Chinese people want to settle down in space! I sent the hall up first today

Share with friends and circle of friends with wechat scan QR code > Wenyu Liu > produce the column group of Netease technology's "chasing the dream starry sky" "5, 4, 3, 2, 1, ignite." At 11:23 Beijing time on April 29, 2021, with the launch of the long march 5B yao-2 carrier rocket, China has created the heaviest < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%88%AA%E5%A4%A9%E5%99%A8 "> spacecraft < / a >, which is also the largest single spacecraft in the 21st century --" Tianhe "core module launched "Tianhe" core module launch can be said to be the foundation of the construction of the Chinese space station. Next, this year and next, China will launch two experimental modules, the "Wentian" and the "Mengtian". In 2022, the three modules will be combined to form a "t" structure, initially forming a complete space station, the Tiangong space station. In the follow-up, four times of < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%B4%A7%E8%BF%90%E9%A3%9E%E8%88%B9 "> cargo ship < / a >, 4 times < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E8%BD%BD%E4%BA%BA%E9%A3%9E%E8%88%B9 "> the launch of the manned spaceship < / a > has achieved the third task goal of the three-step development strategy of China's manned space project "Tiangong space station" will be officially put into operation in 2023 after the completion of its formation, with an on orbit life of more than 15 years, and can carry six < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E5%AE%87%E8%88%AA%E5%91%98 "> astronauts < / a >, to ensure three astronauts on duty for half a year. If the international space station is decommissioned in 2024, China's "Tiangong space station" may become the only space station for human beings in space Huang Zhicheng, an aerospace expert, told Netease that once the Tiangong space station is completed, China's manned space project will enter the era of space station. China has also become the third country to build a space station independently On April 29, Tianhe, the largest spacecraft, was launched from the core module of the long march 5B yao-2 carrier rocket. How much do you know about the "Tianhe" core module "Tianhe" core module is the core module of Tiangong, the next generation space station in China. In the early stage of the space station, there were two experimental modules, namely, Wentian and Mengtian; When the space station is completed, an optical module will be launched separately, and an expansion module can be added later In an interview with people's daily, Zhu Guangchen, deputy chief designer of the space station system of the Fifth Academy of China Aerospace Science and technology group, once compared: "if the Shenzhou spacecraft is a car, Tiangong-1 and tiangong-2 are equivalent to a house with one room and one living room, while the space station is like a house with three rooms, two living rooms and a storage room." "Tianhe" is located in the middle end of the space station, which is equivalent to the trunk of the tree. From the introduction, the volume of Tianhe is larger than any cabin of the international space station. There is at least 50 cubic meters of space inside, with a length of about 18.1 meters (including connectors). Standing up, it is equivalent to the height of a six story building, with a diameter of 4.2 meters, which is bigger than the width of the train carriage. The total weight is about 22.5 tons, and it can support three < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%88%AA%E5%A4%A9%E5%91%98 "> astronaut is the largest spacecraft developed in China and the heaviest spacecraft since the 21st century it is understood that during the air show in Zhuhai in 2018, the preliminary model of the core module of Tianhe was publicly displayed, and visitors queued up to visit the module, just like a train from the cabin segment, the core module of Tianhe is composed of three parts: life control module, resource module and node module, which will provide living and scientific research environment for astronauts and scientists in space, support long-term residence, and dock with cargo and manned spacecraft in addition, the core module is also equipped with a pair of strong and powerful mechanical arms, one large and one small, which can truly simulate the human arm's action and ability. It can grasp objects in space, the large one can grasp 25 tons of objects in space, and the small one can cooperate with the large one according to the introduction, there are some advanced black technologies in the core module of Tianhe, such as three junction GaAs solar cells with the highest photoelectric conversion efficiency, and truss type flexible solar cell wings which can be unfolded twice are applied unprecedentedly, and its power generation and power supply efficiency is much higher than that of other spacecraft In addition, the electric propulsion engine is also used in the core module, which can be used to adjust the attitude and orbit of the space station during operation. Because the electric propulsion mode is used, it can use propellant with high efficiency, and a small amount of propellant can meet the requirements of attitude adjustment and orbit lifting, etc What does the successful launch of Tianhe mean to China? Huang Zhicheng, an aerospace expert, said that China's manned space flight is divided into three steps. After Shenzhou-5 completed the first step and tiangong-2 completed the second step, China's manned space flight has entered the third step, which is also the final goal of this phase, marking that China has entered the era of space station Why should China build its own space station after the successful launch of "Tianhe", China will launch two experimental sections of "Wentian" and "Mengtian" successively in 2022. In 2022, the three sections will be combined to form a "t" structure to form a complete space station, Tiangong space station, and realize the third task goal of the three-step development strategy of China's manned space project the space station is a manned spacecraft that operates in low earth orbit for a long time, can be visited by many astronauts, and can work and live for a long time it is reported that in addition to one core module and two experimental modules, China has also arranged the launching missions of Tianzhou 4 cargo spacecraft, Shenzhou 14 manned spacecraft, Tianzhou 5 cargo spacecraft and Shenzhou 15 manned spacecraft at present, the crew of Shenzhou manned spacecraft for four times in orbit construction stage has been determined, and 18 newly selected astronauts have registered for training. The first group of astronauts with flying experience will be the commander, the first group of astronauts without flying experience and the second group of astronauts will be the assistants. Among the first group of astronauts, those who have not yet flown are expected to realize their dream of space. The third group of astronauts are mainly responsible for the operation phase of Tiangong space station after 2022 Bao Weimin, director of the science and Technology Commission of Aerospace Science and technology group and academician of the Chinese Academy of Sciences, once said in an interview with cnr.com that (Tiangong) KongThe inter station is the most complex space system in China. It will be built on orbit, that is, the core module and two experimental modules will form a T-shape, and the three modules will be assembled in space. The three modules are all integrated design, so its configuration is very complex "it is of great significance to build a space station in China. There are two main tasks for the space station. One is to conduct space science and technology experiments in the earth's low earth orbit of about 400 km; The other is to lay a firm foundation for future human exploration of the moon, especially Mars. " Huang Zhicheng, an aerospace expert, told Netease he went on to explain that people are increasingly aware of the significance of the second. The space station will become the infrastructure for human beings to go to deep space, because it takes at least half a year for human beings to go to Mars, and in this process, they endure strong space radiation, which has a very important impact on human body. The space station can provide basic research work in space, especially human health "on the other hand, to build a base on the moon, human beings must solve a series of tasks of equipment, manufacturing and maintenance, so such scientific and technological experiments can be carried out in the space station. Therefore, in recent years, we have realized that an important task of the space station is to provide necessary technical preparation for human exploration of deep space. " Huang Zhicheng thinks moreover, China will become the third country in the world to build a space station independently by completing the construction of Tiangong space station "the international space station will be decommissioned in 2024, which may be slightly extended; Russia is ready to build its own space station; Although the international space station is an experiment and example of international cooperation, it has always excluded China from cooperation. It is of great significance for China to build its own space station. " it is understood that the international space station is led by the United States and Russia, including six space agencies including Canada, Japan, Brazil and the European Space Agency, with a total of 16 countries participating in the development. China has repeatedly applied to join, but it has been refused. In 2011, the U.S. government also unilaterally issued a ban, clearly stipulating the technical blockade on China. Since then, China has embarked on the path of independent research and development of the space station Tiangong space station or the only space station in space public information shows that there are many countries in the world that have proposed manned space program, but only three countries can really realize the independent launch of human beings into space, including Russia (including the former Soviet Union), the United States and China in an interview with outlook, Yang Hong, chief designer of the space station system of China Academy of space technology, said that manned spaceflight is the most complex and difficult space project in the world today according to outlook, in terms of the history of manned space flight abroad, manned space flight is the most expensive project ever, surpassing pyramids, cathedrals and miracle projects of all ages This is especially true for space stations. It is understood that at present, the only manned facility in space is the international space station, which has more than 130 billion US dollars for construction and 4 billion US dollars for maintenance every year. It is "the most expensive scientific research tool for mankind" International Space Station not only that, due to the aging of equipment and materials, the international space station has also had many air leakage and decompression accidents. The Russian space agency had planned to close the space station in 2020, which was later postponed to 2024. If the international space station is decommissioned in 2024, China's "Tiangong space station" may become the only space station for human beings in space On April 21 this year, the head of Russia's national space group also announced that it would gradually withdraw from the international space station, and if approved by President Putin, Russia is ready to build its own space station by 2030