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Teams concluded today’s wet dress rehearsal test at approximately 5:10 p.m. EDT after observing a liquid hydrogen (LH2) leak on the tail service mast umbilical, which is located at the base of the mobile launcher and connects to the rocket’s core stage. The l...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
While loading liquid hydrogen (LH2) on the rocket’s core stage earlier this afternoon, engineers detected a leak on the tail service mast , which is located at the base of the mobile launcher and connects to the core stage. Though engineers stopped loading LH...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Following the completion of slow fill for liquid hydrogen (LH2), teams encountered an issue when they started fast fill operations for LH2. After fast fill on LH2 began, a surge in pressure automatically stopped the flow of liquid hydrogen. Teams are working...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
After troubleshooting an issue with the temperature of liquid oxygen during early stages of propellant loading into the rocket’s core stage, launch controllers have resumed operations. Teams performed chill down operations again before liquid oxygen began flo...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Liquid oxygen loading into the core stage was automatically halted near the beginning of slow fill operations when temperature readings on the propellant showed it was warmer than intended. The rocket is in a safe configuration while teams troubleshoot and de...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The launch control team has begun chill down operations and resumed the countdown clock ahead of flowing super cold liquid oxygen (LOX) into the core stage tank. The new T-0 time for today’s test is 3:57 p.m. EDT for the first of the two terminal count runs f...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
At approximately 8:05 a.m. EDT, the launch director gave the “go” to start tanking operations. The countdown will resume at 8:47 a.m. EDT at T-6 hours, 40 minutes. Tanking begins with chilling down the liquid oxygen lines for the core stage. In sequential fas...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Teams have extended the current hold in the countdown beyond the planned 1.5 hours. Supply has been reestablished of gaseous nitrogen used to purge oxygen from the rocket prior to tanking operations to ensure a safe environment for propellant loading, but tea...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The mission management team chair has given a “go” to proceed with tanking the rocket for the Artemis I wet dress rehearsal test, pending resolution of an issue with an outage at an off-site vendor of gaseous nitrogen used inside the rocket before propellant...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The Space Launch System rocket’s interim cryogenic propulsion stage (ICPS) and boosters were powered up overnight. Teams are in the process of clearing all non-essential personnel from the launch pad area in preparation for propellant loading operations. At 6...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Final preparations on the umbilicals to ensure connectivity between the mobile launcher, the Space Launch System rocket and Orion spacecraft were completed this evening. The umbilicals provide power, communications, coolant, and fuel to different parts of the...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The mission management team for Artemis I met this morning to review the status of operations and continues to press ahead toward terminal countdown for the wet dress rehearsal test. Meteorologists with the U.S. Space Force Space Launch Delta 45 currently pre...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Overnight, launch controllers powered up the Orion spacecraft and the Space Launch System rocket’s core stage. Communications links between Orion and the Mission Control Center at Johnson Space Center in Houston were verified, and preparations of the four RS-...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
At approximately 5 p.m. EDT today, the launch team arrived at their stations inside the Launch Control Center at NASA’s Kennedy Space Center in Florida. The countdown will begin 30 minutes later at 5:30 p.m. or L-45 hours, 10 minutes before the initial target...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
NASA is planning to proceed with a modified wet dress rehearsal, primarily focused on tanking the core stage, and minimal propellant operations on the interim cryogenic propulsion stage (ICPS) with the ground systems at Kennedy. Due to the changes in loading...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
In continued preparations for the Artemis I wet dress rehearsal test, with tanking targeted for Monday, teams encountered an issue maintaining helium purge pressure on the upper stage engine after change-out of a regulator on the mobile launcher. The RL10 eng...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Teams are preparing for the next attempt of the Artemis I wet dress rehearsal, pending range availability and restoration of propellants and gases during the test. Through the past two test runs April 3 and 4, engineers accomplished several test objectives th...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The Artemis I team has ended today’s attempt at the wet dress rehearsal test at 5 p.m. The countdown ended after partially loading liquid oxygen into the Space Launch System core stage tank. This provided the teams a valuable opportunity for training and to m...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The countdown for the wet dress rehearsal has resumed at 10:52 a.m. EDT and clocks have picked back up at T-6 hours, 40 minutes on the clock (L-7 hours, 10 minutes). A new planned T-0 of 6:02 p.m. has been established. An earlier issue with an outage with the...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
At approximately 7:40 a.m. EDT, the mission management team chair gave the “go” to proceed with tanking the rocket for the Artemis I wet dress rehearsal test. Later in the countdown the Launch Director will give the “go” to begin the tanking process. Meteorol...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
NASA is targeting Monday, April 4, to resume the Artemis I wet dress rehearsal test. The test was stopped Sunday, April 3 prior to tanking due to loss of ability to pressurize the mobile launcher using two fans. The fans are needed to provide positive pressur...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
Teams have decided to scrub tanking operations for the wet dress rehearsal due to loss of ability to pressurize the mobile launcher. The fans are needed to provide positive pressure to the enclosed areas within the mobile launcher and keep out hazardous gases...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
At approximately 6:45 a.m. EDT, the launch director and mission management team chair gave the “go” to begin tanking the rocket. Meteorologists with Space Launch Delta 45 said there were no weather violations for the test. All elements are powered up and team...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
The Artemis I launch team continues to press ahead through the wet dress rehearsal countdown. During the overnight hours after determining four lightning strikes at Launch Pad 39B would not stop the countdown from continuing, the interim cryogenic propulsion...
Why shown: TIER1 nasa primary article; mission mapped to Artemis I; authority-tier ranked source.
