Not for main propulsion of aircraft; to do the work of a jet airliner, you’d need electric motors driving ducted fans and fuel cells plus transmission cables and such capable of handling 5 to 10 megawatts. You’d also need to figure out a source of hot high pressure air for deicing systems and cabin pressure as that’s usually taken from the compressors of the main engines. You’ll see hydrogen burning turbofans before you see fuel cell powered airliners. I could see a fuel cell replace a turbine APU if you did build a hydrogen powered jet though.
And exactly how do you conclude that? That quad propeller Airbus design is at least 100 passengers, and Airbus say you can also burn Hydrogen directly in jet engines.
I clearly wrote hydrogen Fuel cells.
Not for main propulsion of aircraft; to do the work of a jet airliner, you’d need electric motors driving ducted fans and fuel cells plus transmission cables and such capable of handling 5 to 10 megawatts. You’d also need to figure out a source of hot high pressure air for deicing systems and cabin pressure as that’s usually taken from the compressors of the main engines. You’ll see hydrogen burning turbofans before you see fuel cell powered airliners. I could see a fuel cell replace a turbine APU if you did build a hydrogen powered jet though.
Fuel cell planes:
https://www.airbus.com/en/innovation/energy-transition/hydrogen/zeroe-our-hydrogen-powered-aircraft
https://zeroavia.com/
The ZeroAvia is an actually working plane:
https://en.wikipedia.org/wiki/ZeroAvia
So they’ve existed for years now, and the concept is proven.
Those are small, short range aircraft, the technology does not scale.
And exactly how do you conclude that? That quad propeller Airbus design is at least 100 passengers, and Airbus say you can also burn Hydrogen directly in jet engines.