NASA nears final countdown to Artemis I — watch live | Science | news

Tomorrow morning’s launch attempt was originally scheduled for Monday until the space agency decided to allow more time for recovery after Hurricane Nicole made landfall on the Florida coast late on November 9.

The delay was relatively minor compared to what Hurricane Ian brought in late September, forcing NASA to return the SLS from the launch pad to its assembly building. .

The taller rocket is rated to withstand winds of up to 85 miles per hour — and while Nicole is nowhere near as powerful as its predecessor, the space agency called for the rocket to be left on the launch pad during recent stormy weather.

However, NASA explained that missing the Nov. 14 launch window was necessary to allow both employees to return to their families and homes during the hurricane and to inspect the rocket before attempting a launch.

Before the latest run of disruptive weather, NASA had already made two attempts to lift the SLS — the first on August 29 and the second on September 3.

The Attempt to start The engine was scrubbed after one of the rocket’s four main engines appeared to overheat during an engine bleed test.

However, the problem was later traced back to a “bad sensor” with a misleading reading.

A Liquid hydrogen continues to leak in the fuel lineMeanwhile, despite three attempts by engineers to resolve the issue, the second halted the mission.

Both of these issues were revisited in mid-September when NASA conducted “Cryogenic demonstration test”, which saw a practical tanking of SLS’s center and intermediate stages with more than 730,000 gallons of liquid hydrogen fuel.

“After encountering a hydrogen leak early in the loading process, engineers were able to fix the problem and continue planned operations,” the space agency said.

The measures included retesting the kick-start bleed test — in which a small amount of liquid hydrogen fuel is used to cool the four RS-25 engines at the base of the rocket’s center stage to 423F (217C) — which caused problems. First launch attempt.

The purpose of this is to ensure that the engines are not stressed unnecessarily while injecting the super cool fuel properly at launch.

Following the cryogenic demonstration test, NASA stated that “all purposes [were] met” — leading to hope that the SLS could successfully lift off in this latest attempt.

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