Opinion: ‘Hello Hydrogen’? Not So Fast

Universal Hydrogen aircraft
Credit: Universal Hydrogen
Excitement is warranted about the March 2 flight of Universal Hydrogen’s hydrogen-electric-powered Dash 8-300 testbed—featured on the AW&ST March 15-27 cover under the banner “Hello Hydrogen”—as well as the 10-min. flight of ZeroAvia’s hydrogen-powered Dornier 228 testbed six weeks earlier. But a...

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