| Pressure | TBD |
| Suit mass (1g) | TBD |
| Life support (primary) | Self-contained EVA life support concept |
| Life support (backup) | Not operationalized |
| EVA duration | N/A |
| Program | ESA / RKA Joint Program |
| Agency | ESA + Russian Space Agency |
| Manufacturer | European industry + Russian heritage |
| First use | TBD |
| Status | Prototype only — never flown |
| Donning / entry | Rear hatch entry; designed for ~2 minute donning in microgravity; adjustable-length arms and legs |
Hard-shell torso; rear-entry; modular adjustable limbs; rapid donning target; combined European technology with Russian operational experience
Designed for ISS construction and maintenance EVA — never operationalized
Program never progressed beyond prototype; now on display at ESTEC as a path not taken; parent program funding dependency caused cancellation
"Europe proved the rear-entry rapid-donning concept works — but without a funded anchor mission the architecture never matured"
Most relevant unflown EVA architecture in the European context — directly informs EuroSuit design principles and any future sovereign European EVA capability
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
Risk that Feitian Gen-2 orbital EVA success may drive incremental adaptation to lunar surface rather than treating Wangyu as a new architecture branch
→ Orbital EVA success is not a sufficient baseline for lunar surface operations — treat as a new product architecture, not an upgrade
Technically sound rear-entry EVA prototype never operationalized — cancelled when parent Hermes/Columbus program context changed
→ A technically correct architecture without a funded anchor mission will not survive program review — mission pull must precede or accompany suit development
ESA astronauts have operated in partner suits (Orlan, EMU, ACES, SpaceX) for 30+ years without a European sovereign EVA capability
→ User experience in partner systems is valuable but does not substitute for sovereign design authority — Europe must choose between partner dependency and independent capability
"Non-traditional partners — sports equipment manufacturers, medical research institutes — can enter human spaceflight hardware through IVA ra…"
