中国发射首颗高通量通信卫星

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　　Shijian-13, China’s first high-throughput communications satellite, was launched from Xichang Satellite Launch Center in southwest China’s Sichuan Province at 7:04 p.m. Wednesday.

　　The satellite, with a transfer capacity of 20 Gbps and a designed orbital life of 15 years, was carried into orbit by a Long March-3B carrier rocket, the 246th mission for Long March carrier rockets.

　　Shijian-13 has a higher message capacity than all of China’s previous communications satellites combined and will provide better Internet access in less-developed regions, as well as on planes and high-speed trains.

　　The launch is a milestone¹ for China’s communications satellite technology, said Tian Yulong, chief engineer of the State Administration of Science, Technology and Industry for National Defence.

　　Shijian-13 is the first Chinese satellite to be powered by electricity, potentially improving efficiency by as much as 10 times compared with those using chemicals as propellant, extending the satellite’s life and reducing launch weight, said Zhou Zhicheng, commander-in-chief of Shijian-13.

　　A large number of domestic components² have been used. It also has the first laser communications system installed on a Chinese high orbit satellite with a long lifespan.

　　The satellite and the rocket were designed by academies affiliated³ with the China Aerospace⁴ Science and Technology Corp., and the China Academy of Launch Vehicle Technology respectively.

　　China plans to launch six communications satellites this year. Shijian-18 will be put into orbit in June to test the DFH-5 satellite platform.

　　On April, 24, 1970, the launch of China’s first satellite Dongfanghong-1 marked the beginning of the country’s space endeavors, which currently feature 16 communication satellites.

　　By 2025, China will have 22 communication satellites, with five built on brand new designs, according to a medium-long term development plan for civilian⁵ space infrastructure⁶ released in 2015.

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