L3-HAB-ATMO-PRES
CRITICAL
ENVIRONMENTAL
Level 3 · hardware
Pressure Control
Multi-Tank Pressure Regulation + N2 Makeup
Habitat pressure regulation maintaining 101 kPa total pressure with N2 makeup from L3-ISR-VOL-STORE.
Purpose
Habitat pressure regulation maintaining 101 kPa total pressure with N2 makeup from L3-ISR-VOL-STORE.
Context
Child of L2-HAB-ATMO within the Lunar Ark system
Principles
- ▸Total pressure target 101 kPa
- ▸ppO2 21 kPa + ppN2 79 kPa
- ▸N2 makeup from L3-ISR-VOL-STORE
- ▸Leak compensation via continuous makeup
- ▸Emergency repressurisation after MMOD breach
Typical implementations
- ▸ISS Atmosphere Control and Supply heritage
- ▸Apollo / Shuttle pressure control
- ▸Aerospace cabin pressure systems
Lunar considerations
- ▸Long-life pressure transducers
- ▸Tight leak rate (per L3-DST-SEAL-HERM)
- ▸Coordination with L3-DST-LOCK during ingress
Specifications
Functional
| primary function | Habitat pressure regulation maintaining 101 kPa total pressure with N2 makeup from L3-ISR-VOL-STORE. |
| pressure target kpa | 101 |
| leak rate kpa per day max | 0.1 |
Physical
| mass kg | 15 |
| materials | Pressure transducers, 316L SS regulators, Latching valves |
| vacuum compatibility | True |
Operational
| power consumption w | 10 |
| thermal range c | -40, 70 |
| lifetime years | 25 |
| mtbf hours | 200000 |
Interfaces
Provides
- Maintained 101 kPa
Requires
- N2 makeup
- O2 makeup
Cite this entry
Lunar Ark Codex. "Pressure Control" (L3-HAB-ATMO-PRES). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-HAB-ATMO-PRES
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.