New expansion pump group, third -generation partial terminal ... Shenzhou 14 Aerospace officer multiplication group's second out of the compartment task to scan

Xinhua News Agency, Beijing, September 17th: New expansion pump group, the third generation of the terminal ... Shenzhou 14 Aerospace officer multiplication group's second out of the mission to scan

Xinhua News Agency reporters Hu Yan and Song Chen

On September 17, Chen Dong, Liu Yang, and Cai Xuzhe, Shenzhou 14, closely collaborated to complete all the setting tasks of the second -time outlet event, and the outlet event achieved a complete success.

During the space officer's outlet event, the task of helping the handle installation, the load load expansion pump group installation, and the rescue verification verification of off the cabin were completed during the outlet event of the space offices. The functional performance of supporting devices related to the air gates and outlet activities.

Among them, the most noticeable is that the astronauts installed a set of extended pump groups developed by the Fifth Hospital of Aerospace Technology Group in order to ask the Sky Experimental Cels. Unlike the first -time outlet installation of the astronauts, it is different. This time, an extension pump set was installed in the outer load cooling circuit of the Sky Experimental Class.

Why install the expansion pump group outside the test compartment? This is because the task of the space station is more than 15 years long. As a key component of the cooling circuit, pumps, valves, filters, sensors, etc. need to be replaced on the orbit. The liquid road equipment must be installed in the cabin to be in the rectification cover, rather than the sealing cabin full of equipment and pipeline cables. The difficulty can be imagined.

To this end, the thermal control designer of the Fifth Hospital of Aerospace Science and Technology Group boldly innovated and put forward new ideas: install a pump valve in the cabin to support the early operation of the circuit, and then leave the electrical liquid interface on the outside of the cabin. , Choose an opportunity to add a set of pump groups outside the cabin, the so -called out -of -the -cabin extension pump group.

After the expansion pump group is installed, the expansion compartment will give priority to the expansion pump group. After the failure or life expires, the pump group will be replaced. The pump group in the cabin is used as a backup to ensure that the space stands on the orbit stable operation.

Although in the space environment, no matter how heavy the boxes are fluttering, the astronauts wearing a space suit came out of the cabin to operate a large box and connected the electrical solution with the cabin, which was still difficult. Especially the liquid road connection, the spring force and liquid pressure in the aggressor are not small, the outlet activities itself is not convenient, and the astronauts cannot be directly inserted by their own strength alone.

The designers of the Fifth Hospital of Aerospace Science and Technology Group carried out a large number of experiments to verify, and continuously improved the product design. When installing the expansion pump group, the astronauts did not need to use any tools, nor need to be aimed or shifted left and right. Positioning, locking hook locks, plug -in shifts, pulling the handle and liquid ", except for the time of confirmation of the ground personnel, you can successfully complete this difficult task in less than a minute, which saves time and effort.

After the space is out of the cabin, the astronauts will face the severe test of the space environment and cannot tolerate the error. Therefore, it is particularly important to establish high -speed and timely measurement and control communication with the ground during the outlet activities.

To ensure the real -time unblocking of the astronauts and ground measurement and control communication, it is necessary to rely on the third -generation trunk terminal product developed by the Fifth Hospital of Aerospace Science and Technology Group to ask the Tiantian Experimental Crystal. It establishes a middle relay link with relay satellite Tianchain No. 1 and Tianchain No. 2 to achieve a relay communication. This is like setting up the "Tianlu" between ground and relay satellites, relay satellites and astronauts in space, which plays an important role in ensuring the continuous communication between ground and astronauts.

After the completion of the Tianjin test control communication system established through the truncer terminal, it can be ensured that the Tiangan experimental cabin maintains real -time communication with the ground in most of the time.

Yu Xiaochuan, the person in charge of the Xi'an Branch of the Fifth Hospital of Aerospace Science and Technology Group, introduced that the original ground surveying and control station of the manned aerospace engineering, the measurement and control stations of the maritime measurement and control station were small. Always keep communication.

In addition, during the construction stage of the space station, astronauts will go out of the cabin and carry out off -class maintenance, equipment replacement and other operations will become a normal activity. The partial terminal of the space station asked the trials of the experimental cabin adopts integrated and modular design ideas. While ensuring the quality of the transmission signal, it is convenient for astronaut maintenance and replacement.

【Edit: Wang Yu】

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