Qing Meeta asked the sky | The most intensive sound on the road of dreaming

On July 24th, the Blue Sea Blue Sky, the Long March 5 Liren Rockets (referred to as the "Long -B Rocket") from the Rocket Academy (referred to as the "Long Five B Rockets") started in the air in Hainan Wenchang Launch Center. The launch has achieved a complete success. This allows us to build the Chinese space station further.

The China Space Station consists of a core compartment and two experimental cabins. The launch tasks of these three cabins are performed by the long five -B rocket. The road of dreaming is long. The three launching is heavy, the quality of the load is heavy, and the task of the players' shoulders is heavy. These three most "heavy" sounds perform a successful symphony.

The construction of the important space station cannot be lost

The 11 launch tasks in the construction phase of the Chinese Space Station are intertwined and significant, and no loss at any time. As the "special column" of the Chinese space station cabin section, the long -five B rockets have taken the launch task of 3 cabins. This time it is the first time that the matching task of meeting is performed. In order to ensure that everything was lost, the launch team successfully launched the "dual insurance" for the rocket.

The long five -B rocket is the first large -scale low -temperature rocket launched in my country to implement the "zero window". Although it already has the "zero window" launch ability, the launch player still expands the launch window to 2 minutes and 30 points with the "take -off time correction technology". second.

Su Lei, director of the Rocket Dean Five B Rocket Control System, introduced: "The" take -off time correction technology 'allows the rocket control system to automatically calculate the deviation and adjust the target track. The launch of this window time can be corrected by the later track to accurately complete the orbit and the connection. "Previously, the control system designer conducted multiple rounds of tests and simulation tests for this task to ensure that the control system could accurately complete the track accurately completing the track. Amend.

The second "insurance" is the optimization of the project process. Liu Bing, the overall deputy chief director of the Long B Rockets, introduced: "The five series of rocket systems are complex, and there are many types of processes in the launch field. We summarize the experience of the first 7 launch and optimize the launch process of 10 minutes before the shooting. Some processes are before, and the preparations before the launch are completed at 2.5 minutes from the ignition. The work is done before, if there is a problem, you can find it early and solve it early. "

The "Higher" of the most important Long March Rocket Family

As the "Hercules" in the Long March Rockets, the long five -B Rockets have increased the carrier capacity of the Rockets near the land of the Rockets from 8 tons to 25 tons. It is not only brute force. The "big thrust directly entered track accuracy control technology" and 20.5 -meter -high rectification unique to the long -five B Rockets allow the space station to reach the scheduled track safely and comfortably.

"It's like a car that is driving at a high speed. It is difficult to stop to the designated position if you want to step on a brake." To this end, the rocket -controlling system and guidance system design team innovatively adopted two methods: "gesture control gain optimization" and "composite guidance" to ensure the high accuracy of the long five -B rocket tracking accuracy. The reliability of this method is verified.

This time the test compartment is the one with the largest weight and the largest package size in my country so far. However, this is not a long -five B rocket. In addition to the oversized thrust, the development team considers the task needs of the space station at the beginning of the design. Essence

Wang Qian, the overall designer of the Rocket Structure, introduced: "For this task, in the early stage of the production of the rectifier, the development team used three -dimensional visual scanning and other technologies to accurately simulate the size of the rectifier and the size of the experimental cabin. , Confirmed the safety gap of the key position, and ensure that during the flight and separation process, the experimental cabin enjoys sufficient space and will not be close to the rectifier during the flight. "

Mission major pressure and motivation coexist

"After watching most colleagues, you can pack your luggage and go home after completing the task. It is not envious that it is false. Everyone wants to go home quickly to reunite with loved ones, but the launch team responsible for the ground equipment and the recovery task after shooting are on the body. You can't return to Beijing with the large army. The busyness and hard work at the time of recovery are for the next successful launch to lay the foundation. "He Jianhua, deputy chief designer of the long five B Rockets.

As early as the launch mission of the long five -B Yao Rockets, the launch support system team launched the recovery and medium repair work planning of the launching table and ground equipment, formulated a detailed medium repair plan and equipment medium repair technical solution, and carried out product production and production and carried out product production and equipment. Material procurement. After the successful launch of the long five -B Yao two rockets, they immediately put in the ground equipment recovery and repair work.

Equipment detection, technical state changes, product repairs, component replacement, software update, status recovery, system debugging matchmaking ... Faced with heavy and complex work, team members went all out to invest, accumulated for 8 months, busy, busy, busy, busy, busy Busy until the Spring Festival in 2022.

In order to meet the demand of the launch of the "zero window" launch of the long five -b -long three and the far four rockets, the launch support system team also aims at the actions of hundreds of equipment that enters the launch process. The further improvement of sex has laid a solid foundation for the success of the long five -b -long three, the far four rockets, and the subsequent launch tasks. With the successful launch of the long five -long three rockets, the updated ground equipment has also undergone the test.

After less than a year and a half of the high -density launch of the "Five Battle and Five Portts", since the launch of the long five -long two rockets has been successfully launched, although the frequency of the long -lasting rocket launches slowly, everyone who developed the team is like it is like Like the launching players of the ground equipment, they did not stop. Lights in the late -night office, keyboards that are commonly used with keys, vehicles that run back and forth between Beijing and Tianjin ... all recorded the sweat they paid for success, and also paved the road of high quality to ensure success. In addition to the technical improvement and process optimization of the "zero window" launch, the launch team also added 4 new and 18 plans based on the task. Liu Bing said: "In order to adapt to the characteristics of the fast meeting and docking task window, we further refined and improved the pushing agent leaked the re -organizing launch plan. Just like this time we wrote the liquid hydrogen in charge The analysis of delayed restart. "Nearly a thousand plans are the efforts of the entire development team to protect the success, and it also makes everyone more confident in the success of the launch.

Success is not an overnight, and the improvement of product reliability is a continuous process. In the past year, the model team has not only analyzed the launch data of the long five -b -long rocket, but also continuously improved the reliability of the long five -b -long three rockets in accordance with the established plan, and further improved the process and production process and the production process. Essence Regardless of the plan for a single task or a continuous reliability improvement, the pace of the development team has never stopped.

Due to the undertaking a series of major launch tasks, the long -five series of rockets have attracted much attention every time, and the pressure of the launching team members can be imagined. But they did not ignore the outside disturbances of the outside world, and transformed the pressure into a motivation to ensure success every time. In order to launch better for the next successful launch; looking up at the starry sky, they wanted to see the rocket successfully flying.

With the successful success of this launch task, the five -B rocket launch team members temporarily removed the burden, cheered, and embraced the joy after success. But as they said, each time they were successfully launched, they could only be happy for up to two hours. The launch of the Mengtian experimental cabin was coming, and the new heavy responsibility had been carried on the shoulders, and they sailed again.

("Aerospace Long March" Shangchi text/ correspondent Tu Haichao better than Xiang Shi Xiao Gao Wenhao)

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