Chinese satellite experts are designing a new type of spacecraft that will be capable of moving a de-orbiting satellite back into its intended orbit, thus extending its period of service.
The China Academy of Space Technology, part of China Aerospace Science and Technology Corp, said in a statement that its engineers are conducting research and development on the proposed spacecraft that would help bring satellites that have run short on fuel or experienced technical problems back to their designed trajectories.
Normally, a satellite needs to periodically use up a certain amount of fuel to maintain its preset orbit. When its fuel runs down, the satellite often deviates from its designed path.
The new spacecraft is engineered to connect to a target satellite via robotic arms and then provide attitude control assistance and push the satellite back into its proper orbit, according to the academy.
Once it finishes a life-extension task with a satellite, the service spacecraft will undock with the target and autonomously fly toward the next satellite that requires assistance.
The spacecraft’s R&D will take about two years to complete. Once the vehicle enters service, it is expected to bring at least 10 years of extra operational time to multiple satellites, the academy said.
Hu Di, chief designer of the spacecraft, said that the vehicle will enjoy great commercial potential in the satellite industry.
“It will mainly be used to serve communications satellites operating in geostationary orbits about 36,000 kilometers above the ground because such satellites usually are very expensive and are important to people’s daily lives,” he explained. “If the target’s instruments remain in good condition, it will be able to continue working in the orbit for many years.”
According to Hu, there are about 150 communications satellites in service in geostationary orbits.
