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April 11, 2025

Hydrogen-Powered R44 Demonstrator Takes Maiden Flight

Unither Bioelectronics Logs First Piloted Hydrogen VTOL Flight

Unither Bioelectronics, a subsidiary of United Therapeutics, recently announced that its modified Robinson R44 helicopter made its airborne debut on March 27. It was powered by PEM fuel cells and an electric motor, making it the first successful flight of a piloted, hydrogen-powered VTOL.

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