang Yaping also successfully came out of the cabin and became the first female astronaut in China to implement the outlet event. Wenxin, a professor at the School of Aerospace of Nanjing University of Aeronautics and Astronautics, told reporters that although there were also female astronauts at the International Space Station, they had a small number of them. "This is because the threshold of women who receive radiation is lower than men. Therefore, men in aerospace clothes are more suitable when working in space. The design of aerospace clothing has a more complete design, especially in terms of resistance to radiation. This is also a display of comprehensive aerospace strength. "

Why doesn't the space clerk out of the cabin "drift away"?

In the weightless space, astronauts are "floating" in the space station. Therefore, some readers have questioned, why don't astronauts go out of the space and enter space? Experts told reporters that whether in the cabin or cabin of the space station, scientific researchers have arranged a number of "handles". The astronauts "float" to move them. Therefore, they only need to hold the handle to the handle. Can successfully move. There are also safe ropes to protect outside the cabin.

The most important point is that before entering space, in order to ensure the accuracy of the operation in the weightless environment, it is necessary to go through hard underwater training tests on the earth.

Professor Wen Xin introduced that underwater training is the work ability of astronauts in a heavy environment. In the underwater environment, because the buoyancy and gravity offset each other, scientific researchers can simulate a state of weight for astronauts. Eating, working, and even penetrating off -space clothes in a heavy environment are "difficulties".

The reporter learned that the underwater training of the astronauts contributed the contribution of China Southern Airlines researchers. Entrusted by the Astronaut Center and the Shanghai Aerospace System Institute of Engineering, Associate Professor Zhang Deli of China Southern Airlines Institute of Mechanical and Electrical Institute led the research team to develop the "underwater robotic arm and its intelligent control system". As well as designated operations support, it is an important guarantee for the experimental verification of mission engineering and space staff training.

Under the guidance of the overall unit of the Aerospace Council Center, the Shanghai Aviation System Engineering Research Institute and the research team through technical channel simulation verification, overall solution design, engineering implementation, debugging joint test, and trial operation, innovatively developed the first 10 -meter -level water -level water in China Lower work space, high reliability, high safety and underwater robotic arm.

Among them, the research team faced the training tasks of the neutral buoyant sink of the immersive environment, and carried out academic research and engineering development of underwater robot arm control systems, human -machine interaction systems, and power supply support systems.According to reports, the content developed by the research group is the core command hub of the entire system.Break through the underwater path planning technology based on multi -sensing fusion and optimized algorithm, the interactive control technology of underwater robotic arm man -machine human machine, the large -sized space collision detection and prediction technology of virtual twinThe reliable and efficient operation of the system is a breakthrough of underwater robot control technology in manned aerospace simulation of weightless training.Yangtze Evening News/Zi Niu Journalist Yang Tianzi

Video source: CMS

Edit: Qin Xiaoyi

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