Staring at the moon, standing around the world, singing the wind.
(Tianjin Cuiting Garden 202 1.06. 17)
Shenzhou XII manned spacecraft was launched from Jiuquan Satellite Launch Center on June/July, 200212002. A few hours after flying in space, the Shenzhou-12 manned spacecraft will rendezvous and dock with the Tianhe core module of China Space Station and the Tianzhou-2 cargo spacecraft assembly, and then three astronauts, including Nie Haisheng, Liu Boming and Tang Hongbo, will enter the space station assembly in turn to start a three-month sky trip.
China is the third country in the world to independently master rendezvous and docking technology after the United States and Russia. Rendezvous and docking is a technology for two spacecraft (spacecraft, space laboratory, space station, etc.) to rendezvous and dock. ) meet in space orbit and connect as a whole in structure. At present, in the International Space Station, the assembly of large-tonnage aircraft is mainly realized by docking mechanism. The process is like "building blocks in space", carrying one aircraft to the sky, then carrying another, building together in space and gradually expanding. Only by breaking through the docking can the space station be built, materials be transported and docked, and people can travel back and forth between heaven and earth.
This is the 19 mission since the implementation of China's manned spaceflight project, and it is also the first manned mission in the space station phase. After the spacecraft is in orbit, it will rendezvous and dock with the Tianhe core module independently and quickly according to the predetermined procedure. During the flight of the assembly, astronauts will stay in the Tianhe core cabin for three months, carry out activities such as manipulator operation and space outing, and verify a series of key technologies such as long-term on-orbit stay and regenerative life support. At present, the combination of Tianhe core module and Tianzhou-2 has entered the docking orbit and is in good condition, meeting the mission requirements of rendezvous and docking with Shenzhou-12 and the conditions for astronauts to enter.