Artemis II's Orion spacecraft uses a multi-layered fault tolerance architecture with eight redundant CPUs (four Flight Control Modules, each containing self-checking processor pairs) running synchronized flight software in parallel. The system employs fail-silent design with automatic error detection, triple-modular redundant memory, and deterministic clock synchronization; it can survive loss of three FCMs in 22 seconds. A completely independent Backup Flight Software system on different hardware and OS provides protection against common-mode failures.
Safety
Artemis II Fault Tolerance
Artemis II's Orion achieves mission-critical reliability through eight redundant CPUs in four self-checking Flight Control Modules running synchronized software in parallel, backed by a completely independent Backup Flight Software system protecting against common-mode failures.
Friday, May 1, 2026 12:00 PM UTC2 MIN READSOURCE: Hacker NewsBY sys://pipeline
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