Enlarge / EUS panel test weld at the Michoud Assembly Facility on Tuesday, February 9, 2021. (credit: Michael DeMocker/NASA)
The NASA program to develop a new upper stage for the Space Launch System rocket is seven years behind schedule and significantly over budget, a new report from the space agency’s inspector general finds. However, beyond these headline numbers, there is also some eye-opening information about the project’s prime contractor, Boeing, and its poor quality control practices.
The new Exploration Upper Stage, a more powerful second stage for the SLS rocket that made its debut in late 2022, is viewed by NASA as a key piece of its Artemis program to return humans to the Moon. The current plan calls for the use of this new upper stage beginning with the second lunar landing, the Artemis IV mission, currently scheduled for 2028. In NASA parlance, the upgraded version of the SLS rocket is known as Block 1B.
However, for many reasons—including the readiness of lunar landers, Lunar Gateway hardware, a new mobile launch tower, and more—NASA is unlikely to hold that date. Now, based on information in this new report, we can probably add the Exploration Upper Stage to the list.
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