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Artemis Delayed
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Last night NASA called off the launch of the Artemis 1 moon rocket due to an engine cooling malfunction.

Their next possible launch window be on September 2. Failing that there are windows until the 6th and after that not until the 19th.

If you're interested in the technical details:

The Space Launch System’s four RS-25 engines must be thermally conditioned before super cold propellant begins flowing through them for liftoff. Launch controllers condition them by increasing the pressure on the core stage liquid hydrogen tank to route, or “bleed” as it is often called, a portion of the approximately minus 423 F liquid hydrogen to the engines. Managers suspect the issue, seen on engine 3, is unlikely to be the result of a problem with the engine itself.

During the countdown, launch controllers worked through several additional issues, including storms in the area that delayed the start of propellant loading operations, a leak at the quick disconnect on the 8-inch line used to fill and drain core stage liquid hydrogen, and a hydrogen leak from a valve used to vent the propellant from the core stage intertank.

[ Main Image: Artemis I - Scrubbed August 29 launch. Credit: NASA via Twitter. ]


NASA. Artemis I. (viewed August 30, 2022)

NASA. Artiemis I Mission Availability 2022-2023 (EST/EDT). (viewed August 30, 2022)

NASA (August 29, 2022). Engineers Assess Data After Scrub, Mission Managers to Meet Tuesday Afternoon. NASA Artemis I Blog.

NASA [@NASA] (August 29, 2022). The launch of #Artemis I is no longer happening today as teams work through an issue with an engine bleed. Twitter.