Europe’s Mahepa Program Flies Fuel-Cell Propulsion Test Aircraft

Batteries and fuel cells fuel by gaseous hydrogen power the electric drive in the Hy4 central propulsion nacelle.
Credit: Mahepa program
A European team has flown a hydrogen-powered test aircraft as part of a program to develop a modular approach to hybrid-electric propulsion. The Hy4 is the most powerful fuel-cell-driven aircraft yet to fly. Equipped with improved hydrogen fuel cells, the Hy4 made its first flight in November from...

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