God 14th astronauts will choose to leave the cabin for the second time!Why is the cabin again in the short term?Expert Q & A

According to the China Manned Aerospace Engineering Office, the Shenzhou 14th Aerospace Workers will choose to implement the second out -of -class event. Since the successful completion of the first -cabin event on September 2 this year, the Shenzhou No. 14 Aerospace Commission has completed the recovery of the cabin activities, the mechanical arm testing and operation, and the preparation of the second out -of -cabin event. Research, higher plant training and other space scientific reality (trial) projects. At present, Shenzhou No. 14 astronauts have a good state, the space station combination is stable, and it has the conditions for carrying out the departure activities.

Card out of the cabin in the short term to verify the space station normally out

In the early morning of September 2nd, Shenzhou 14th astronauts successfully completed the first out -of -class event. In the short term, I choose to get out of the cabin again. Why is such a tight outlet arrangement?

In the past six months, the astronauts multiplied twice during the rail, each time the interval was more than a month. The first out of the Shenzhou 14th multiplication group has just ended about half a month.

Pan Shunliang, deputy chief chief of the General Design Department of the Fifth Hospital of Aerospace Science and Technology Group: In fact, it has something to do with the task planning of the space station. This time, the task of the Fourteenth multiplication group is still full, because the Dream Sky Experimental Cels will be launched immediately. Before the launch of the Mengtian Experiment, the combination of the space station must be transferred. After the transfer (space station) is the "L" type, but the "one" shape structure is more suitable for the outlet. The tight outlet tasks can actually verify the normal outlets.

Pan Shunliang told reporters that the normalized outlets verified by the two close tasks are the ability to have space stations. If you want to do it, you need astronauts and ground flight control staff to master the preparations for the compartment. Real tacit cooperation.

Pan Shunliang, deputy chief chief of the overall design department of the Fifth Hospital of Aerospace Science and Technology Group: two spacemen outside the cabin and astronauts inside the cabin must coordinate; other departments including ground, including our space station system, also the astronaut system, Beijing (Beijing (Beijing (Beijing (Beijing (Beijing (Beijing (Beijing (Beijing (Beijing Aerospace flight control) center and measurement and control communication system must also have a large synergy on the ground. Especially in the operation stage, the solar wing of the core compartment may need to be transferred to both sides of the experimental cabin. This actually requires a normalized multiple out of the cabin, which is also equivalent to advanced exercise verification on the outlet activities.

Use the outlet of the weather gates to ensure the stability and safety of the cabin

For the first time the Shenzhou 14th astronauts multiplied by the group, the weather gate was used as the outlet. After the interval of the experimental compartment and the core compartment, the main outlet and mouth of the execution of the outlet activity transferred from the node compartment of the core compartment to the weather gate. What is the difference between the two outlets?

In the first four out of the space station stage, the astronauts are out of the node compartment of the core compartment of the space station. In the fifth out of the cabin event, the Shenzhou 14th multiplier group came out of the cabin from the weather gate for the first time. Compared with the node compartment, the air gate of the Tiangtian experimental cabin does not need to take into account the function of the connection to the aircraft, so its internal is relatively flat, which is enough for two astronauts to wear the space uniforms in the cabin. Essence

Pan Shunliang, deputy chief chief of the General Design Department of the Fifth Hospital of Aerospace Science and Technology Group: Ask the air gate of the Cabin Cryle, it is a relatively large outlet, which is also convenient for people to go out, and it is also convenient to bring some items out. When the astronaut opened the air gate's air gate, I saw a beautiful earth. In this case, the space staff's sense of space is better. At the same time, because the sun is on top, the entire strong light can be avoided, which is more suitable for astronauts.

In addition to allowing astronauts to get a better outlet experience, the use of the outlet of the weather gate can also improve the overall safety of the space station.

Pan Shunliang, deputy chief chief of the General Design Department of the Fifth Hospital of Aerospace Science and Technology Group: The node compartment of the core compartment belongs to the center position. If it is used as an air gate, it will take several other cabins, including (carrier) (flying) ships. Open, in this case, it is not actually the best state. If the air gate is separated from the working cabin, it actually has no effect on the core compartment and the Shenzhou spacecraft. At the same time, I asked Tian's outlet and mouth to be far away from the core working area, and it was actually a relatively safer outlet.

In the future, the astronauts in the orbit will from asking the weather gates out of the cabin.

Reporter visits the space station assembly integration test test

Ground simulation space environment guarantee spacecraft runs on orbit

Ensure that the astronauts are smooth out of the cabin and the space station is running smoothly. Before launching, it is necessary to simulate the sky and the core compartment of the space environment on the ground, and ask the Tianjin experimental cabin. So how to simulate the space environment on the ground? Let's take a look together.

The reporter Sun Qiang: The temperature difference between the space is large, and it is still a vacuum environment, but before the launch of our space station, you need to complete the tests of various simulated space environments on the ground. This is actually related to the large space environment simulator I am now. Before the launch of the experimental cabin was launched, it took almost a month of space simulation testing here, and in order to be able to completely put the comprehensive experimental compartment in the aspect of 17.9 meters in the simulator, the simulator was large enough. The diameter of this simulator reached 17 meters, and the height reached 35 meters, which is equivalent to 10 floors high.

Each cabin section of the space station is not directly pulled to the launch site for launch. Instead, various simulation experiments must be performed first. The KM8 large space environment simulator located in the Tianjin base of the Fifth Academy of Aerospace. It is currently the third largest space environment simulation device in the world. The main function is to simulate environmental conditions such as vacuum, cold black, and solar radiation, and ensure that the spacecraft run normally under these conditions. If you find abnormalities, find out the reason, and then continue to optimize and improve until the finally passes through various indicators to smoothly leave the factory. Director of the Tianjin Base Management Committee of the Fifth Hospital of Aerospace Science and Technology Group: Every 90 minutes, the temperature of the space station will experience nearly 300 degrees of impact. How can it ensure that the environment is very comfortable? The main function of this experimental tank is to test the effect of the temperature and hot and cold change, what impact will it affect the spacecraft.

In addition to thermal testing, the Tianhe Core Card and Wentian Experimental Cels also conducted mechanical testing, noise testing, and leakage testing, which provided reliable guarantee for the smooth launch and safety of the spacecraft and safely.

Naxin, Director of the Tianjin Base Management Committee of Aerospace Science and Technology Group: The vibration platform in front of it, its horizontal thrust reaches 70 tons, and the vertical thrust is 140 tons. It is mainly the moment when the rocket is launched, its violent vibration has the effect of the spacecraft itself.

Source: CCTV News Client

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