What is Artemis II’s fault-tolerant computer?

It's five RAD750 processors running TMR, voting on commands to survive radiation in deep space.

How does NASA build fault-tolerant systems?

Through hardware redundancy, isolated resources, and software validators—no single point of failure.

Will NASA's tech improve everyday computing?

Eventually, via data center reliability, but don't hold your breath for cheap rad-hard chips.

Artemis II's Computer: Triple Redundancy Against Cosmic Rays

A single cosmic ray can flip a bit and doom a mission. NASA's fix for Artemis II? A computer with three brains, voting in real-time to outvote errors.

theAIcatchup Apr 10, 2026 3 min read

Schematic of Artemis II Orion flight computer's triple-redundant processor architecture

⚡ Key Takeaways

Triple modular redundancy with 2-of-3 voting ensures faults don't cascade. 𝕏
Rad-hard PowerPC processors plus FDIR detect errors in milliseconds. 𝕏
Model-based engineering cuts software bugs; tested in particle accelerators. 𝕏

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#NASA Artemis II #fault-tolerant computing #rad-hard processors #radiation-hardened #radiation-hardened processors #space avionics #space hardware #space software #spacecraft avionics

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Originally reported by Reddit r/programming

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