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What is the International Space Station’s weakest link?
Mark Mulqueen, ISS vehicle director for Boeing Co., said keeping the station’s environmental control and life support systems, or ECLSS, functioning over the next decade will likely be engineers’ toughest challenge. “I don’t think it’s sparing or the structure to get to 2020,” Mulqueen said. “It’s probably continued refinement of how we successfuly operate our ECLSS system on-orbit. There has been a lot of effort going into understanding that.”
The article outlines a number of other areas of concern, none of which appear to be serious, for now, but could be a problem as the years pass.