New report says SLS rocket managers concerned about fuel leaks

Enlarge / Technicians at NASA’s Michoud Assembly Facility in New Orleans moved the Space Launch System's liquid hydrogen tank from the factory to the dock, where it was loaded onto the Pegasus barge on Dec. 14, 2018. (credit: NASA/Steven Seipel)

Every year, the US Government Accountability Office releases a report that assesses NASA's major projects. Typically, this GAO report summarizes each project and provides some basic information about schedule, cost, and concerns regarding the space agency's work.

However, the new "Assessments of Major NASA Projects" report released on Wednesday contains what seems to be an entirely new bit of information about the Space Launch System rocket NASA is developing for deep space exploration. The report asserts that engineers at NASA and the SLS rocket's core-stage contractor, Boeing, are concerned about fuel leaks.

Earlier this year, NASA moved the big rocket's core stage to a test site at Stennis Space Center in southern Mississippi. Before the COVID-19 pandemic temporarily halted work, NASA and Boeing teams were working toward a critical summer exercise. During this "green run" test, the clamped-down rocket will ignite its engines and burn for about eight minutes to simulate an ascent into orbit.

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