Long March 7 changed the shipping rocket to achieve a new breakthrough

The launch preparation time further shortens the Long March VII to the Rocket Rockets to achieve a new breakthrough

At 21:18 on September 13th, my country used the Long March VII Rockets at the Wenchang Aerospace launcher to successfully launch the "Zhongxing 1E" satellite. The satellite enters the scheduled track smoothly, and the launch task has been successfully successful. Xinhua News Agency (Photo by Tuhai Super)

Xinhua News Agency, Beijing, September 13th. Question: The preparation time for launch is further shortened to the Long March VII.

Xinhua News Agency reporters Hu Yan and Song Chen

On the evening of September 13th, the Long March VII Rockets developed by the China Locomotive Rocket Technology Research Institute, which belongs to China Aerospace Technology Group Co., Ltd., ignited at the Wenchang Aerospace launcher and successfully sent the "Zhongxing 1E" satellite into the scheduled The track, the launch task is successful. The satellite is mainly used to provide users with high -quality voice, data, radio and television transmission services.

Long March 7 changed the carrier rocket is the main structure of my country's new generation of medium -sized carrier rockets. It is based on the three -level liquid of the Long March 7 Lae -Lead Rockets and Long March 3rd -in Rockets. Binding -type carrier rocket, the landing capacity of the Earth synchronous transfer rails is not less than 7 tons, filling the gap of 5.5 to 7 tons of carrier -cards of the Lange Rocket Earth Synchronous Transfer Rockets in my country. One arrow, one star and one arrow double master star launch ability.

Wei Yuanming, the director of the Long March 7, the director of the Rockets, introduced that the Long March VII of the Mission of this execution task was changed to the rocket with a rectification diameter of 4.2 meters. The Long March VII is highly consistent with the long -term carrier rocket.

The Long March 7 changed the rocket as the first type of binding rocket using a booster and a first -class beam separation technology in my country. Compared with the generally separated assistant and then separated the core level, it reduced the separation link and made it to make it to make it to make it to make it to make it to make it to make the separation link, so that the separation link is made. The rocket bundle link structure is more simplified. At the same time, the beam separation also reduces a helper landing area. The entire combination is in a landing area, which is more conducive to controlling the rocket wreckage landing area.

At present, the state of the Long March 7 is gradually solidifying, and at the same time, it is prepared to enter the high -density launch stage in advance. Wei Yuanming introduced that the model team has conducted a number of optimization improvements on rocket technology design. Under the premise of ensuring test coverage, the launch technology process has been reduced from 32 days to 26 days by optimizing the process order, parallel work, and combined testing.

"In the past, the team members needed to wait for all parts to prepare, and then complete the vertical assembly to complete the vertical assembly. The equipment and the first and second -level preparations are long. "Wei Yuanming said.

Wei Yuanming introduced that during this task, the team further improved the total assembly mode, optimized the total assembly time, first lifted the booster and the first and second level, and in the process of waiting for the core III, the booming and the core second -level servo institution Installation work, wait for the three levels to have conditions before lifting. 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 mode.

The supplementary pressure test is the last test of the system dynamic system test, followed by the first general inspection test. 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, according to the overall development of high -track satellites and the urgent demand for high -orbital satellites configured large -sized antennas, the Long March 7 will change the new configuration of 5.2 meters rectification in the future to further improve the rocket task adaptability.

Source: Xinhuanet

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