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The Artemis I Mega Moon rocket is ready to refuel.
The fourth attempt of the final pre-missile test began Saturday, and the rocket’s fuel is expected to begin Monday morning.
The crucial test, called the wet suit rehearsal, simulates every stage of the launch without the rocket leaving the launch pad at the Kennedy Space Center in Florida.
The process involves loading Supercold propulsion, launching a full countdown simulation, resetting the countdown clock and filtering the rocket tanks.
The results of the wet dress rehearsal will determine when the uncrewed Artemis I will begin the process of going beyond the moon and returning to Earth. The mission will launch NASA’s Artemis project, which will return humans to the moon and land the first woman and first person on the lunar surface in 2025.
The previous three attempts at wet dress rehearsal in April failed, ending before the rocket was fully loaded due to various leaks. NASA later said that these were fixed.
NASA team rolled the 322-foot (98-meter-high) Artemis I rocket, including the space launch system and Orion spacecraft, to the launch pad at the Kennedy Space Center in Florida on June 6.
The wet dress rehearsal began at 5pm and on Saturday “Call to Stations” – all teams involved in the mission were told to come to their consoles and begin the test and begin the two-day countdown. .
Over the weekend preparations will begin to load the Artemis crew into the center and upper stages of the rocket.
Currently there is a live view of the rocket NASA websiteWith intermittent commentary.
Tanking was halted Monday morning due to a problem identified in the backup supply of gaseous nitrogen. The release panel replaced the valve that caused the problem. In order to ensure that the backup supply works as expected, it has been converted into the primary supply for today’s test.
ET stopped at 9:28 p.m. Liquid oxygen and liquid hydrogen are cooled to minus 297 degrees Fahrenheit (minus 182 degrees Celsius) to fill the tanks. Ventilation is visible when the tanks are full.
The two-hour test window will begin later, with the Artemis team targeting the first countdown to 4:38 pm ET. Due to tank delay.
First, the team members Go through the countdown for 33 seconds before starting and stop the cycle. The clock will be reset; The countdown will then restart and run for about 10 seconds before a launch occurs.
“During the test, the team may have the necessary countdown to check the conditions before restarting the countdown or extend it beyond the test window if necessary, if further evidence allows,” an update on NASA’s website states.
Charlie Blackwell-Thompson, Artemis launch director of NASA’s Exploration Ground Systems program, told a news conference Wednesday that previous wet clothing rehearsal efforts had already completed several objectives to prepare the rocket for launch.
“We hope to complete them by this time and get cryogenic loading operations with terminal numbers,” he said. “Our team is ready to go, and we look forward to returning to this test.”
From August 23 to August 29, from September 2 to September 6, the mission team is looking into possible launch windows for sending Artemis I to the moon in late summer. And beyond.
Once the Artemis rocket stack has completed its wet suit rehearsal, it will return to the Space Center’s vehicle assembly building to wait for Missile Day.
The Artemis team has a long history behind the rigorous testing of new systems before launch, and faces many experiences, including the Apollo and Shuttle-time teams, including numerous trial attempts and delays.
“Managing and delivering and delivering us and our contractors is the fulfillment of the objectives of Air Testing (Artemis I) and Artemis I. The project,” Jim Free, co-executive director of NASA’s Exploration Systems Development Mission Directorate, told a news conference last week. .