The hydrogen-powered HY4 conducted its first test flight over Stuttgart Airport in Germany on Friday, Sept. 30th 2016.
The plane’s developers have created a small four seater aircraft run completely by hydrogen fuel. That’s possible through the four low temperature Proton Exchange Membrane fuel cell modules that sit behind the prop of the aircraft.
These cells convert the hydrogen fuel and oxygen into water and electricity, which powers the plane. This is the system used while the plane is in flight, while 21 kWh lithium polymer battery packs are used during take-off and climb.
In its test flight, HY4 was flown for 10-15 minutes above the airport. The key now is finding a method of creating clean hydrogen fuel.