With the smooth return of Zhai Zhigang, Wang Yaping and ye Guangfu, the Shenzhou 13 manned mission was a success, marking the successful completion of the key technology verification stage of the Chinese space station and will enter the construction stage. What breakthroughs have been made in the verification stage of key technologies of China's space station? What are the plans and arrangements for the construction phase? The State Information Office held a press conference on the construction progress of China's space station on the 17th to introduce the relevant situation. The key technology verification stage was successfully completed, and the key technology of space station construction was comprehensively broken through "Since 2020, China has successfully carried out the first flight of the long march 5B carrier rocket, the space station Tianhe core module, Shenzhou 12 and Shenzhou 13 manned spacecraft, Tianzhou 2 and Tianzhou 3 cargo spacecraft, and successfully completed the mission objectives of the key technology verification stage." Hao Chun, director of China Manned Space Engineering Office, said. Hao Chun introduced that in the verification stage of key technologies of the space station, China has comprehensively broken through the key technologies of the construction of the space station, including the life and work support technology of astronauts staying in orbit for a long time, regenerative environmental control and life support technology, and the transposition technology of manipulator auxiliary cabin, which has overcome the technical difficulties for the construction of the follow-up space station. "During the stay of Shenzhou 12 and Shenzhou 13, the regenerative life support system of Tianhe core module provides a good manned environment for astronauts and meets the material metabolism needs of astronauts in orbit; the large flexible solar cell wing and its power supply technology provide sufficient energy supply in tasks with large energy demand such as out of module activities, handover and docking, and mechanical arm transposition." Academician Yang Hong, chief designer of the space station system of China Manned Space Engineering and researcher of China Academy of space technology, said. The Shenzhou 13 flight crew flew for 183 days, successfully completed two extravehicular activities, two space lectures, more than 40 in orbit experiments and test tasks, and completed more than 80 in orbit data collection and analysis. The three astronauts were in good physical and psychological condition during their in orbit flight. "The successful implementation of Shenzhou 13 mission has further verified the scientific and effective selection and training technology of Chinese astronauts. At the same time, it also shows that China has fully possessed the long-term flight resident support ability of astronauts, which has laid a foundation for follow-up missions." Huang Weifen, chief designer of the astronaut system of China's manned space project and researcher of the Chinese Astronaut Research and training center, said. In addition, in the key technology verification stage of the space station, China has also improved the mission organization and command system, preliminarily established a manned space operation and management system with Chinese characteristics, and achieved high-level space scientific research results and remarkable comprehensive benefits. The on orbit construction of the space station will be completed in 2022, and a total of 6 missions are planned At present, China is organizing a system wide comprehensive evaluation of the key technology verification stage of the space station, and will fully transfer to the construction stage of the space station after meeting the requirements. "In 2022, we will complete the on orbit construction of the Chinese space station and plan to carry out six missions." Hao Chun said. According to the mission arrangement, the Tianzhou 4 cargo spacecraft will be launched in May, the Shenzhou 14 manned spacecraft will be launched in June, the space station sky inquiry experimental module will be launched in July and the space station dreamsky experimental module will be launched in October. The three compartments of the space station will form a "t" basic configuration to complete the on orbit construction of the Chinese space station. After that, the Tianzhou 5 cargo spacecraft and Shenzhou 15 manned spacecraft will be launched. It is reported that the Shenzhou 14 and Shenzhou 15 crew, both composed of three astronauts, will fly in orbit for six months, and will rotate in orbit for the first time to realize uninterrupted manned presence. The six astronauts in the two crew will stay in orbit for 5 to 10 days. "According to the mission arrangement during the construction phase of the space station, the astronauts and crew for two manned missions have been selected. At present, the Shenzhou 14 and Shenzhou 15 flight crew are in good physical and mental condition and are actively carrying out relevant training and mission preparation." Huang Weifen said. "After the completion of the construction of the space station, the two experimental modules will be the main workplaces for astronauts in orbit. In both experimental modules, space science experiments and technical experiments inside and outside the sealed module can be carried out, and experiments in many fields such as space science, space materials, space medicine and space exploration can be carried out." Yang Hong said that at present, the development of Wentian experimental module and Mengtian experimental module on the ground is progressing smoothly. Promote the development of high-level applications and better serve the national economy and the people's livelihood "After completing the on orbit construction of the space station this year, the project will enter the application and development stage for more than 10 years. The preliminary plan is to launch two manned spacecraft and two cargo spacecraft every year. Astronauts should stay in orbit for a long time, carry out space science and technology experiments, and take care of and maintain the space station." Hao Chun said. In order to further improve the comprehensive ability and technical level of the project, China will also develop a new generation of manned launch vehicles and manned spacecraft. Among them, the return capsule of the new generation of manned launch vehicle and the new generation of manned spacecraft can be reused; The comprehensive capability of the new generation of manned spacecraft will also be greatly improved, and it can carry 7 astronauts. In addition, more large-scale space research experiments and new technology experiments will be carried out. "The manned spaceflight project is a great cause of 'being both tall and grounded'." Hao Chun said that while realizing its own development, the manned space project can drive the upgrading of relevant industries and promote economic and social development, which is closely related to the national economy and the people's livelihood. It is reported that manned spaceflight is a scientific and technological activity with the most complex system, the most intensive science and technology and the most active innovation. With the continuous emergence of scientific and technological achievements, they will be applied to various fields related to the national economy and the people's livelihood. Over the past 30 years since the development of China's manned space project, preliminary statistics show that more than 4000 technical achievements have been widely used in various industries of the national economy. "In the future, China's space station will also carry out a large number of scientific experiments and new technology verification, such as space life science, space material science and aerospace medicine. It is expected to make major achievements and breakthroughs in scientific exploration and applied research. At the same time, these technologies will be more transformed to serve social and economic development and the national economy and people's livelihood." Hao Chun said. (Xinhua News Agency)