NASA’s latest moon rocket faced another setback recently, likely pushing back astronauts’ first lunar voyage in decades to the spring season. The space agency encountered a new issue with the flow of helium to the rocket’s upper stage, crucial for engine purging and fuel tank pressurization. This problem emerged just a day after NASA had set March 6 as the target date for the Artemis II mission, humanity’s initial moon journey in over 50 years.
Jared Isaacman, NASA’s administrator, mentioned that a malfunctioning filter, valve, or connection plate might be causing the halted helium flow. The only way to address this issue is within the Vehicle Assembly Building at the Kennedy Space Center in Cape Canaveral, Florida. As a result, preparations for rollback are underway, ruling out the possibility of a March launch. NASA’s next potential launch windows would be in early or late April.
The earlier hydrogen fuel leaks that affected a countdown rehearsal for the Space Launch System rocket are unrelated to this helium complication. The four astronauts slated for the Artemis II mission had entered a two-week quarantine to ensure their health ahead of the flight. Despite a recent successful fuelling test with minimal leaks, the lunar fly-around mission has faced delays.
The disrupted helium flow pertains to the SLS rocket’s interim cryogenic propulsion stage, essential for positioning the Orion crew capsule in the correct high-altitude orbit for inspection post-launch. Following this, the stage is designed to detach from Orion and act as a docking practice target for the crew, aiding in preparations for future moon missions.
While NASA’s Apollo program witnessed 24 astronauts journey to the moon between 1968 and 1972, the newer Artemis program has only conducted one crewless lunar-orbiting test flight in 2022. Despite facing challenges like hydrogen fuel leaks during the initial test flight, a crewed moon landing under Artemis is still a few years away.
