Long March 5 B Rockets successfully launched: the process is better, the load quality is greater, there are nearly a thousand plans

【Source: Nine Pai News】

On July 24th, at the Wenchang Launch Center in Hainan, the Long March 5 Liren Rockets (referred to as the "Long -B Rockets") developed by the China Laun -ress Lane Rocket Technology Research Institute (referred to as "Aerial Aerospace Technology Group") Send the space station to the testers into the scheduled track, and the launch has achieved a complete success.

The China Space Station consists of a core compartment and two experimental cabins. The launch tasks of the three cabins are performed by the long five -B rocket. The significance of 3 launch is heavy, the quality of the load is heavy, and the task on the players should be heavy. These three "heavy" should be successful with the task.

【1】 Rocket launch "dual insurance"

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 is lost, the experimental players launched "dual insurance" for the Rockets. 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 test 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 Five B Rocket Control System of Aerospace Science and Technology Group 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 at 2 minutes and 30 seconds can be accurately completed through the late track correction and the connection. "

Earlier, the control system designers conducted multiple rounds of tests and simulation tests for this task to ensure that the control control unification can accurately complete the track correction.

Liu Bing, the overall deputy director of the long -five B rocket, introduced: "The five series of rocket systems are complex, and there are many types of processes in the launch site. 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. "

[2] The "Hero" of the 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 possible for our 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. Serving the ground.

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. "

[3] Test personnel coexist with pressure and motivation

"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 relatives, but the test 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 Yaoji, they immediately devoted themselves to the restoration and repair of ground equipment.

Equipment detection, technical state changes, product repairs, component replacement, software update, status recovery, system testing matching ... Faced with heavy and complicated work, team members accumulated over 8 months, busy until the Spring Festival 2022 until the Spring Festival in 2022 Essence

In order to meet the needs of the launch of the long five -b -long three and far 40 windows, the launch support system team also aims at the actions of hundreds of equipment that enters the launch process. From risk risk recognition, detailed analysis and verification, the product reliability will be further improved. It has laid a solid foundation for the successful launch tasks for long -lasting five -B Yao San, Yao Si, and 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 successful launch of the long five -B Darma, although the frequency of the long -five rocket launches slowly, everyone of the development team is like the ground like the ground. Like the equipment of the equipment, the footsteps did not stop for a moment. 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 way to maintain success. In addition to the technical improvement and process optimization of the "zero window" launch, the test 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 injecting Exhaust the analysis of restarting. "

Nearly a thousand plans are the efforts of the entire research team to protect the success, and it also makes everyone more confident in the success of the launch.

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 test players can be imagined. But they did not ignore the outside disturbances of the outside world, and transformed the pressure into a motivation for each success. In order to launch better for the next successful launch; looking up at the starry sky, they want to see the successful flying sky of the Rockets. With the successful launch, the five -B rocket test team temporarily unloaded the joy of cheering and hugging.

But as they said, each time they were successfully launched, they could only be happy for two hours. The launch of the Mengtian experimental cabin was coming, carrying the new heavy responsibility on the shoulders, and they sailed again.

Jiupai journalist Xu Ming

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