China liquid oxygen kerosene engine achieves repeated flight test verification for the first time

According to the official public account of Xi'an Aerospace Power Research Institute, recently, a certain type of liquid oxygen kerosene engine independently developed by Xi'an Aerospace Power Research Institute achieved repeated flight test verification for the first time. After this type of engine participated in the first flight test as the main power unit of an aircraft, after inspection and maintenance, it was reassembled and successfully completed the repeated flight test. It was the first time in China realized the repeated use of liquid rocket power.


As the main power device of space vehicles, a liquid rocket engine has full functions, high performance, great technical difficulty, and a long development cycle. The reusable technology of liquid rocket engines is very important for reusable space vehicles.


The liquid oxygen kerosene engine is the main power unit of my country's new generation of launch vehicles, with the advantages of high performance, large thrust, non-toxic and non-polluting. From the beginning of the design of the engine, the sub-component scheme and overall layout have been demonstrated according to the requirements of multiple jobs. All valves are pneumatic, electric, hydraulic, and other working forms that can work multiple times. The ground development test has achieved a single engine. Step off the stage and repeat the test drive 8 times.

During the "Thirteenth Five-Year Plan" period, our institute has carried out research on key technologies for the reuse of liquid oxygen kerosene engines in advance, and obtained a large number of theoretical and experimental research results, laying a foundation for the reuse of liquid oxygen kerosene engines.


Due to the differences in the working environment of heaven and earth and the limitation of various guarantee conditions, the repeated ignition of the liquid oxygen kerosene engine in flight and the repeated ignition of the ground test cannot be simply equated, and the environmental conditions such as flight force and heat are also worse, so the repeated ignition of the liquid oxygen kerosene engine There are more key technical problems that need to be overcome, mainly in the following aspects: multiple ignition technology, large-scale variable thrust technology, force, thermal protection technology, reused state assessment technology, and reused detection and maintenance technology.


Zhang Xiaojun, director of Xi'an Aerospace Power Research Institute, said: "my country's liquid oxygen and kerosene engine successfully flew for the first time, marking that the engine reuse technology has entered the actual combat stage. We will pay more attention to the high reliability, low cost, and high efficiency of the engine. performance, continue to carry out the exploration of reusable technology, and provide a strong power guarantee for my country's rapid and large-scale entry and exit of space."

1 view0 comments

Recent Posts

See All