Hydrogen-Powered Aircraft: Hydrogen-Electric Hybrid Propulsion for Aviation
The ever-increasing demand for passenger air travel means unprecedented aircraft market growth in the coming decades. However, large airline fleets lead to serious environmental concerns. A clear goal was set during the 2021 United Nations Climate Change Conference (COP26): securing global net-zero emissions by midcentury while keeping 1.5 °C of temperature rise within reach. Hydrogen (H 2 ) propulsion technology provides one of the most promising opportunities to meet this target and decarbonize global aviation. Thus, this article reviews and collates state-of-the-art research related to H 2 –electric hybrid aircraft. After introducing the potential benefits of H 2 propulsion, fuel cell (FC) auxiliary power in airplanes and H 2 FC-powered aircraft are discussed.
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