As information about Artemis II circulates in the news, the biggest question is what is coming next. After months of planning and a recent delay, the rocket is finally being moved to the launch pad from the Vehicle Assembly Building at the Kennedy Space Center in Florida. The current projected date is April 1, a date that seems tentative as the launch date has been pushed back multiple times. After a failed fueling rehearsal where NASA caught a hydrogen leak, the launch was delayed by weeks. Hydrogen leaks are a common issue in spaceflight. Liquid hydrogen must be stored at extremely low temperatures. Materials at that low of temperatures shrink. which can become a problem because hydrogen molecules can escape through tiny gaps. With this, even small issues can cause a leak, and it is especially possible with large quantities of hydrogen, as used to fuel a rocket. After this first setback, a helium system issue occurred during testing, forcing NASA to bring the rocket back to the Vehicle Assembly Building to be fixed. Helium is used to keep pressure inside the fuel tanks and ensure consistent properllant flow. So even though the helium isn’t the fuel itself, like the liquid hydrogen, it is critical in making sure the system runs the way it’s supposed to.
These two problems just go to show how launch timelines can change so quickly, but also show how capable engineers are in fixing issues that arise before launch. As for the Artemis II launch, testing failures have cut out March as a possible launch time frame and moved everything to April, at the earliest.
In Orbit 