Well, at the moment, I'm sure, but unless you use a lot of frankenrockets it'll be as with all motorised transport innovations--they're relatively harmless curiosities at first, and then usage explodes until you get to successive breaking points. The upshot is usually just more and more travel beyond any reasonable utility that one could rationally defend. As I joked earlier, there may well be environmentally useful applications for rocketry, but would they really happen in favour of middle-aged billionaires going up for their fifteen minutes in space?
Hydrogen is a poor fuel as it has a low specific energy.
It also takes a lot of energy to compress it to a liquid,
and special alloy tanks to contain it.
There is something to be said for injecting (upto 6%) hydrogen
from electrolysis from 'surplus' wind power into the gas pipeline system.
Well, at the moment, I'm sure, but unless you use a lot of frankenrockets it'll be as with all motorised transport innovations--they're relatively harmless curiosities at first, and then usage explodes until you get to successive breaking points. The upshot is usually just more and more travel beyond any reasonable utility that one could rationally defend. As I joked earlier, there may well be environmentally useful applications for rocketry, but would they really happen in favour of middle-aged billionaires going up for their fifteen minutes in space?