China News Service, Xi'an, November 24th (Reporter Tian Jin) On the 24th, China’s current Long March 5 rocket with the largest thrust successfully launched the Chang'e 5 lunar probe, which will start the first round trip of the moon to the moon after a lapse of 48 years. journey of.

In the long journey of more than 760,000 kilometers between the Earth and the Moon on Chang'e 5, the 107 large and small engines developed by the Sixth Research Institute of China Aerospace Science and Technology Corporation (hereinafter referred to as the "Sixth Academy of Aerospace") will continue to relay and boost the "Long Five" escort. "Wang Wu" returned home after exploring the moon.

  From the 30 engines on the Long March 5 Yao-5 rocket to the 77 engines on the Chang'e-5 probe, the full range of engines developed by the Sixth Academy of Aerospace Engineering have pushed the Long March 5 rocket into the predetermined orbit in continuous relay, boosting Chang'e The No. 5 probe realized the difficult movements of flying to the moon one by one, and finally completed the mission of "picking the moon" and returning to the space of Chang'e-5.

  The Long March 5 carrier rocket that launched the Chang'e-5 probe is equipped with 30 rocket engines developed by the Sixth Academy of Aerospace Engineering.

Among them, 8 120-ton liquid oxygen kerosene engines, 2 50-ton hydrogen-oxygen engines and 2 9-ton hydrogen-oxygen engines, all of which are China's new generation of green and environmentally friendly engines.

There is also a well-built auxiliary power system, which consists of 18 attitude control engines with different performances and supporting cylinders, valves, pipelines and storage tanks.

It is the only independent and complete power system in China that covers pressurized gas device, conveying system, propellant storage device and thrust chamber.

  The Chang'e-5 probe is composed of four vehicles, including lander, ascender, orbiter, and returner. The Sixth Aerospace Academy has developed three propulsion systems for the orbiter, ascender, and lander. China currently has the most complex propulsion system for space vehicles.

  The three propulsion subsystems used for the landing and return of Chang'e 5 consist of 77 orbital attitude control engines of different sizes and performances.

In order to ensure that the Chang'e-5 probe can land on the moon smoothly and return to the earth from the moon, the Sixth Aerospace Academy has tailored two 3 new engines for the probe, known as the "artifact" of Chang'e-5's return to the moon. .

Two of the 3000N engines will respectively provide power for the orbiter and ascender of the Chang'e-5 probe.

A 3000N engine on the orbiter provides thrust for earth-moon transfer, midway correction of lunar-earth transfer, near-moon braking, and acceleration from the moon. Another 3000N engine on the ascender will provide thrust for lunar takeoff, which is equivalent A miniature version of the launch vehicle on the moon.

A 7500N variable thrust engine will complete the lunar soft landing mission of the probe landing complex.