Mid -Autumn Festival wishes from space, please check!

"I'm out of the cabin, it feels good!"

At 0:33 on September 222, 2022, Beijing time, after about 6 hours of outlet activities, Shenzhou 14 astronauts Chen Dong, Liu Yang, and Cai Xuzhe worked closely to complete all the tasks during the compartment activities. Chen Dong and Liu Yang Back to the day to ask the sky experimental cabin, the outlet event achieved a complete success.

This is the first time that the Chinese astronauts have implemented outside the cabin of the air gates of the Tiangtian Experimental Countermeter. It is also the first time that the astronauts Chen Dong and Liu Yang have performed the outlet event. In addition, the first use of small robotic arm auxiliary outlets can be described as newcomers and new people and new people. Cabin, new state.

Shenzhou 14th astronaut Liu Yang (left) and Chen Dong (right) ended the departure mission and waved their hands before returning. Picture source: Xinhua News Agency

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In space out of space, astronauts are "exposed" in outer space, facing the temperature difference between temperature difference between 200 degrees Celsius and harsh conditions such as space radiation and vacuum environment. As a space suit that guarantees the safety of life and supports off -cabin activities, it is hundreds of kilograms. Aerospace staff must control the physical condition in this "humanoid aircraft", and perform space -walking, climbing and refined off -caps. In fact, the difficulties are heavy.

This outlet event is the first out of the space station construction stage. Earlier, the 4th out of Shenzhou 12 and Shenzhou 13 have fully verified the performance of the space uniforms outside the cabin and the ability of Chinese aerospace members to work for a long time.

However, the outlet event of Shenzhou 14 still faces new challenges, and there are multiple "first" -

For astronauts Chen Dong and Liu Yang, although they have had more than once space flight experience, it is still the first time to perform the outlet mission. From the 85 cm cabin caliber to 1 meter; for the first time, a small robotic arm transfer astronauts were used. There was no actual experience before.

There are also many favorable factors. For example, the communication coverage between heaven and earth has been further improved. For the support of heaven and earth and the ground support, the time is more abundant.

These new states need to be prepared in advance and respond on the spot. For example, this outlet event was carried out in the state of asking the sky cabin to join the space station. The space station has greatly expanded. The astronauts face a larger and more complicated aircraft combination.

On the afternoon of September 1st, the astronauts closed the door of the section of the sky cabin, and then Chen Dong and Liu Yang entered the space uniforms outside the cabin to prepare before out of the cabin. At 18:26, Chen Dong successfully opened the cabin door of the Tiantian Experimental Counterbill. At 19:09, Chen Dong and Liu Yang successfully came out of the cabin. Cai Xuzhe cooperated in the core cabin to support two out -of -class spacemen to conduct off -cabin operations.

The astronaut Chen Dong successfully came out of the cabin. Picture source: Xinhua News Agency

For the 6 -hour outlet event, the heavens and the earth are closely coordinated, and the inside and outside the cabin cooperate closely. It has completed the task of installing the installation of the skycase expansion pump group, the rising panoramic camera of the sky compartment, and the autonomous emergency return verification of the cabin. Essence

However, these 6 hours are high -intensity out of the cabin in a closed space suit, and the physical consumption is huge. In addition to carried about 500 ml of water, the two astronauts who came out of the cabin had no other supplement. It can be said that every action that astronauts do in the sky are a huge test of technology and courage.

There is a small detail here. When Liu Yang said, "Happy Mid -Autumn Festival in advance", the ground team immediately replied that "you also have to eat moon cakes." The details of the dialogue between these worlds and earth make the space out of the space very warm.

Astronaut Chen Dong (top) and Liu Yang (bottom) conducted off -cabin operations. Picture source: Xinhua News Agency

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When the Shenzhou 12 and Shenzhou 13th multiplication group out of the cabin, the cabin door that passed the cabin was located at the outlet of the core compartment of the space station, with a caliber of the cabin door 85 cm. This time, the Shenzhou 14th astronauts "went out" from the air gate of the Tiangtian experimental cabin, and the caliber of the cabin door reached 1 meter. The astronauts could bring the equipment more freely to "get out of the house and travel space."

Don't underestimate these 15 cm, the increase in the size of the cabin is actually the delicate balance between "rigid" and "soft". Under the condition that the operating power of the astronauts remain unchanged, the cabin door with a caliber of 1 meter is sealed, and the development difficulty is more difficult than 85 cm. Responsible for the structure and institutional team of the Fifth Hospital of China Aerospace Science and Technology Group, which is responsible for the total development of the China Aerospace Science and Technology Group.

The opening door is not as simple as pushing the door. From a technical point of view, the 1 -meter door belongs to a complex spacecraft institution, involving seals, transmission, locking, guidance, lubrication, man -machine work and other disciplines. The more complicated the product, the more complicated the operation of the astronauts. After the exquisite design of the cabin design team, before the astronauts are out of the cabin, they only need to use the supporting handle on the door door to rotate and unlock them. Use the helping agency to eliminate the pressure. Then drive the door handle to open the door. The cabin door is also equipped with a tailor -made protective cover to ensure the safe use of the Cabin Men.

In addition, a series of space equipment such as "safety rope", "lighting", and off -cabin maintenance tools are full of technology.

Safety rope is the "lifeline" connected to the space officer and the space station. During Shenzhou VII mission, astronauts Zhai Zhigang completed China's first space out of space. At that time, the safety lines used in the cabin were fixed length lines, which was only more than 1 meter effective.

In the era of the space station, astronauts must complete a number of outlet tasks such as equipment installation and maintenance. The outlet range is larger, the operation is more difficult, and the safety requirements are stricter. Safety ropes are not only longer, but also have to be scalable. It is necessary to ensure a safe connection between the astronauts and the space station compartment more than 10 meters. , Test of space irradiation and space particles. The development team of the 529th Factory of the Fifth Hospital of China Aerospace Science and Technology Group conducted a research and development team, and proposed a clever design plan to ensure that more than 10 meters long steel wire rope can be tens of thousands of times in the small space of the institution, repetitive and orderly entangled.

Since the successful settlement on June 5 this year, the Shenzhou 14th astronauts have been working and living in the orbit for about 90 days. In addition to this out -of -the cabin mission, they have also completed the transfer of freight ship supplies, the interrogation of the sky cabin platform on the rail test, the scientific experimental cabinet unlocking and testing, the small robotic arm unlocking and the rail test, the space station combination management and other tasks and other tasks Essence

China Space Station, it feels better and better!

Text/Yu Jianbin, Zhu Xiaozheng

Edit/Nine Duan, Diancang

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