On October 31, the Mengtian experimental module was lifted into the sky by the Yao-4 Long March 5B rocket. As the “nerve center” of the Wenchang space launch site, the rocket control system team contributed greatly.
Promotional card for the space station construction mission at the Wenchang launch site
The “Zero Window” ignition cannot tolerate the slightest error
The rocket control system is known as the rocket’s “nerve center” and its main function is to control the rocket to fly according to the predetermined trajectory and accurately enter orbit. The control system team is responsible for testing and launching the rocket’s tools and equipment. The fact that the performance and parameter status of these instruments and equipment are normal will directly affect the success or failure of the rocket’s flight.
Yu Peng, the head of the control system, told the reporter: “The dream cabin and the main cabin can achieve accurate docking under high-speed moving conditions, and the ignition time error should be checked within 1 second. , which is a problem for our pre-ignition control system. To meet extremely high requirements, all testing operations must be fast and accurate and no errors can be tolerated. “
In order to ensure that the “zero window” turns on, Yin Jingbo, the commander of the Mengtian capsule mission control system, led the team to repeatedly refine the pre-launch process: the nodes and every operation are precise and precise.
Yin Jingbo and Yu Peng discuss problems in the rehearsal room
Theory and practice must be closely integrated. Multiple exercise cycles of the pre-launch process have enabled after-sales staff to master the timing of each password issue and the content of each operation, ensuring that staff can quickly interpret and provide feedback on over 400 states and over 2,000 parameters .
The “golden finger” Liu Jinjie observed and recorded the test parameters
What if there is an accident? For the deduction of possible failures, they established more than 190 possible failure modes and formulated more than 410 disposal measures, all aimed at ensuring that the rocket can be ignited in time.
Ten years of walking forward with a heavy load, just to shock the world
One minute on stage, ten years off stage. This ten-year basis was gradually built up by this team.
At the beginning of the construction of the Wenchang launch site, the control system was in the condition of “one poverty and two whites” in the construction of the software conditions. He learned the theoretical knowledge of the control system once, he learned the theory of the new signal The rocket technology again and again, and the debugging and installation of the equipment again and again. The spirit of hard struggle, with nearly a million words of operational procedures and supporting teaching material, laid the foundation for the control system.
During the 908 days of transporting the cargo, the control system team quickly packed up and left. Professional lecture rounds, perfecting documents again and again, deductions and drills again and again, self-designed circuit sand table, connector operation box, practical theory, hands-on operation, hands-on coordination, focus on foolproof preparation and use accumulation skills to win the turnaround. , the battle of honor, even if the three long distance tasks are pushed again and again, it is difficult to stop their passion.
Control system personnel use the circuit sand table for on-site teaching
In the Spring Festival of 2020 the new corona epidemic rages and spreads, almost half of the staff cannot return to their positions as planned, the first two arrow missions are parallel and unfavorable factors such as the unexplained panic caused by the epidemic are placed in front of the control system.
Yin Jingbo, the commander of the control system, recalled: “At that time, the ‘Golden Finger’ which served as the first flight mission of the Long March 5B and also the arrow operator of the Long March 7A, had just finished work on one side, and quickly moved to the other side for testing. The technical status of the sending activities is different, our system “thinks two” and the preparations for the tests are delayed every night to ensure that preparations for the tests are more adequate during the day, and it’s almost a continuous rotation of ‘black and white’. “
Long March 7 Jiaxing Arrow combination transition scene slogan in March 2020
Liao Guorui, commander 01 of the Mengtian capsule launch mission, told reporters: “At that time I was in charge of the control system. I was moved by the hard work of the staff and was impressed by the professionalism of many people who were thrilling on the pole for nearly 90 days. Impressed. “
Mobilization of the Tianhe main module mission control system
Fighting the epidemic and walking to the sky was the firm belief and concerted action of the control system team at the time. Through this process of overcoming the difficulties, the overall measurement and development capabilities of the control system team have been greatly enhanced, laying a solid foundation for consecutive wins in follow-up activities.
The road is long and long, but perseverance will come
Difficulties show courage and perseverance, and hard work leads to success.
In 2021, after the Tianzhou-2 mission was suspended twice, the propellant was discharged and refilled twice. All the scientific and technical personnel of the measurement and development team shouted the battle cry of “do everything for the mission, and never go back for the mission “. A mission relay that runs against time and competes with problems.
The control system personnel always stayed awake, kept focus, stabilized minds, stabilized positions, collaborated with various systems to help each other overcome difficulties together, and ultimately wrote a new miracle of the aerospace successfully.
Zhang Bo, commander of the Tianzhou-2 control system
The high-density mission of 2022 will pass time quickly and, after the successful launch of the “Wentian” capsule, will be included in the “Zhongxing”, “Mengtian” and “Tianzhou-5” three-engine missions in parallel for 90 days. team has never experienced this “ultra high density” and the severe epidemic situation in Hainan, the negative effects of staff exhaustion and static management and control, will test them again.
The control system team deeply understands the “significant and extraordinary mission” of the space station construction task, maintains “steadfast and constant” determination, establishes faith in victory, and is determined to dare to fight, overcome the pressure of the continuous high. – Density of tasks and overcoming the impact of static control Fighting and fighting under pressure have fully demonstrated the excellent style of “responsibility before the war”.
Control system technicians participated in the transition activity of the Mengtian experimental cabin
The control system personnel voluntarily gave up taking holidays to accompany his wife and children, staying on site for nearly 30 days, working overtime, in order to grasp the status of the test and the process more accurately.
Sun Jing, the head of the servomechanism responsible for the two rockets, was breastfeeding and took young children to care for them, only to put more energy into the task.
Dou Tianheng, who is also a canopy, Hao Jianjun, who has postponed his marriage, Wang Puhua’s family who has two children alone … and so on.
The staff on the control system arrow checks the status of the test
Although ordinary and unknown, their careers are fantastic.
Although she is hard and sleepy at night, they are happy.
Although it was difficult, they advanced with a heavy load, but lifted it slightly.
It’s all because the beliefs of “strengthening the country in space” and “serving the country in space” have long been embedded in the blood and constitute the “winning geniuses” who are struggling to build a world-class space launch site and a space power. (Huang Guochang, Ni Jiankang, Zhang Zuotong, Xu Binru, Tang Yang)
(The manuscript is jointly planned by Xinhuanet and Wenchang Space Launch Site)
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责编：张璋 ]
