First available launch date in late August is still a possibility, NASA managers say.
When the Artemis-1 test launch does happen, SLS will launch the Orion spacecraft without astronauts to the moon. The spacecraft will orbit the moon before returning to Earth, splashing down in the Pacific Ocean. Following the test flight, NASA will launch astronauts on Orion on a similar orbital test flight.Weeks of work ahead before launch
NASA Exploration Ground Systems Program senior vehicle operations manager Cliff Lanham estimated 6 to 8 weeks of work lay ahead once the SLS is back inside the hangar. Most of those objectives had previously been validated through testing before reaching the launchpad. Had it been launch day, Weber said teams hadn't found anything that would have stopped a liftoff.The previous three wet dress rehearsal attempts were halted before the rocket was fully fueled due to several hardware issues, including a liquid hydrogen leak.
When a measurement is masked, the launch computer is still monitoring it, but it won't stop the countdown, explained Weber.Hydrogen leaks were also a reoccurring problem for the Space Shuttle Program, leading to launch scrubs and delays over the 30-year program.
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