| name | eclss-assessment |
| description | Perform Environmental Control and Life Support System (ECLSS) sizing and analysis for crewed spacecraft, stations, and habitats. Use this skill to size O₂ generation, CO₂ removal, water recovery, thermal/humidity control, and habitable volume. Trigger for "life support," "ECLSS," "crew systems," "O2 generation," "CO2 scrubbing," "water recycling," "habitable volume," "cabin pressure," or "crew consumables." |
ECLSS Assessment Skill (Life Support)
Read CONVENTIONS.md at the repo root before proceeding.
This skill sizes the Environmental Control and Life Support System for crewed vehicles and habitats. ECLSS is the system that keeps humans alive — it manages atmosphere, water, waste, and thermal comfort inside the pressurized volume.
Before You Begin
Ask the user (if not already known):
- Crew size and mission duration? (These two numbers drive everything)
- Open-loop or closed-loop? (Open = consumables carried from Earth; Closed = recycling. Short missions (<2 weeks) typically open-loop; long missions require closure.)
- Cabin atmosphere? (Sea-level: 101.3 kPa, 21% O₂ / 79% N₂. Low-pressure: 55.2 kPa, 34% O₂ — reduces structural mass but changes fire risk. EVA-compatible: 56.5 kPa, 34% O₂ — eliminates pre-breathe.)
- Gravity environment? (Microgravity, partial-g lunar/Mars, or sustained-g rotation — affects fluid management, fire behavior, and ECLSS hardware selection.)
- What design phase?
Applicable Phases
- Primary: Phase A (consumables vs. regenerative trade), Phase B (subsystem sizing)
- Supporting: Phase C (detailed design), Phase D (crew qualification testing)
Metabolic Reference Rates (Per Crew-Member Per Day)
