Detailed explanation why the construction of the space station uses a type 3 rocket

Qi Tian's experimental compartment and rocket combination have recently transferred to the launch area, and they are about to choose.

Tiangong -1 target aircraft, Tiangong No. 2 space laboratory and Shenzhou series manned spacecraft are all completed by the Long March 2 F carrier rocket. So why should the space station build the third rocket?

Let's review the three rockets of the long five B, Seven, and Long Two F.

Long March 5 is a new generation of large low -temperature liquid bundled carrier rockets. The first flight test was completed in November 2016. Responsible for launch tasks such as the third phase of the lunar exploration project and the manned space space station test compartment. After the successful development of the Long March 5, its comprehensive performance indicators are equivalent to the international advanced level.

Long March 7 is a new generation of medium -sized carrier rocket developed to meet the space station engineering launch cargo spacecraft. The cargo spacecraft, as a messenger who transports goods and pushing agents to the space station and space science laboratory, is affectionately called the "courier brother" in space.

The Long March 2 F -Car Rocket is currently the only one -type manned carrier rocket in my country. Since its first flight in 1999, 14 Shenzhou spacecraft and 2 space laboratories have been successfully launched. The rate is 100%.

According to Qian Hang, the designer of the first house of China Aerospace Science and Technology Group, introduced that in general, these three rockets are the main rockets that are responsible for the construction of my country's space station.

First of all, you have to say "heavy". In the space station construction task, the core and core compartment, the test compartment, and the Dream Tian experimental cabin have exceeded 20 tons, and the Tianzhou freight ship also exceeds 13 tons. The carrying capacity is 8.6 tons. The previously launched Tiangong -1 and Tiangong No. 2 only verified the related technologies of the space station, so the tonnage was relatively small.

The space station was officially opened, and the long F -rocket was full -time.

In terms of capacity, the long -term B -Rockets near -ground rail capacity exceeds 23 tons.

Secondly, the construction of the space station is of great significance. In addition to the corresponding carrying capacity, the rocket is "high and reliable".

In addition, these three types of rockets have the ability to launch with zero window. The space station runs in space at a high speed. It must be accurately connected with it.

On July 18th, I asked the Tianyan Experimental Curring and Long March 5 Yao San Load Rocket Combination to transfer to the launch tower. Xinhua News Agency (Photo by Tuhai Super)

Qian Hang said that the most fundamental reason for the construction of a three -type rocket for the construction of the space station is that aerospace is a systematic engineering. my country's Long March family rocket and space station construction, lunar exploration fire, Beidou satellite navigation system and other related countries are carried out as planned. Each rocket has its own division of labor according to the characteristics of transportation, launch track and other characteristics.

The three rockets of the long five B, Seven, and Long Two F respectively perform the space station cabin, freight spacecraft, and manned spacecraft launch tasks. It is more suitable.

In addition to the construction of space stations, my country will also implement the tasks such as small planet detection and manned moon landing in the future. To this end, the development of the Long March 9 heavy rocket and the new generation of manned rockets will also be promoted as planned. (Reporter Hu Yan, Song Chen)

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