canadian company unither bioélectronique has successfully completed the world’s first full‑mission flight of a manned hydrogen‑powered helicopter—its modified robinson r44 performed a complete flight cycle, including takeoff, climb, level flight, hover, and landing.
this aircraft completely abandons traditional internal combustion engines, adopting a hybrid electric propulsion system: at its core are two high‑performance hydrogen fuel cells, supplemented by high‑energy‑density lithium‑ion batteries to meet the instantaneous peak power demands during takeoff and maneuvering phases. the entire system delivers a maximum continuous output of 178 kilowatts (approximately 239 horsepower), with over 90% of the flight energy supplied by the hydrogen fuel cells; the only emission is pure water.
the current prototype uses compressed hydrogen for power, but it will later be upgraded to a liquid hydrogen storage and transport solution, significantly increasing energy density and range. the development team has already launched phase ii—building on the robinson r66 platform to create a production‑ready hydrogen‑powered helicopter with greater payload capacity and longer range, aiming for a target range of 463 kilometers.
