The hydrogen-oxygen engine of the Chang-5B rocket has been successfully tested and will be used for the launch of the experimental module of the Chinese space station

　　China News Agency, Beijing, March 22 (Ma Shuisha) According to the China Aerospace Science and Technology Corporation on the 22nd, on March 21, the calibration test of the last high-thrust hydrogen-oxygen engine of the Long March 5B Yao-4 carrier rocket was successful. It will be launched in the experimental module of the Chinese space station in 2022.

　　It is reported that the calibration test starts according to the predetermined procedure, the main stage works for 100 seconds, and shuts down according to the predetermined procedure. The test system works normally, the engine parameters are normal, and the function and performance of the high-thrust hydrogen-oxygen engine meet the overall technical requirements of the rocket. The rocket will be delivered to the final assembly this year. Carry out the launch mission of the space station experimental module.

　　This type of high-thrust hydrogen-oxygen engine is used in the core stage of the Long March 5 series of launch vehicles.

This year, the Long March 5 series of carrier rockets will carry out the launch missions of the Wentian experimental module and the Mengtian experimental module of the space station.

This type of hydrogen-oxygen engine works for about 500 seconds in the actual flight mission.

　　The purpose of calibration test (ie calibration test) is to obtain the relevant parameters of the "God" engine and to expose possible problems in advance.

To reduce the impact on engine life, set the calibration run time to 100 seconds.

　　In addition to the short-range calibration test of the engine that will be "going to the sky", the development team conducted a long-term test of more than 500 seconds for other engines of the same model to verify its performance and indicators from the side.

　　According to the task arrangement, in 2022, China will launch the Tianzhou-4 cargo spacecraft, the Shenzhou-14 manned spacecraft, the Wentian experimental module, the Mengtian experimental module, the Tianzhou-5 cargo spacecraft and the Shenzhou-15 manned spacecraft6. A spacecraft, complete the orbital construction of the space station, and build a national space laboratory that operates stably in orbit.

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