Watch CNN live Saturday afternoon from Kennedy Space Center in Florida. Space correspondent Christine Fisher, along with his team of experts, provide a quick report from the launch.
Shortly before 5:00 a.m. ET, mission managers received a weather briefing and decided to proceed with propellant loading into the rocket. The countdown clock resumed at 7:07 AM ET.
There is currently a 30 minute delay due to a detected liquid hydrogen leak in the quick disconnect cavity. The team turned off the flow of propellant into the rocket’s core stage. This is a different leak than the one that came before Monday’s scrubbed launch.
The launch controller tries to warm up the line and seal it tightly. Meanwhile, liquid oxygen continues to flow through the core stage.
According to meteorologist Melody Lovin, there is a 60% chance of having favorable weather conditions for launch, which could increase to 80% towards the end of the window.
The Artemis I stack, which includes the Space Launch Systems rocket and the Orion spacecraft, is located at Launchpad 39B at the Kennedy Space Center in Cape Canaveral, Florida.
The Artemis I mission is just the beginning of a program aimed at returning humans to the Moon and ultimately landing a manned mission on Mars.
If the mission starts on Saturday, it will orbit the Moon and land in the Pacific Ocean on October 11th. Artemis I Mission She still has the opportunity to back up starting September 5th.
In recent days, the launch team has taken time to address issues such as a hydrogen leak, which occurred ahead of Monday’s scheduled launch before it was removed. The team also completed a risk assessment of foam cracks that occurred as well as engine conditioning issues, according to NASA officials.
Both are considered acceptable risks heading into the launch countdown, according to Artemis mission manager Mike Sarafin.
On Monday, sensors in one of the rocket’s four RS-25 engines, identified as engine #3, indicated that the engine failed to reach the proper temperature range required to start the engine during takeoff. .
The engine must be thermally conditioned before the cryogenic propellant flows prior to liftoff. To protect the engine from thermal shock, the launch controller gradually increases the pressure of the core stage liquid hydrogen tank several hours before launch, delivering a small amount of liquid hydrogen to the engine. This is known as “bleeding”.
The team then determined it was a faulty sensor that provided readings. Space Launch will ignore bad sensors going forward, according to his engineer John Blevins, chief of his system.
The bleeding is expected to occur around 8:00 a.m. ET, according to Charlie Blackwell-Thompson, Artemis launch director for NASA’s Exploration Ground Systems Program.
After Artemis 1’s launch, Orion’s journey lasts 37 days to the Moon, circles the Moon and returns to Earth. Travel a total of 1.3 million miles (2.1 million kilometers).
The passenger list does not include humans, but it does have passengers. Three mannequins and a plush Snoopy ride Orion.
We expect to see an Earthrise view similar to the one first shared by the 1968 Apollo 8 mission, but with much better cameras and technology.