Five questions about what Tiangong No. 2 is for you to quickly understand
At 22:04:09 on September 15th, the space test room equipped with Tiangong No. 2 was officially ignited by the Long March 2F carrier rocket at the Jiuquan Satellite Launch Center. By 22:25, Tiangong 2 announced that the launch mission was officially successful. . Today, at 7:30 in the morning (October 17), the Shenzhou 11 manned spaceship carrying two astronauts was officially launched. Tiangong 2 will shoulder the first task of accurately docking Shenzhou No. 11.
According to the plan, Tiangong 2 will enter the running track with a height of about 384 kilometers after several changes, waiting for the Shenzhou 11 manned spacecraft scheduled to be launched in mid-to-late October. The following questions will quickly help you understand China's first real space laboratory.
What is the length of the Tiangong II?
The Tiangong 2 is similar in appearance to the Tiangong No. 1 launched in 2011. Both the experimental and resource cabin configurations are used. Tiangong 2 is 10.4 meters long and has a maximum diameter of 3.35 meters. The sun wing is about 18.4 meters wide and weighs 8.6 tons. It has a design life of 2 years. The range of astronaut activities in the cabin is about 16 to 18 cubic meters. According to the manpower of one person living in 6 cubic meters, the two astronauts on Tiangong 2 are still relatively spacious.
What is the main task of Tiangong 2?
According to Wu Ping, deputy director of the China Manned Space Engineering Office, the main purpose of launching Tiangong 2 is to accept the visit of the Shenzhou 11 manned spacecraft, complete the mid-term presence of astronauts, and assess the life, health and work security of the crew for long-term flight. And other related technologies; accepting the visit of the Tianzhou-1 cargo spacecraft, verifying and verifying the propellant on-track supplement technology; conducting experiments in space medicine, space science experiments and space application technology, as well as on-orbit maintenance and space station technical verification.
Compared with the Tiangong No.1, the astronauts of Shenba, Shenjiu and Shenshi only stayed for about one to two weeks, and this time Tianan-2 should ensure that the astronauts of Shenzhou 11 can stay for 30 days.
How does Tiangong 2 guarantee the two-day astronauts to stay for 30 days?In order to facilitate the work and life of the astronauts, Tiangong No. 2 uses a number of humanized designs: the cabin lights are in beige tones, the brightness can be adjusted manually, and even the bedside lights are installed for each astronaut; the astronauts can The space laboratory receives terrestrial television signals and can communicate with the family on the ground and in private. To ensure that the astronauts do not decline in the microgravity environment, Tiangong II is equipped with strength training equipment and regularly cardiovascular and Physical medical indicators are monitored.
What are the powerful experiments on Tiangong 2?Wu Ping introduced that the main goal of Tiangong No. 1 is to verify the rendezvous and docking technology, while Tiangong No. 2 will carry out large-scale space science experiments and space application experiments as well as space medical experiments. This time, 14 projects reflect the frontiers of science and strategy. The science and application tasks of the direction of technology development.
Take the space cold atomic clock as an example. The most accurate timepiece in our lives, about one minute of error per year. The accuracy of the atomic clock can reach one second per 20 million years of error, while the Tiangong 2 will carry the world's first space-precision ultra-high precision ultra-cold atomic clock, the error can be reduced to 200 million a second, the time base for space systems. To contribute to important areas such as deep space exploration and general relativity verification.
After the Tiangong II, how far is China from the construction of the space station?The space station is the third step of China's manned spaceflight engineering strategy. It is planned to be completed around 2020. It will be fully operational in 2022. It is expected to operate for more than ten years. The astronauts may stay in the space station for more than one year.
The space station is a multi-cabin aircraft with a weight of up to 20 tons per section. There are multiple rendezvous interfaces, which can realize multi-aircraft docking at the same time. Therefore, the “block†of the future space station will be much larger than the Tiangong-2. The construction of the space station involves a series of key technical support such as the long-term presence of astronauts, the maintenance of equipment inside and outside the microgravity environment, and the supplementation of propellant. It needs to be mastered through preliminary tests. These tests will be launched on Tiangong 2nd.
With the expiration of the International Space Station (ISS) in 2024, China's space station will become the world's only space laboratory, which is the third country with space station technology after Russia and the United States.
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