During the test, NASA attempted a 'kinder and gentler' approach using lower pressure to fill the 322-foot-tall SLS rocket with thousands of gallons of cryogenic fuel.
CAPE CANAVERAL, Fla.NASA encountered some trouble early in the day Wednesday as the space agency tested to determine if a fuel leak on the Artemis I rocket was fixed. Still, engineers were able to problem-solve and move forward with the tanking test that NASA managers are calling successful.
During the test, NASA attempted a "kinder and gentler" approach using lower pressure to fill the 322-foot-tall SLS rocket with thousands of gallons of cryogenic fuel. The first hiccup occurred when the team moved to the fast-fill stage of liquid hydrogen. NASA communications representative Derrol Nail said a 7% leak was detected, much higher than the 4% safety limit. as during the Sept. 3 launch attempt.
Just before 4 p.m., the rocket was fully fueled, and the liquid hydrogen tank was pressurized to pre-flight levels as it would be on an actual launch day. Another hydrogen leak appeared toward the end of the test above the conservative safety limit but this time in a different spot than the leak discovered earlier in the day.
During fueling on Sept. 3, the leak "spiked" to over 8%, KSC Exploration Ground Systems Program deputy manager Jeremy Parsons said. "Ultimately, we've mitigated everything that we can think of, and we will know in the 36 hours or so, or 48 hours, how effective those mitigations were," Belvins said Monday.
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