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NASA conducts fourth SLS wet dress rehearsal
Posted: Sat, Jun 25, 2022, 12:19 PM ET (1619 GMT)
NASA nearly completed a countdown test of the Space Launch System Monday after dealing with several technical problems. The fourth wet dress rehearsal of the SLS made it to the T-29 second mark before computers stopped the countdown about 20 seconds before the planned cutoff. A leak in a "quick disconnect" fitting for a liquid hydrogen umbilical delayed the countdown for several hours, and controllers elected to proceed with the terminal countdown even though they could not stop the leak so they could collect as much data as possible. Several other issues cropped up during the test but were fixed. This fourth wet dress rehearsal got much closer to completion than the first three attempts in April, but NASA managers said it wasn't certain yet if they will need to perform another test or can proceed into preparations for a launch as soon as late August.
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