There’s probably some limits to how big a reasonably swift aircraft can be due to drag. This charge seems to indicate liquid hydrogen would require something l

There’s probably some limits to how big a reasonably swift aircraft can be due to drag. This charge seems to indicate liquid hydrogen would require something like three times the volume as jet fuel / kerosene/ diesel. https://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Energy_density.svg/2000px-Energy_density.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/En...