The NASA launch director halted today’s Artemis I launch attempt at approximately 14:34 CEST (13:34 BST). The Space Launch System rocket and Orion spacecraft are stable and remain safe. Launch controllers were continuing to evaluate why a test to get the RS-25 engines on the bottom of the core stage to the proper temperature range for liftoff was not successful, and ran out of time in the two-hour launch window. Engineers are continuing to gather additional data.
No launch 29 August
Automated transfer vehicle
Automated Transfer Vehicle page
ATV blog archiveOrion service module pictures
NASA Orion page
NASA Artemis
Airbus Orion page
Discussion: 2 comments
What is RS-25 engine proper temperature range for liftoff and how it will be controlled ?
The engines must be at a temperature of at least -251°C with engine 3 showing higher temperatures than the other engines on the first Artemis I launch attempt.