Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizen grass Luo Yuzi for the clue delivery! CTOnews.com, September 13, according to official account, Xi'an Aerospace Power Research Institute, recently, a liquid oxygen kerosene engine independently developed by Xi'an Aerospace Power Research Institute has achieved repeated flight test verification for the first time. After taking part in the first flight test as the main power plant of an aircraft, the engine was tested and maintained, assembled again and completed the repeated flight test successfully, and the liquid rocket power was reused for the first time in China.

As the main power plant of space launch vehicle, liquid rocket engine has the advantages of complete function, high performance, high technical difficulty and long development cycle. The reusable technology of liquid rocket engine is very important for reusable space launch vehicle.

Liquid oxygen kerosene engine is the main power plant of the new generation carrier rocket in China, which has the advantages of high performance, high thrust, non-toxic and non-pollution. From the beginning of the design, the assembly scheme and overall layout of the engine were demonstrated according to the requirements of many times of work, and all the valves were pneumatic, electric, hydraulic and other working forms that can be worked many times. The ground development test has realized that a single engine can be tested for 8 times without stepping off the stage.

During the 13th five-year Plan period, our institute carried out the research on the key technology of the reuse of liquid oxygen kerosene engine in advance, and achieved a large number of theoretical and experimental research results, which laid the foundation for the reuse of liquid oxygen kerosene engine.

Due to the difference between the working environment of heaven and earth and the limitation of various guarantee conditions, the repeated ignition of liquid oxygen kerosene engine can not be simply equated with the repeated ignition of ground test, and the environmental conditions such as flying force and heat are even worse. therefore, there are more key technical problems to be overcome in the repeated use of liquid oxygen kerosene engines. There are mainly the following aspects: multiple ignition technology, large-scale variable thrust technology, force, thermal protection technology, reuse status assessment technology, reuse detection and maintenance technology.

CTOnews.com learned that Zhang Xiaojun, director of Xi'an Aerospace Power Research, said: "the success of China's liquid oxygen kerosene engine for the first time indicates that the engine reuse technology has entered the actual combat stage. We will further pay attention to the engine's high reliability, low cost, and high performance, and continue to carry out reusable technology exploration, so as to provide a strong power guarantee for China to enter and leave space on a large scale."

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