From 32 to 26, how does the long seven -A rocket do?

It sounds not long in 6 days, but for the rocket launch, each job is against time, and every day of the test cycle decreases, the improvement efficiency of the rocket launch is a big step forward. The Long March 7 Yaozhuo Rockets (hereinafter referred to as the "Long Seven A Rockets"), which is developed by China Lauding Rocket Technology Research Institute (hereinafter referred to as the "Rocket Institute"), is optimized. The hair cycle has been reduced from 32 days to 26 days, which has further improved rocket launch efficiency, laying the foundation for rockets to respond to high -density normal launch.

Follow the decoration time with the hanging of 3 days

As soon as the rocket is in the lift core, the bundle the weapon, the core is the second level ... As soon as the rocket enters the field, the test team players are so busy that everyone is erected the rocket lying horizontally for the total installation. During the vertical assembly and unit testing phase, the test team shortened the assembly time by 3 days by improving the assembly mode.

According to Wei Yuanming, the chief designer of the long -seven A rocket, as a full -low -temperature rocket, the long -seven A rocket is currently the new generation of rockets with the largest number of modules in my country. There are many parts and complicated parts. In the past, the team members had to wait for all parts to prepare together, and to complete vertical assembly. However, a number of tasks such as the installation of fireworks, 氦 漏, and nozzle extension section installation must be completed first, which is longer than the tools and first -second preparation time. For this reason, in this task, the team changed the assembly mode from "in one go" to "to follow the hanging" to optimize the assembly time.

"Now, let's hang the booster and first -two levels. In the process of waiting for the core III, we will be installed in the installation of the booster and the core two -level servo mechanism. Coupled with the preparation of the preparation of the arrow installation system on the instrument and equipment, it is optimized for 1 day. After calculating, this stage can save 3 days than the previous model. "Wei Yuanming said.

Merge "similar item" to grab the test time for 2 days

After the assembly and unit testing, the rocket needs to perform system matching tests and general inspections to verify its technical performance and reliability to meet the requirements of the launch state. In this task, the team carried out a "similar item" with a similar state test to further shorten the testing time.

The supplementary pressure test is the last test of the system dynamic system test, followed by the first general inspection test. The general inspection test and supplementary pressure test will run the mold flight program. "If the two are merged, can they reduce part of the overall inspection test?" Thinking of this, the team members were bright, but the question also followed. "Can the same test effect after the merger?"

After research and analysis, the team found the differences in the existence of two tests, strengthened the verification of the measurement system in the supplementary pressure test, so that the test was more comprehensive and achieved less time to achieve the same test effect.

In addition, the team carried out the preparation work before the testing of the rocket control system and the measurement system, which was completed in advance and parallel, reducing the test cycle of the sub -system matching. "Through these measures, we saved a total of 2 days during the system matching testing and general inspection and testing stage." Wei Yuanming said.

Serial change in parallel transition and launch area saves 1 day

On the day of turning, in the red flag and the team that sent off, the long -seven A rocket stood on the event launch platform and slowly "walked" to the launch tower. This means that the Rockets can be launched after inspection and testing in the technical preparation area, but the footsteps of the team members have not stopped.

In the past launch, it took a total of 4 days to work from the transition and the work in the launch area. This team combing process has changed the recovery and testing of the measurement system from serial to parallel to parallel, which reduces the work of the transfer and the launch area to 3 days. It is the liquid rocket with the shortest position in the launch area.

"The serial change is not a fresh measure. The difficulty is how to determine how these processes can be achieved in parallel and are not disturbed during the work process." Wei Yuanming said, "This is our risk recognition, plan scheduling, and scheduling The on -site operation has made higher requirements. "

Carefully sort out the process before the launch, the "double -thinking" identification risk in advance, the scheduling will adjust the progress in time, and the specific work goals will be further determined before the assembly operation class ... reduce risk.

In addition, Wei Yuanming said: "As a new rocket, the previous task, the work arrangement has a relatively large amount. After experiencing the test of the previous tasks, we have a deeper understanding of various tasks and more proficient operation. Therefore Optimized coordination and adaptability also have stronger confidence and grasp. "

35 days, 32 days, and 26 days, the shortening of the test cycle shows the continuous optimization and excellent style of the long seven -A rocket, and also shows the spirit of the long -seven A rocket test team that is endless and perfect.

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Author: Correspondent Wang Bing Reporter Shen Zhushitu/Xiao Guojun Jiang Wenbo

Edit: Zhao Zhengnan

Editor in charge: Fan Bing

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