Living definition
What is H2FLY Liquid-Hydrogen Fuel-Cell Powertrain?
Aviation & Sustainable Flight Energy, Climate, Space & Materials
- As of
- 2026-08-20
- Revision
- 2026-08-17.1
- Method
- v1.3.0
Definition
The term, in context
AI-assisted draft · approved dataset
H2FLY builds a liquid-hydrogen fuel-cell powertrain for aircraft that stores hydrogen in cryogenic liquid form to pack more energy into a given tank volume than compressed gaseous hydrogen, then converts it to electricity in a fuel cell to drive electric motors and propellers. The only exhaust from the fuel-cell reaction is water vapor, making the powertrain a zero-carbon-emission alternative to burning jet fuel for short and medium-range flight.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-08-20, verified readiness is 35 (claimed 45, reported 41, gap 10) — Strong evidence strength; current signals suggest Track; not yet.
The readiness fact belongs to the canonical Readiness Verdict for H2FLY Liquid-Hydrogen Fuel-Cell Powertrain.
Dataset approval
Human editorial release
pragma.vision editorial — standing authorization (operator dev@soft.house, 2026-07-17)
- Dataset
- 2026-08-17.1
- Hash
- sha256:0c37108a182f510fc8cf4d1dfc3a30339f2b59e62654201edea2f530a268707e
- Approved
- 2026-08-17