What are the latest achievements in China's space field?

In 2020, China Aerospace will carry out 39 launch missions with a launch load of 103.06 tons, ranking second in the world in terms of launch times and launch load quality. Among them, the Long March series of launch vehicles completed 34 launches.

The first flight of the Long March V-B carrier rocket was successful, which started the mission of manned space station. The Long March V carrier rocket was put into full use, and the Mars probe and Chang 'e V probe were successfully launched, which realized the leap of China's geosynchronous transfer orbit carrying capacity from 5.5 tons to 14 tons.

The success of the first flight of the Long March 8 carrier rocket has effectively improved China's ability to carry out high-density launch missions. The carrying capacity of sun-synchronous orbit reaches 4.5 tons, which breaks through the key technologies such as rapid integrated design and production, electrical integration, throttling and load reduction, realizes the first engineering application of engine thrust adjustment technology, lays a solid foundation for reuse, and meets the needs of satellite networking engineering and commercial launch service.

Important progress has been made in tackling key technical problems of large thrust afterburner cycle hydrogen-oxygen engine. The successful test run of China maximum thrust segmented solid rocket engine laid a foundation for the subsequent development of carrying capacity.

In terms of scientific and technological activities of spacecraft, 77 spacecraft were developed and launched throughout the year, with a total mass of 102.438+0 tons, ranking second in the world in terms of quantity and quality. China's major aerospace projects and special projects have been steadily advanced, and its aerospace technology and application capabilities have been greatly improved. The number of commercial satellite research institutions has continued to grow, and the research capacity has been steadily improved. The types of research satellites have gradually changed from technical test satellites to application satellites.

The high-speed reentry flight test of the new generation manned spacecraft test ship was a complete success. This test completed the flight verification of high-speed reentry control, thermal protection, group parachute+airbag landing mode and reuse. The spacecraft has the characteristics of high safety, high reliability, modularization, multi-task adaptability and reusability, which laid a solid foundation for China manned spacecraft to sail to the moon.

Chang 'e V completed the world's first unmanned rendezvous and docking in lunar orbit. China's first sampling of extraterrestrial objects, takeoff of extraterrestrial objects, rendezvous and docking of extraterrestrial orbits, high-speed reentry of the second universe and other major technological breakthroughs have been continuously realized, and the three-step development plan of "circling, falling and returning" for the lunar exploration project has been completed, which has become an important milestone for China to build a space power.

"Tian Wen-1" Mars exploration mission took the first step in China's planetary exploration. It is planned to realize the three major tasks of "circling the earth, landing and patrolling exploration" for the first time in the world, and set five scientific goals, involving the study of space environment, morphological characteristics and surface structure, which will promote the all-round development of planetary exploration and basic scientific research in China. At present, the exploration around Mars has been successfully carried out, and it is planned to land on Mars in May-June, 2002/KLOC-0, and carry out patrol exploration.

Beidou-3 global satellite navigation system was completed and opened six months ahead of schedule. This system is the largest, widest and most demanding giant complex space system in China so far. The hybrid constellation configuration pioneered in China is adopted, and the satellite core component 100% is localized. It can provide seven kinds of services, such as positioning navigation timing, global short message communication, regional short message communication, international search and rescue, satellite-based enhancement, ground-based enhancement and precise single point positioning, and its performance index has reached the international first-class level. Beidou entered a new era of global service.

Flux broadband satellite system started construction. The Asia-Pacific 6D communication satellite was successfully launched, which is the civil and commercial communication satellite with the largest communication capacity, the largest number of beams, the highest output power and the most complicated design in China. Satellites mainly provide all-regional, all-weather satellite broadband communication services for users in the Asia-Pacific region, and meet various application requirements such as maritime communication, airborne communication, vehicle-mounted communication, fixed satellite broadband Internet access, etc.

The major project of high-resolution Earth observation system ended. This provides an important guarantee for China to obtain high-resolution global remote sensing information for a long time. China Gao Fen series satellites have basically formed a high-resolution Earth observation system covering different spatial resolutions, different coverage widths, different spectral bands and different revisit periods. The level of space-based Earth observation has been greatly improved, and the autonomous rate of satellite data in China has been further improved. The successful launch of high-resolution multi-mode synthetic imaging satellite and Ziyuan-3-03 satellite has enhanced China's comprehensive Earth observation capability. Among them, the high-resolution multi-mode integrated imaging satellite supports a variety of agile imaging modes, realizing "motion imaging and multi-angle imaging" for the first time, greatly improving the efficiency of image acquisition.

China's first ocean color satellite constellation was built. The construction of the ocean dynamic environment observation network was promoted in an orderly manner, and the Ocean-1 D satellite was successfully launched, which together with the on-orbit Ocean-1 C satellite formed China's first ocean color satellite constellation. Ocean II C star was successfully launched and networked with Ocean II B star in orbit. It is planned to launch Ocean II D star in 20021year. By then, Ocean II B/C/D satellite network will form the world's first marine dynamic environment monitoring network.

The data of "Zhang Heng-1" satellite participated in the construction of a new generation of global geomagnetic field reference model. The satellite obtained the first batch of global geomagnetic field observation data with completely independent intellectual property rights in China, and constructed a global geomagnetic field reference model of order 15. The "Qin Tian-1" satellite has achieved the on-orbit verification of the highest level of drag-free control technology in China, laying a solid technical foundation for the subsequent development of space gravitational wave detection spacecraft and the construction of high-precision space inertial reference.

Practice the key technologies of 20 satellites in-orbit verification 16 communication, navigation, remote sensing and other fields. The overall technical level of the Q/V band Qualcomm communication load carried by the satellite has reached the international advanced level, laying a foundation for the subsequent development of 1 terabit/s Qualcomm communication satellite and global low-orbit Internet satellite. The laser communication payload has realized the satellite-to-ground communication capability of 10 gigabit/second geosynchronous orbit, which is the highest rate in the world. Quantum communication load completes the stable transmission of satellite-ground polarization coding in the world's first geosynchronous orbit, which lays a good foundation for traction and promoting the development of related fields.

Completed the world's first on-orbit demonstration of 3D printing of continuous fiber reinforced composites in space. The "3D printing system of composite space" carried by the return cabin of the new generation manned spacecraft test ship independently completed the printing of continuous fiber reinforced composite samples during the on-orbit period. This experiment is the first space 3D printing in China and the first space 3D printing experiment of continuous fiber reinforced composites in the world, which is of great significance to the long-term on-orbit operation of the space station and the on-orbit manufacturing of super-large structures in the future.