At 0:43 on December 30, 2021, the long march 3B carrier rocket successfully put the communication technology test satellite No. 9 into the predetermined orbit, bringing a successful end to China's space launch mission in 2021. According to statistics, the number of space launches in China reached 55 in 2021, ranking first in the world. From the phased major victory in the construction of China's space station to the expansion of China's new interstellar exploration journey of "tianwen-1", in the year when the number of space launches once again set a new historical record, China's aerospace industry has made remarkable achievements, a number of major Aerospace plans have reached or gradually approached the set goals, and more long-term exploration plans are ready to go. 55 times In 2021, the number of launches reached a new high, and many major aerospace projects in China entered the harvest period In 2021, China's number of space launches reached a new high. Including long march series rockets, fast boat series rockets and rockets developed by private aerospace enterprises, it carried out 55 launch missions throughout the year and sent hundreds (including carrying) spacecraft into space. Among them, the long march series launch vehicles completed 48 launches in 2021, and the annual number of launches reached the highest "40 +" in history for the first time, with a launch success rate of 100%, laying a solid foundation for China to accelerate the construction of an aerospace power. In this year, the long march series carrier rockets completed the 400th launch, and the Long March 5 B, Long March 2 F and Long March 7 successfully completed the construction task of the manned space engineering space station in that year with five launches, sending Tianhe core module, two groups of astronauts and two cargo spacecraft into space respectively. The "gold medal rocket" Long March 3A series carrier rocket has completed 12 launches, achieved 12 victories in 12 battles, and achieved the "full success" of the task of the whole year. This is not only a quantitative change, but also reflects the progress of the national aerospace industry strength, aerospace mission execution ability and the national overall scientific and technological strength in the new era. The past year was not only a "big year" in the number of space launches, but also a big year in terms of weight. Many major space projects in China have entered a fruitful harvest period. In 2021, the on orbit construction of the Chinese space station was fully carried out. Two groups of Chinese astronauts entered their own space station on behalf of the Chinese people and carried out a space stay for up to six months. In 2020, the "tianwen-1" probe launched by the Long March 5 carrier rocket also landed on Mars in 2021 and successfully realized patrol exploration. On October 14, 2021, China's first solar exploration satellite "Xihe" successfully entered the predetermined orbit, and China officially entered the "era of solar exploration". Aerospace experts pointed out that the successful implementation of major Aerospace tasks and the smooth progress of planning are of great significance to realize a new leap in the field of aerospace technology and promote China's transformation from a large Aerospace country to a powerful Aerospace country. 96% The launch success rate of long march series rockets is world-class, and more than 700 spacecraft have been sent into space in 51 years At present, China's aerospace has entered the normalization stage of high-density launch. At the same time of high-density launch, it has maintained a very high success rate. Taking recent years as an example, in 2018, the world launched 114 times, 109 times successfully, and China launched 39 times, 38 times successfully; In 2019, the world aerospace launched 103 times, 95 times successfully, and China launched 34 times, 31 times successfully; In 2020, the world carried out 114 launch missions. China carried out 39 space launches and launched 89 spacecraft. The number of launches and the mass of launch loads ranked second in the world. By 2021, the number of space launches in China will reach a record 55. The long march rocket is the absolute main force of China's space launch. The "dongfanghong-1" satellite launched on April 24, 1970 is its first flight. In 51 years, the long march series carrier rockets have carried out 92% of China's space launch missions, and successively sent more than 700 spacecraft into space, with a launch success rate of 96%. Academician long Lehao, senior consultant of the long march series of launch vehicles of the first Academy of China Aerospace Science and Technology Corporation, said that in the 400 launches of the long march series of rockets, the first 100 launches took 37 years; The second 100 launches took more than 7 years; The third 100 launches took more than 4 years; The fourth 100 launches took only two years and nine months. Academician long Lehao believes that the continuous shortening of the launch interval per hundred times of the long march rocket not only indicates that the high-density launch of the long march rocket has been normalized, but also reflects the rapid development of China's aerospace and the rapid improvement of China's scientific and technological level and comprehensive national strength. Especially since the 18th National Congress of the Communist Party of China, the launch capability of the long march series of launch vehicles has been continuously improved. They can launch different earth orbits and different types of spacecraft at low, medium and high altitudes, so that the Chinese people can take a further step in exploring the universe: —— The new generation of launch vehicles represented by Long March 5, Long March 7 and Long March 8 have successfully made their first flight, China's new generation of launch vehicle type spectrum has been gradually improved, and the ability to enter and leave space has been further strengthened; —— The long march 3B carrier rocket successfully launched "Chang'e 4" to complete mankind's first soft landing on the back of the moon, and the Long March 5 rocket successfully launched "Chang'e 5" to realize the sampling return of China's extraterrestrial heaven and earth for the first time, adding a new footnote to the Chinese nation's dream of exploring the moon; —— The Long March 5 rocket launched the "tianwen-1" Mars probe, and China took the first step in independent planetary exploration; —— The long march 3A series Rockets have completed the mission of launching all Beidou navigation satellites and helped to fully complete the Beidou global satellite navigation system; —— Long March 5 B, Long March 2 F and Long March 7 Launch Vehicles successively put Tianhe core module, Shenzhou 12 manned spacecraft and Tianzhou 2 cargo spacecraft into the predetermined orbit, laying a solid foundation for the construction of China's space station At present, the launch success rate and orbit accuracy of long march series launch vehicles have reached the world-class level. More than 40 times This year, space launch missions, including the first flight of the long march 6A carrier rocket, will be completed As a vehicle to enter space, launch vehicle is the premise and foundation of space activities, and determines the height and size of the space exploration stage. According to the plan of China Aerospace Science and technology group, the research and development unit of long march series launch vehicles, there will be more than 40 space launch missions in 2022, including 6 major manned space missions, including 2 launches of cargo spacecraft, 2 launches of Shenzhou spacecraft and experimental modules I and II. This year, China's space station will be fully completed, which also means that the "three-step" development strategy of China's manned space project will be finally realized. In addition, the launch of several key rocket models, such as the first flight of the long march 6A carrier rocket, will be completed this year. In the future, after the space station enters the operation stage, the long march 2F and Long March 7 launch vehicles will maintain the frequency of launching twice a year. And in the near future, major aerospace projects such as the fourth phase of the lunar exploration project, asteroid exploration, Jupiter exploration, manned lunar exploration and the first Mars sampling will be expected to start. For these major aerospace engineering tasks, innovative exploration and risk challenges are unprecedented. Long Lehao said that continuous innovation is the key to the continuous leap forward of China's aerospace. We should adhere to facing the forefront of world science and technology, have the courage to put forward new scientific research directions, and strive to narrow the gap with the world's top science and technology. In the direction of Aerospace Exploration and technical route, China's aerospace has gradually formed its own characteristics, showing China's wisdom and China's plan in the world aerospace field. The core technology and key components of the long march series launch vehicles are firmly in their own hands from beginning to end. Based on the international aerospace development trend and maintaining the advanced level of space transportation system, at the same time, according to the needs of space launch, the blueprint of the type spectrum of the new generation of long march series launch vehicles is becoming a reality. A series of new launch vehicles have appeared one after another, and the new generation of manned launch vehicles and heavy launch vehicles are being developed as planned. As a powerful supplement to China's aerospace, private rocket and satellite R & D institutions such as blue arrow aerospace, Xinghe power and Galaxy aerospace are also accelerating on the commercial aerospace track. Aerospace experts pointed out that by continuously strengthening independent innovation and constantly overcoming key core technologies, the Chinese people will take a more stable and further step in exploring space. (Xinhua News Agency)