US EditionNASA Chief Vows to Solve SLS Rocket Fueling Issues Before Artemis III
NASA is analyzing data from a partial fueling test to verify repairs of hydrogen leaks in the Space Launch System before Artemis II’s earliest March launch.
- On Feb. 12, NASA conducted a partial fueling test to assess newly replaced seals, and engineers are reviewing data from core-stage interfaces tied to leaks ahead of March 3, 2026 launch opportunities.
- After leaks during a Feb. 2 wet dress rehearsal, NASA engineering teams replaced seals in the SLS propellant filling interface, but leaks resurfaced earlier this month, prompting verification tests.
- Engineers reported ground support equipment problems that reduced hydrogen flow during the confidence test, but NASA test operators collected data at the leaking interfaces and will replace a suspected clogged filter this month.
- Schedule pressure rises because delays would add to an already challenged testing timeline, and missing the early March launch window would force rolling the rocket back to the Vehicle Assembly Building to refresh its flight-termination system.
- NASA and Boeing have not built a full-size core-stage test model, and some cryogenic interactions cannot be fully tested until the rocket is assembled on the pad, with plans to cryoproof vehicles before Artemis III and redesign propellant interfaces.
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Space News
Los Angeles Weekly TimesNASA continues SLS hydrogen leak tests
A NASA test to confirm repairs to seals in the Space Launch System’s liquid hydrogen fueling system was only partially successful because of problems with ground equipment. The post NASA continues SLS hydrogen leak tests appeared first on SpaceNews.
NASA runs lunar mission Artemis IIs vehicle confidence test - The Tribune
The statement read, 'As part of robustly testing the vehicle prior to flight, NASA engineers are reviewing data after a confidence test Feb. 12, in which operators partially filled the SLS (Space Launch System) core stage liquid hydrogen tank to assess newly replaced seals in an area used to fill the rocket with propellant.'
NASA runs lunar mission Artemis II's vehicle confidence test
The statement read, "As part of robustly testing the vehicle prior to flight, NASA engineers are reviewing data after a confidence test Feb. 12, in which operators partially filled the SLS (Space Launch System) core stage liquid hydrogen tank to assess newly replaced seals in an area used to fill the rocket with propellant."
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