China News Service, Xi'an, May 30 (Reporter Zhang Yichen) "In addition to transporting materials, the Tianzhou-2 cargo spacecraft also needs to realize propellant replenishment after rendezvous and docking with the Tianhe core module, which is the so-called'space refueling'." Gu Shuaihua, director of the Manned Aerospace Propulsion System Department of the Sixth Academy of China Aerospace Science and Technology Corporation (hereinafter referred to as the Sixth Academy of Aerospace), said.

  At about 20:50 on May 29, Beijing time, China launched the Tianzhou-2 cargo spacecraft with the Long March 7 Yaosan rocket at the Wenchang Space Launch Site.

Subsequently, the Tianzhou-2 cargo spacecraft successfully completed the orbital status setting after entering orbit. At 5:01 on May 30, it used the autonomous rapid rendezvous and docking mode to accurately dock to the rear port of the Tianhe core compartment. The entire process lasted about 8 hours. hour.

At about 20:50 on May 29, China launched the Tianzhou-2 cargo spacecraft with the Long March 7 Yaosan rocket at the Wenchang Space Launch Site.

Photo courtesy of the Sixth Academy of Aerospace Engineering

  It is understood that the Sixth Academy of Aerospace provided 6 120-ton high-thrust engines and 4 liquid oxygen kerosene engines for the Long March 7 rocket. 10 engines continued to generate power and successfully delivered the Tianzhou-2 carrying cargo. The orbit for rendezvous and docking with the core module.

  The airtight cabin of the Tianzhou-2 cargo spacecraft carried about 4.69 tons of upward cargo, 1.95 tons of propellant, and nearly 6.64 tons of materials.

Faced with such a large carrying capacity, the R&D team of the Sixth Academy of China Aerospace has made adaptive improvements to the technical state of the engine and achieved better working performance. All technical indicators fully meet the new mission requirements of the Tianzhou-2 cargo spacecraft.

  Different from Tianzhou-1, the "Sky" Tianzhou-2 can realize the forward and backward two-way supplement function with the core cabin, so that in case of failure, one end can work normally to ensure the mission of the space station. normal operation.

  The space propulsion system development team of the 801 Institute of the Sixth Academy of China Aerospace is responsible for the design and development of all core module propulsion and supplementary systems.

In the future, the space propulsion system developed by the team will provide full support for the Tiangong Space Station to carry out a series of space scientific experiments and research.

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