NASA Targets September 3 for Next Artemis I Moon Mission Launch Attempt



On Monday, August 29, 2022, as the launch countdown nears, a NASA helicopter flies past the agency's Space Launch System (SLS) rocket with the Orion spacecraft mounted atop the mobile launcher at Launch Pad 39B. NASA and Joel Kowsky

The launch of Artemis I will take place on Saturday, September 3 at 2:17 p.m. EDT (11:17 a.m. PDT), at the start of a two-hour window. The Space Launch System (SLS) rocket, the ground systems, and the Orion spacecraft are being tested together for the first time at NASA's Kennedy Space Center in Florida.

Mission management gathered on Tuesday, August 30, to examine data and create a future plan for handling problems that came up during a flight test launch attempt on August 29. The four RS-25 engines could not be chilled down to minus 420 degrees Fahrenheit during the launch attempt. Engine 3 in particular displayed higher temperatures compared to the other engines. Teams also detected a hydrogen leak on a component of the tail service mast umbilical quick disconnect, called the purge can. By manually modifying propellant flow rates, they were able to stop the leak.

NASA Artemis I Preflight SLS Orion On August 29, 2022, as the Artemis I launch teams loaded more than 700,000 gallons of cryogenic propellants including liquid hydrogen and liquid oxygen as the launch countdown advanced at NASA's Kennedy Space Center in Florida, the Space Launch System (SLS) rocket with the Orion spacecraft aboard could be seen at sunrise atop the mobile launcher at Launch Pad 39B. The Orion spacecraft, SLS rocket, and auxiliary ground systems will all be tested together for the first time during NASA's Artemis I flight test. NASA and Joel Kowsky

Teams will alter and rehearse propellant loading operations in the coming days to adhere to a process similar to what was carried out successfully during the Green Run at NASA's Stennis Space Center in Mississippi. The kick start bleed test, also known as the engine chill down test, would be carried out by the upgraded procedures around 30 to 45 minutes earlier in the countdown. This would take place during the core stage's liquid hydrogen fast fill phase.

Four RS-25 engines, which have been used for 135 shuttle missions, will propel NASA's new deep-space rocket, the Space Launch System (SLS). The engines now have new controllers and other SLS-related features. Engineers can follow an engine's flight history thanks to its distinctive identification number. Credit: Kevin Obrien, NASA/MSFC

Teams at Launch Pad 39B are also setting up platforms to provide engineers access to the purge can on the tail service mast umbilical. Once access has been established, experts will do any necessary evaluations and torque connecting points.

The U.S. Space Force Space Launch Delta 45's meteorologists forecast good weather for Saturday. Even though rain showers are anticipated, the launch window is only expected to see a few of them.

The mission management team expects to assemble on Thursday, September 1, to assess data and overall readiness.

By NASA 

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