hydrogen-electric aviation Ecojet, the startup airline for a green Britain, flounders for lack of £20m funding News Ecojet, the startup airline for a green Britain, flounders for lack of £20m funding Ecojet September 3, 2025 The private jet aiming to cut emissions with hydrogen-electric propulsion Video The private jet aiming to cut emissions with hydrogen-electric propulsion Beyond Aero August 30, 2023 ZeroAvia completes ninth test flight News ZeroAvia completes ninth test flight Bombardier Q400 July 12, 2023