Fuel Cell Developer H2Fly to Lead Europe's Project Heaven Hydrogen Aviation Initiative

The German company has started integrating fuel cells and liquid hydrogen tanks onto the HY4 technology demonstrator with plans to start ground testing in 2023.

The HY4 technology demonstrator, which has already flown with a gaseous hydrogen propulsion system, will now be converted to use liquid hydrogen. (Image: H2Fly)

By Charles Alcock • Managing Editor

December 5, 2022

The European Commission (EC) has appointed fuel cell developer H2Fly to lead its Project Heaven initiative to develop hydrogen propulsion technology for airliners. The German company is close to completing the integration of its fuel cells and liquid hydrogen storage tanks in the HY4 technology demonstrator aircraft to be ready to start ground testing in 2023.

The HY4 aircraft has previously flown with pressurized gaseous hydrogen. Stuttgart-based H2Fly, which is owned by U.S. eVTOL aircraft developer Joby Aviation, believes that its sixth-generation powertrain, using liquid hydrogen, could power 40-seat airliners on flights of up to around 2,000 km (1,250 miles).

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