FutureFlight
H2Fly Prepares To Integrate Liquefied Hydrogen Tank into HY4 Test Aircraft
The German company was acquired by eVTOL aircraft developer Joby Aviation, which has yet to say whether it intends to use the hydrogen propulsion systems for its own vehicles.
H2Fly's HY4 hydrogen technology demonstrator aircraft.
H2Fly is close to converting its HY4 demonstrator aircraft to run on liquefied hydrogen. (Image: H2Fly)

Hydrogen fuel cell developer H2Fly is about to modify its HY4 aircraft with a new liquefied hydrogen tank that will double its range. The technology demonstrator aircraft started test flights in 2020 using pressurized gaseous hydrogen, and the Germany-based company aims to start the next phase of ground trials for the system in early 2023.

H2Fly believes that its sixth-generation powertrain could be used for 40-seat airliners on flights of up to around 2,000 km (1,250 miles). It intends to produce the first commercial aircraft to be powered by liquid hydrogen.