NASA finally acknowledges the elephant in the room with the SLS rocket
“You know, you’re right, the flight rate—three years is a long time.”
TL;DR
- The Space Launch System (SLS) rocket program is over a decade old, characterized by high costs and slow progress.
- To date, the program has cost US taxpayers over $30 billion.
- The Artemis I mission launch in November 2022 followed multiple delays and failed fueling tests due to hydrogen leaks.
- A recent wet-dress rehearsal for the Artemis II mission was aborted due to a significant hydrogen leak, similar to issues seen with Artemis I.
- NASA has attempted mitigation strategies for the leaks, but they have not fully resolved the problem.
- The Artemis II mission, which was initially planned for February, is now targeted for no earlier than March.
- Officials cite the complexity of the hydrogen interface and limitations in ground testing realism as reasons for the persistent leaks.
- The program's low flight rate exacerbates operational costs and safety concerns, making each launch an experimental procedure.
- NASA's new administrator, Jared Isaacman, acknowledged the low flight rate as a topic for discussion.
- Private competitors like SpaceX's Starship and Blue Origin's New Glenn are advancing more rapidly.
- NASA's Associate Administrator Amit Kshatriya stated that each SLS launch is experimental due to the bespoke components and the need to characterize the system's behavior with cryogens.