On June 27, China announced the formation of a national VLEO Technology Innovation and Industry Development Alliance, marking a major step forward in the country"s efforts to advance this emerging technology. The alliance brings together key players from the Chinese aerospace industry, including the China Academy of Space Technology, CASIC, Galactic Energy, the Chinese Academy of Sciences, and the Aerospace Information Research Institute.
At the heart of this development are several experimental satellites that have been operating in VLEO, a region of space that offers significant advantages for certain applications. For example, Shiyan-25 has maintained an altitude of approximately 270 kilometers since September 2023, while Qiankun-1 has been progressively lowering its orbit. These satellites are utilizing Hall electric propulsion, a type of electric propulsion that is well-suited for VLEO operations due to its high efficiency and ability to operate at low power levels.
VLEO is defined as an orbit with an altitude below 300 kilometers, and it presents both opportunities and challenges for satellite operators. On the one hand, VLEO offers improved resolution and faster revisit times for Earth observation applications, making it an attractive option for missions that require high-frequency imaging or monitoring of dynamic events. Additionally, VLEO can provide lower latency and higher data rates for communications satellites, enabling more responsive and interactive services.
However, operating in VLEO also poses significant technical challenges, particularly with regards to atmospheric drag and radiation exposure. Satellites in VLEO must contend with the residual atmosphere, which can cause them to experience significant drag and lose altitude over time. Furthermore, the radiation environment in VLEO is more intense than in higher orbits, requiring satellites to be designed with enhanced radiation protection.
Despite these challenges, China"s investment in VLEO technology is expected to have major implications for the broader aerospace industry. As the country continues to develop and demonstrate its capabilities in this area, it is likely to drive innovation and growth in related fields, such as Earth observation, communications, and satellite manufacturing. The formation of the national alliance is a key step towards realizing these goals, as it will facilitate collaboration and knowledge-sharing among industry stakeholders and help to accelerate the development of VLEO technology.
In the context of the global aerospace industry, China"s push into VLEO is part of a larger trend towards the development of more advanced and specialized satellite capabilities. As the demand for satellite-based services continues to grow, countries and companies are investing in new technologies and infrastructure to support a wide range of applications, from Earth observation and communications to navigation and scientific research. China"s efforts in VLEO are an important part of this landscape, and they will likely have significant implications for the future of the aerospace industry.