NASA’s moon rocket returns to workshop after failed test

NASA’s moon rocket returns to workshop after failed test

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NASA’s moon rocket returns to workshop after failed test

A SpaceX’s Falcon 9 rocket carrying the Crew Dragon spacecraft is launched at NASA’s Kennedy Space Center in Florida, the United States, April 8, 2022. NASA, Axiom Space, and SpaceX launched a first private astronaut mission to the International Space Station on Friday

NASA’s Space Launch System rocket is heading back to its assembly building for repairs next week, pushing the earliest possible launch date for its uncrewed test flight to the moon to later in 2022’s summer, officials said Monday.

Since April 1 the space agency has been unsuccessfully attempting a key “wet dress rehearsal” test, so dubbed because it involves loading liquid propellant.

The procedure is meant as a run-through of launch operations, including a final countdown to within 10 seconds before blast-off, but without actually firing the engines. But NASA teams have encountered several technical hitches.

These included a leak involving flammable liquid hydrogen, a faulty valve that prevented fueling of the upper stage and running low on supply of nitrogen that is used to purge oxygen from the rocket prior to tanking operations for safety reasons.

The rocket, which is 98 meters tall with the Orion crew capsule fixed on top, will begin its slow journey back from Kennedy Space Center’s Launch Complex 39B to the vehicle assembly building on April 26, where it will be repaired.

Asked what this might mean for the earliest opportunity to launch the Artemis-1 test flight to the moon and back, senior official Tom Whitmeyer said: “I think the early June window would be challenging.”

NASA had previously envisaged a test flight as early as May. There are subsequent launch windows in July and in August. These depend on factors like the relative positions of the Earth and moon, as well as how long the rocket will have to fly in an eclipse, since it requires the sun to keep it powered and thermally regulated.