| Pressure | TBD |
| Suit mass (1g) | 287 lb |
| Life support (primary) | Backpack PLSS — liquid cooling, oxygen, humidity, telemetry |
| Life support (backup) | Station interfaces |
| EVA duration | 7 hours |
| Program | Tiangong Station |
| Agency | CMSA / CNSA |
| Manufacturer | CASC |
| First use | 2021 |
| Status | Active fleet |
| Donning / entry | Second-generation EVA suit; white with colored crew-ID trims |
~130 kg; ~$4.14m unit cost; >7hr EVA; 15 uses/3 years standard — exceeded by 2025; liquid cooling; telemetry
Tiangong station assembly, maintenance and external payload tasks
Mass, dexterity, maintenance turnaround and consumables management are active watch items; lifespan now being extended
"Once a suit becomes a fleet asset, lifecycle economics and telemetry matter more than peak performance figures"
Active ISS-equivalent benchmark — China is building a sustained EVA operating model, not a demonstration capability
First US EVA physically exhausting and low-productivity despite suit functioning; glove productivity inadequate for task completion
→ Suit capability and worksite design must be developed together, not sequentially
Unexpected arm growth when shoulder restraint cable failed; seized pulley caused overheating in crotch-thigh region
→ Critical restraint paths need redundancy or condition monitoring. Small mechanical hardware in pressure-load paths creates outsized crew risk
Suit inflation during Leonov's EVA made movement and airlock re-entry critically difficult — Leonov had to partially deflate to re-enter
→ Make ingress/egress and self-rescue a separate verification gate from EVA capability itself
Numbness, bladder bunching, and palm-bar wear-through into hand across multiple crew members
→ Glove verification must include extended-use comfort and injury surveillance, not just pressure integrity and cold-object performance
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
Suit lifespan initially limited to 15 EVAs over 3 years; exceeded in operations before upgrade to 20 EVAs/4 years D/E series
→ Track cost-per-EVA, turnaround time and anomaly-free hours as primary KPIs once a suit enters fleet operations
"Rescue suit discipline must be kept separate from EVA product line — do not overbuild IVA with EVA objectives"
"Pragmatic dual-track approach — import to reduce mission risk while demonstrating domestic capability simultaneously"
"Lunar suit must be treated as a new architecture branch — not an incremental Feitian derivative — due to dust, terrain and thermal differenc…"
