Chinese space engineers have identified the fault that caused the failure of the second flight of their country’s largest space launcher, Long March 5, a problem that appears to be pushing back the mission schedule by about a year. The cause of the failure was simply a manufacturing defect in one of the two YF-77 hydrogen-burning engines of the core first stage, says a source close to the Chinese industry. The fault was quickly pinned down, says that source, who adds there was nothing ...


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