Unither has flown its hydrogen-electric-powered R44 to 80 kt. and 800 ft. at Bromont in Quebec.
Credit: Unither Bioelectronics
Unither Bioelectronics is preparing to fly its hydrogen-electric-powered helicopter testbed on liquid hydrogen (LH 2), having first flown the modified Robinson R44 on pressurized gaseous hydrogen and fuel cells in March 2025. The Canadian subsidiary of U.S. biotech company United Therapeutics is...
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