All articles tagged with #hydrogen leak
NASA is conducting Artemis II's second wet dress rehearsal fueling at Kennedy Space Center to test cryogenic loading and prevent hydrogen leaks seen in the first test. Ground teams will load roughly 730,000 gallons of LH2 and LOX, with a go/no-go poll around 9:50 a.m. EST and fueling lasting into the afternoon; a successful test keeps Artemis II on track for a potential March 6 liftoff window.
NASA is running Artemis 2’s second wet dress rehearsal for the Space Launch System at Kennedy Space Center, with a nearly 50-hour countdown in progress toward a simulated 8:30 p.m. ET launch on Feb. 19 as teams fuel the rocket with more than 700,000 pounds of LH2 and LOX; after hydrogen leaks disrupted the first test, engineers replaced faulty ground equipment and are using inert nitrogen to reduce fire risk while preparing Orion and the core stage for a crewed Moon mission targeted for early March.
NASA plans a second wet dress rehearsal for Artemis 2's Space Launch System (SLS) on Feb. 19 after the initial fueling test on Feb. 2–3 was halted by a liquid hydrogen leak; teams will again load more than 730,000 gallons of LH2/LOX at Kennedy Space Center's Pad 39B and rehearse the countdown, fueling, and scrubs ahead of a potential March launch for four astronauts around the Moon.
NASA is fixing a hydrogen-fuel leak on the Space Launch System before the Artemis II countdown rehearsal, after a confidence test showed reduced fuel flow and a filter replacement is planned. The safety limit for hydrogen concentrations, raised to 16% from 4% since Artemis I, remains in effect based on test data. Artemis III will seek cryoproofing and redesigned propellant-loading interfaces; if Artemis II misses March, additional launch opportunities exist in April and May.
NASA halted the Artemis 2 wet dress rehearsal after hydrogen leaks were detected during the terminal countdown, marking a second such issue after Artemis 1. The initial leak during fast fill was addressed by warming a quick-disconnect seal; the later leak during core-stage pressurization is under investigation. NASA plans a second WDR to test fixes, with no launch in the current Feb. 11 window and the next opportunity set for March 6–11; there is no plan to roll the rocket back to the VAB. The test nonetheless yielded useful data, including operations with a larger LH2 storage tank and hatch closures, as Artemis 2 remains the first crewed lunar vicinity mission in more than 50 years.
NASA plans an on-pad repair of a hydrogen leak that halted Artemis II’s dress rehearsal, followed by another fueling test and a March launch window to send four astronauts around the Moon; officials say the fix can be performed at the pad and the team will validate the system with a second fueling before a liftoff in March.
NASA’s Artemis 2 wet dress rehearsal exposed persistent hydrogen leaks at the Space Launch System tail service mast, a problem that plagued Artemis 1. Engineers say leaks stem from bespoke cryogenic hardware and stresses from rollout; officials note the leak was stabilized to acceptable levels and a wealth of data was gathered, but it hasn’t been eliminated. The team postponed February’s window to March to allow pad-side fixes and further testing before a crewed lunar mission around the Moon.
NASA has postponed Artemis II from February to March after a hydrogen leak at the tail service mast umbilical halted a wet dress rehearsal; the countdown was stopped just before launch and engineers will conduct additional testing and repairs before the mission can launch in the March window (March 6–11). The four-astronaut crew remains in Houston during the delay.
NASA postponed Artemis II to March after a hydrogen leak scrubbed the wet dress rehearsal at Kennedy Space Center, delaying the first crewed around-the-M Moon flight in over 50 years; the test surfaced hydrogen-leak issues, a loose valve and audio dropouts, and NASA will review data and conduct a second dress rehearsal before setting a new launch window (earliest March 6).
NASA halted Artemis 2’s wet dress rehearsal after a liquid-hydrogen leak at the tail service mast umbilical caused the countdown to be terminated, even though fueling of the SLS stages was largely completed. With the issues under review, NASA is now aiming for a March launch window (potential dates March 6–9 or March 11) and has signaled that additional launch opportunities in April exist if needed, with a public briefing to explain the decision.
NASA’s Artemis II crewed lunar mission is pushed to March after a fueling test uncovered recurring hydrogen leaks at the rocket’s ground connections, halting the countdown and prompting a data review and a second Wet Dress Rehearsal. The earliest launch window is March 6, with the four astronauts in quarantine as NASA prioritizes safety before the first crewed lunar flight since 1972.