China is conducting a groundbreaking in-orbit refueling test with its Shijian-25 satellite, aiming to extend the operational lifespan of other spacecraft. This mission, reported by SpaceNews, marks a significant step towards enhancing the sustainability and efficiency of space operations.
The Shijian-25, launched in January, is designed to refuel and service satellites in geostationary orbit. This orbit allows satellites to maintain a fixed position relative to Earth. The test involves the Shijian-21 satellite, which previously completed a mission to relocate a defunct satellite to a "graveyard orbit."
The two Chinese satellites, monitored by U.S. counterparts, have been maneuvering to close the distance between them. The planned docking and refueling procedure, expected to begin on Wednesday, will test the feasibility of transferring fuel in space. If successful, the Shijian-25 will transfer 313 pounds of hydrazine to Shijian-21, potentially extending its service life by eight years.
This innovation could revolutionize space operations by significantly prolonging the lifespan of satellites. It also reduces the need for costly replacements and minimizes space debris. This technology is similar to the one planned by Northrop Grumman, which is launching its Mission Robotic Vehicle next year to conduct similar servicing of U.S. satellites and spacecraft.
The successful implementation of in-orbit refueling has broad implications for the space industry. It could lead to more sustainable space practices and foster international collaboration in satellite servicing technologies. This advancement represents a major step forward in the responsible and efficient utilization of space resources.