Mk II Model O
"Established B.F. Goodrich as the lead US full-pressure suit contractor before Mercury existed"
| Pressure | TBD |
| Suit mass (1g) | TBD |
| Life support (primary) | Not publicly disclosed |
| Life support (backup) | Not publicly disclosed |
| EVA duration | N/A |
| Program | Commercial Crew / Exploration |
| Agency | Commercial |
| Manufacturer | Collins Aerospace (RTX) |
| First use | TBD |
| Status | Withdrawn — exited ISS EVA task order, 2024 |
| Donning / entry | Not publicly disclosed |
Life support system drawing on Collins Aerospace PLSS heritage; RTX aerospace manufacturing
ISS orbital EVA; received NASA xEVAS task order December 2022; withdrew from task order June 2024
Design specifications not public; withdrew from NASA xEVAS ISS EVA task order June 2024
"xEVAS dual-award to Axiom Space and Collins Aerospace (2022) demonstrated NASA strategy of maintaining two US EVA suit developers. Collins withdrawal in 2024 reverted ISS EVA suit supply to single-provider risk."
Collins exit from xEVAS leaves commercial station EVA market (Starlab, Orbital Reef) without a second-source US EVA suit developer under NASA contract.
Water entered Luca Parmitano's helmet during EVA — vision impaired, comms degraded, breathing compromised
→ Cooling-water management is a primary safety-critical function, not a nuisance issue. Contamination tolerance must be designed in from day one
"Established B.F. Goodrich as the lead US full-pressure suit contractor before Mercury existed"
"Parallel development track alongside Model O testing different mobility solutions"
"Naval and NASA pressure suit research tracks cross-pollinated significantly in this era"