Long March 7A makes successful return after maiden failure as it launches Shiyan 9

by | Mar 12, 2021 | China, Launches, Military space, Satellites, Seradata News

China launched a Long March 7A vehicle carrying the Shiyan 9 satellite into GEO at 1751 GMT on 11 March from the Wenchang Space Launch Site, Hainan Island. The Shiyan 9’s mission is believed to be imaging the Earth from Geostationary Earth Orbit (GEO). The satellite was delivered into a 35,837 x 250 km Geosynchronous Transfer Orbit (GTO) inclined at 19.5 degrees on its way to this final location.

Long March 7A launches successfully on its second flight. Courtesy: Xinhua

This was a successful reflight of the Long March 7A after failure on its maiden flight in March 2020. That launch failure, which lost the TJS-6 communications/early warning satellite, was caused by a suspected failure on the rocket’s second stage 52 seconds after lift-off.

With a lift-off mass of 573 tonnes, the 60.1m tall Long March 7A rocket can carry 7 metric tons to GTO. This compares with 5.5 metric tons for the Long March 3B GTO workhorse that the new rocket is set to replace. In fact, part of the Long March 3B lives on as the cryogenic Liquid Hydrogen/LOx (Liquid Oxygen) upper stage of the Long March 7A, whose 3.35 m diameter core and four 2.25 m diameter boosters use Kerosene and LOx (liquid Oxygen) as their propellants.

Phil Hylands contributed to this story.



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