Photo by Wang Jiangbo, Beijing, November 29th (Ma Shuaisha, Li Yanming) On November 29th, the Long March 2F Yao 15 carrier rocket (hereinafter referred to as the "Chang 2F rocket") took off at the Jiuquan Satellite Launch Center. The Shenzhou 15 manned spacecraft with three astronauts was accurately sent into the predetermined orbit.

China's space station will dock two manned spacecraft for the first time, and six astronauts will undergo on-orbit handover.

  This is the first time that the new batch of Chang-2F rockets and brand-new ground equipment have been used in manned launch missions.

Liu Feng, the first president of the China Aerospace Science and Technology Corporation, said that the control system of the new batch of rockets has applied the take-off time deviation correction technology, so that when the ignition time of the rocket deviates, it can be automatically corrected within a certain range. Orbit and rendezvous and docking tasks are completed.

At the same time, the model team has also upgraded and iterated the telemetry system to further improve the telemetry accuracy.

  Since the launch of the Shenzhou 12 mission, the Chang-2F rocket has adopted the launch mode of "one launch, one backup" and "rolling backup", adding "double insurance" to the life safety of astronauts.

  In the past, before the Chang-2F rocket launched the Shenzhou manned spacecraft, the astronaut crew had returned to the ground safely, but in this mission, the two astronaut crews of Shenzhou 14 and Shenzhou 15 will be rotated in orbit. It means that while preparing to launch the Shenzhou 15 spacecraft, the Chang 2F Yao 15 rocket also undertakes the emergency rescue mission for the crew of the Shenzhou 14 astronauts, and the rescue mission cannot be lifted until before the launch.

  This year is the decisive year for the construction of the space station. At present, the basic configuration of the Chinese space station "T" has been assembled.

The Chang 2 F Yao 15 rocket accurately sent the Shenzhou 15 manned spacecraft into the predetermined orbit, successfully completing the last manned mission of the space station during the orbital construction phase.

In the next few years, the Chang-2F rocket will continue to perform launch missions at a high frequency of 2 rounds per year.