Over the 50 years since its founding, the Xi'an Satellite Control Center has successfully resolved major faults in over 10 satellites, saving the country billions yuan in possible losses, the center said Wednesday.

Founded in 1967, the center is tasked with routine telemetry, orbit control and breakdown diagnosis and maintenance of satellites.

In one case, the center successfully sent the communications satellite Zhongxing-9A into correct orbit, after it had failed to enter its preset orbit after launch.

The satellite was launched on June 19, 2017. Abnormal performance during the launch stage had caused the satellite to orbit about 16,420 km above the Earth's surface while its preset orbit was at 41,991 km above the Earth, according to Yang Yong'an, senior engineer at the center.

Over the following 16 days, staff members at the center carried out consultations with the satellite's designer and manufacturer and formulated a solution.

After 10 orbit adjustments, the satellite finally entered the preset orbit.@ In another case, the maritime satellite Haiyang-2, launched in August, 2011, began to fail soon after entering orbit and was at risk of disintegrating.

Fan Henghai, chief technician at the time, worked with other staff members for 45 days to successfully fix the problem.

The center currently monitors and manages over 100 Chinese spacecraft in orbit.

Over the last three years, the center has debugged hundreds of satellite glitches, according to Li Weiping, senior engineer at the center.

Source: Xinhua News

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Chinese satellite Zhongxing-9A enters preset orbit
Beijing (XNA) Jul 07, 2017
The communications satellite Zhongxing-9A has entered its preset orbit over two weeks after its launch on June 19. Abnormal performance was identified during the third phase of the Long March-3B launch, which failed to deliver the satellite as planned. The satellite conducted 10 orbit adjustments with its onboard thrusters and Wednesday reached its preset orbit at 101.4 degrees east ... read more

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China National Space Administration
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