NASA’s Artemis I mega moon rocket will get one other prelaunch take a look at in June
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The essential take a look at, generally known as the moist gown rehearsal, simulates each stage of launch with out the rocket leaving the launchpad. This course of contains loading propellant, going by a full countdown simulating launch, resetting the countdown clock and draining the rocket tanks.
After three makes an attempt of the moist gown rehearsal in April, the rocket stack was rolled again into the Car Meeting Constructing on April 26 to deal with points that cropped up through the take a look at makes an attempt.
To date, the crew has been engaged on changing a defective test valve on the rocket’s higher stage that created a helium leak and repairing the supply of a tail service mast hydrogen leak. In the meantime, Air Liquide, which provides gaseous nitrogen to the launchpad, has been upgrading its pipeline configuration to higher help the testing and launch of Artemis I.
When inspecting the test valve, the crew discovered a small piece of rubber that prevented it from sealing accurately, stated Jim Free, affiliate administrator for NASA’s Exploration Methods Improvement Mission Directorate, throughout a information convention on Thursday.
No points have been discovered with the valve, and engineers are investigating the supply of the rubber because it wasn’t initially a part of the valve, Free stated. The crew has additionally narrowed down the potential causes for the hydrogen leak.
As soon as the rocket stack rolls again out to the launchpad in late Might, it’s going to take between 12 and 14 days earlier than the rocket can undergo one other moist gown rehearsal, which may happen in early to mid-June, Free stated.
“We have carried out a variety of work to get the rocket able to roll again out to the launchpad,” stated Cliff Lanham, senior car operations supervisor for NASA ‘s Exploration Floor Methods Program at Kennedy House Middle. “Stopping on the VAB is a pit cease to come back again in, do what we have to do and get again out to the pad as rapidly as potential. So we’re working laborious to fulfill that purpose.”
The Artemis crew is now taking a look at launch home windows for sending Artemis I on its journey to the moon in late summer time: between July 26 and August 9, August 23 to August 29 and September 2 to September 6.
“We additionally need to be practical and upfront with you that it might take multiple try and get the procedures the place we’d like them for a smoother launch rely that offers us the very best probability to creating our launch home windows,” Free stated.
As soon as the Artemis rocket stack completes its moist gown rehearsal, it’s going to roll again into the constructing to attend for launch day.
There’s a lengthy historical past behind the arduous course of to check new techniques earlier than launching a rocket, and what the Artemis crew is dealing with is much like what the Apollo and shuttle period groups skilled, together with a number of take a look at makes an attempt and delays earlier than launch.
The outcomes of the moist gown rehearsal will decide when the uncrewed Artemis I’ll launch on a mission that goes past the moon and returns to Earth. This mission will kick off NASA’s Artemis program, which is predicted to return people to the moon and land the primary girl and the primary particular person of colour on the lunar floor by 2025.
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