Science
SLS Core Stage Green Run WDR countdown ends early – Next steps considered – NASASpaceflight.com
NASA partially completed the Green Run Wet Dress Rehearsal (WDR) test of the Space Launch…
NASA partially completed the Green Run Wet Dress Rehearsal (WDR) test of the Space Launch System (SLS) Core Stage on the second attempt in the B-2 Test Stand at the Stennis Space Center. The test was again conducted in secrecy on 20 December, and the test team was able to fill the rocket stage with its liquid oxygen (LOX) and liquid hydrogen (LH2) propellants for the first time ever; however, a crucial, 10-minute long terminal countdown was aborted inside of the 5 minute mark when a valve failed…
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