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Hugues Henrion

Hugues Henrion

What a verifiable requirement actually looks like : an ECSS-E-ST-10-06 worked example
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What a verifiable requirement actually looks like : an ECSS-E-ST-10-06 worked example

Most requirement documents fail the same test: you cannot tell from reading the requirement alone whether it has been met. A worked example using two real mission documents — the ICON Level-2 PRD and the ESA MarcoPolo-R MRD — showing what ECSS-E-ST-10-06C actually demands in practice.
13 Apr 2026 6 min read
Why this blog exists

Why this blog exists

Systems engineering, structural analysis, and the discipline of building complex things correctly. Most engineering blogs are one of two things. Either a personal notebook where someone documents what they are learning week by week, or a corporate content channel dressed up as independent writing. This is neither. secondstage.space is
13 Apr 2026 1 min read
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