H2FLY's HY4 prototype plane could hypothetically fly as far as 930 miles using the emissionless fuel source.
, H2FLY completed a total of four flights using liquid hydrogen, one of which boasted over three hours of airtime. Unlike past tests, however, the company’s HY4 prototype aircraft this time around utilized liquified, cryogenically stored hydrogen instead of pressurized gaseous hydrogen . The fuel source alteration reportedly allows for significantly lower fuel tank volumes and weights, thus boosting the aircraft’s range, as well as the amount of space that can be dedicated for payloads.
Atop the impressive test results, H2FLY explains its latest HY4 flights “marks the culmination” of Project HEAVEN, “a European-government-supported consortium assembled to demonstrate the feasibility of using liquid, cryogenic hydrogen in aircraft.” Apart from various business consortium partners, the project included funding from the German Federal Ministry for Economic Affairs and Climate Action, the German Federal Ministry for Digital and Transport, and the University of Ulm.
Moving forward, H2FLY aims to begin work on commercialization of its aircraft and fuel technologies. This will include the development of new fuel cell systems capable of providing full power ranges for emissionless flights achieving altitudes as high as 27,000 feet. Next year, the company also plans to open a Hydrogen Aviation Center at Germany’s Stuttgart Airport.Andrew Paul is Popular Science's staff writer covering tech news. Previously, he was a regular contributor to The A.V.
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