Just a few thoughts on this.
Hydrogen as a fuel has a low BTU per pound value.
Hydrogen as a fuel must be carried in a pressure vessel.
The pressure vessel fuel container weighs much more than a petroleum based aircraft fuel container.
I don’t have any figures to quote but I would guess that the combination of a hydrogen fuel cell and the electric motor used to drive the propeller of this aircraft would weigh more than a typical aircraft engine.
When it come to aircraft extra weight equals slower airspeed and less range.
I don’t see hydrogen as a practical fuel for aircraft.
Good points and I think you are right - it is the same with LIB’s (lithium ion batteries) in that weight is a big problem.
I am not a proponent of the tech one way or another outside of my belief that hydrogen as a “transportation fuel” would benefit from nuclear power.
I am a BIG proponent of nuclear power and our Navy demonstrates quite well that it can be viable and safe at scale for power generation.
It is interesting that Toyota is committing a lot of resources into hydrogen vehicles as part of their “all of the above” approach (a much better business model).
Agreed