Why use these three rockets to build a Chinese space station

Long Two F Rockets

Five B Rockets

Long Seven Rockets

Photo source: China Institute of Lauding Rocket Technology

Anyone who pays attention to aerospace knows that the launch of Tiangong -1 target aircraft, Tiangong No. 2 space laboratory and Shenzhou series manned spacecraft are all completed by the Long March 2 F -Car Rockets. The F -Car Rocket (hereinafter referred to as the "Long Two F Rockets"), Long March 5 Lirep Rockets (hereinafter referred to as the "Long Five B Rockets") and the Long March VII laid -up rocket (hereinafter referred to as the "Long Seven Rockets") three rockets? In response, the reporter interviewed Qian Hang, designer designer designer designers.

In Qian Hang's view, the above -mentioned three rockets are "specially developed for the construction of my country's space station, and they must take on such responsibilities and missions."

First of all, the carrier capacity. During the construction task of the space station, the core compartment, the test compartment and the Dream Tianyian experimental cabin exceeded 20 tons, and the Tianzhou freight ship also exceeded 13 tons. The near -land rail capacity of the long rocket is 14 tons, and the near -land track capacity of the long five -B rocket exceeds 23 tons. "The previously launched Tiangong -1 and Tiangong No. 2 are just to verify the related technologies of the space station. The tonnage is relatively small and can be equipped by the long two F rocket. After the space station is officially opened, it is the only manned rocket in my country. The long two F was full -time, and the cargo mission was handed over to the rocket with greater capacity. "Qian Hang explained.

Followed by high reliability requirements. The construction of the space station is of great significance. In addition to the corresponding loading capacity, the rocket is the first condition is high reliability. "The space station runs at space at a very high speed. To be accurately connected with it, the time accuracy error of the rocket launch must be controlled within 1 second -otherwise it will not be able to reach the specified location, it takes a huge price to adjust the track, and even miss the launch window. It seriously affects the task cycle. "However, Qian Hang said that the three rockets have zero -window launch capacity. This requirement is not bad, and the long two F rockets have designed the fault detection and escape system for the manned task.

Finally, the most fundamental reason for building a three -rocket to build a Chinese space station is the systemicity of aerospace engineering. In our country, whether it is the Long March family series of rockets, or the construction of the space station, the exploration of the fire, and the Beidou satellite navigation system, etc., it is carried out according to the plan; and according to the difference in capacity, launch track, etc. They all have their own unique division of labor, and everyone complement each other. "The three rockets of the long five, the long, and seven -long two -type rockets perform the space station cabin section, freight spacecraft and manned spacecraft launch tasks, respectively. On the one hand, it is the most suitable. "Qian Hang emphasized.

It is reported that in addition to the construction of space stations, my country will also implement tasks such as small planet detection and manned lunar moon in the future. To this end, the development of the Long March 9 heavy rocket and the new generation manned rocket is being promoted as planned. At that time, the power of the "Long March Family" will continue to grow, and the stage of Chinese aerospace will be more colorful! (Zhang Lei, a reporter from Guangming Daily all media reporter Li Yanming)

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