Long-haul aviation, like everything else in the human world, needs to be totally decarbonized, and in the race to zero emissions for international airliners, liquid-hydrogen powertrains look like one of the only viable possibilities.
Airbus is working on a number of hydrogen-powered aircraft, and it’s just found a new angle on cryogenic liquid H2 fuel: using it to supercool the powertrain down to superconducting temperatures, possibly unlocking huge weight and efficiency savings.