Will the massive moon-bound rocket finally be cleared for takeoff?
322-foot-tall SLS
, as well as the Orion capsule and mobile launcher, first made their way to the launch pad, NASA faced a series of headaches, preventing it from going ahead with its wet dress rehearsal. The goal was to fill the core and upper stage with 730,000 gallons of super-cooled liquid hydrogen and liquid oxygen and perform a simulated countdown without igniting the engines.
Pressure and valve issues prevented the first and second attempts from going ahead before NASA officials decided to roll the rocket back to the Vehicle Assembly Building .Crucially, the extra time at VAB allowed NASA to figure out why 3-inch check valve in the upper stage was malfunctioning on that pad. It also allowed third-party supplier Air Liquide enough time to upgrade its supply lines to provide the gaseous nitrogen that is vital to security on the pad, as it reduces the risk of fire.
, which will be used for NASA's Artemis III mission, could perform its orbital maiden flight around the same time., with the latest taking place between December 9-23 later this year. All of these launch windows are set during periods in which the Earth and moon are ideally aligned.
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