For the first time in China to achieve liquid rocket dynamics reuse use

Recently, a type of liquid oxygen and oil engine independently developed by the Xi'an Aerospace Power Research Institute of the Sixth Hospital of Aerospace Science and Technology Group achieved repeated flight test verification, and for the first time in China, the liquid rocket power was reused. This type of engine participated in the first flight test as a aircraft active power device in 2021. After testing and maintenance, it participated in this repeated flight test task.

"my country's liquid oxygen and oil engine is successful for the first time, marking the engine application stage of the engine reuse technology. We will further pay more attention to the high reliability, low cost, and high performance of the engine. The scale and exit space space provides strong power protection. "Zhang Xiaojun, director of Xi'an Aerospace Power Research Institute of the Sixth Hospital of Aerospace Science and Technology Group, said.

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Freedom entry and exit space is the main direction of the subsequent development of the aerospace transportation system; development can be reusable for aerospace carrier is a key link to achieve free entry and exit space. It is urgent to carry out substantial research and achieve technological breakthroughs. In recent years, with the mature application of the Falcon 9 Rockets, countries have set off a new round of reused technology and new development boom.

The liquid rocket engine, as the main power device of aerospace carrier, has the characteristics of high performance, strong task adaptation, high technical difficulty, long development cycle, etc. It is also one of the most complex products of aerospace carrier. One of the key technologies that must be made in reuse must be made.

The liquid oxygen and oil engine is the main power device of my country's new generation of carrier rockets. It has the advantages of high performance, large thrust, non -toxic and pollution. From the beginning of the engine, the component scheme and overall layout were demonstrated according to the requirements of multiple work. The ground development test realized that the single engine did not go down and repeatedly tried 8 times.

However, repetitive ground testing does not mean that the engine can adapt to reuse. The liquid rocket engine can be reused and also requires breakthroughs in multiple starts, low entry pressure start, large -scale thrust adjustment, status assessment detection and health management, rapid simplification processing, high -temperature component structural anti -fatigue life assessment and longevity, full -task section complex power heat heat heat hot force heat hot force heat hot force heat hot force heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat hot force heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat heat hot heat Environmental forecasts and control and other key technologies. During the "Thirteenth Five -Year Plan" period, my country carried out key technical research on repeated use of liquid oxygen and oil engines, and achieved a large number of theoretical and experimental research results, laying the foundation for the reuse of liquid oxygen and oil engines.

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This type of liquid oxygen and oil engine has the functions of multiple starts, low -entry pressure, and large -scale thrust adjustment. It further verifies the feasibility of the complex power of the engine's full -task section of the engine, and the feasibility of reusing after flight. Explore the rapid simplifying the treatment scheme, detection and maintenance and health management solutions of liquid oxygen and oil engines, and initially established a liquid rocket engine for reuse of design evaluation standards, and promoted the development and engineering application of repeated use of aerospace transportation technology.

This small step is used from one flight to two flights from one flight to two flights. The liquid power can be repeatedly used to achieve a breakthrough from zero to some, taking a solid step.

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Dang Zou Gang Wang Fei Hongxing Journalist Ren Jiangbo

Editor Deng Yiguang Editor Wang He

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