Cabin atmosphere (ppO₂ / ppCO₂)
Ideal-gas cabin partial pressures from composition; optional closed-cabin metabolism without scrubber: ops intuition for air revitalization.
SIDUS educational calculator. Category crew. Tags: atmosphere, crew, Dragon, ECLSS, ISS, Soyuz. Pure SI. Not flight software.
Formula
p_i V = n_i R T · ppO₂ / ppCO₂
Ideal-gas cabin partial pressures
Primary sources
- NASA OCHMO CO₂ / metabolic technical briefs (NASA OCHMO): Crew metabolic loads and CO₂ exposure context for ECLSS educational models.
- NASA-STD-3001 (Human Spaceflight standards overview) (NASA): Human-system standards context (ppO₂ / atmosphere). SIDUS flags are educational. They are not flight-rule substitutes.
- ISS ECLSS overview literature (NASA ISS program (public summaries)): Public ISS life-support system context for educational O₂/CO₂/thermal models: not a flight-rule substitute.
How do AI agents use this tool?
Read /llms.txt or call https://sidus.tools/api/mcp. Open the interactive page for live SI inputs.