China Completes 15th Space Launch of 2025 with Tianlian II-04 Satellite

China conducted its 15th space launch of the year with the Long March 3B rocket, deploying the Tianlian II-04 satellite. This satellite is part of China’s second-generation data relay system, increasing capabilities over the first generation. The Long March 3B remains a reliable workhorse for launching various payloads into orbit.

On March 26, 2025, China successfully launched a relay satellite from the Xichang Satellite Launch Center in Sichuan province. A Long March 3B carrier rocket lifted off at 11:55 PM, deploying the Tianlian II-04 satellite into orbit. This launch represents China’s 15th space mission of the year and marks the 565th flight of the Long March rocket family, according to the China Aerospace Science and Technology Corp.

The Tianlian II-04 satellite, developed by the China Academy of Space Technology, is designed to provide telemetry, flight control, and data relay services for manned spacecraft, remote-sensing satellites, and the Tiangong space station. It is the fourth satellite in the Tianlian II series, a second-generation network of data relay satellites, with the first being launched in March 2019.

China’s first generation of data relay satellites, known as Tianlian I, includes five satellites, with the first launched in April 2008. These satellites have played crucial roles in various space missions, facilitating rendezvous and docking for the country’s manned spaceflights. Notably, the Tianlian II series offers greater capabilities, increased payload capacity, and extended operational lifespans compared to its predecessor.

The Long March 3B, developed by the China Academy of Launch Vehicle Technology, is widely deployed in China’s space missions and is recognized for its reliability. This rocket is particularly suited for launching satellites into geostationary transfer orbits, with a payload capacity of up to 5.5 tons, and can also deliver spacecraft to various other orbits, including medium-Earth and lunar transfer orbits.

In conclusion, China’s recent rocket launch highlights the nation’s ongoing advancements in space technology. The Tianlian II-04 satellite enhances data relay capabilities for critical space operations, reflecting improvements over previous generations. The Long March 3B rocket’s reliability further underpins China’s commitment to expanding its presence in space exploration.

Original Source: www.ecns.cn