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*gasp, wheeze*No, hydrogen is NOT going to be the aviation fuel of the future. Density sucks, 1kg of liquid hydrogen is still 14.8 liters volume. And then you get to deal with all the other fun that comes with handling deep cryogenic materials.Synthetic kerosene is the likely winner, AKA Sustainable Aviation Fuel. Maybe butanol, the contest really comes down to costs of production and storage (and documentation, since this is aviation related). It took something like 14 years to get unleaded avgas approved with full STCs and any mix % between 100LL and 100UL allowed, so that the flight ops people can just top off their avgas tank with 100UL and not worry about it. 100UL STCs are something like $10/hp from the STC holder, you put your aircraft info into a website and print off the STC as soon as the credit card info goes through. $2000 for most single engines, obviously lots more for warbirds with 1500+hp.
*gasp, wheeze*
No, hydrogen is NOT going to be the aviation fuel of the future. Density sucks, 1kg of liquid hydrogen is still 14.8 liters volume. And then you get to deal with all the other fun that comes with handling deep cryogenic materials.
Synthetic kerosene is the likely winner, AKA Sustainable Aviation Fuel. Maybe butanol, the contest really comes down to costs of production and storage (and documentation, since this is aviation related). It took something like 14 years to get unleaded avgas approved with full STCs and any mix % between 100LL and 100UL allowed, so that the flight ops people can just top off their avgas tank with 100UL and not worry about it. 100UL STCs are something like $10/hp from the STC holder, you put your aircraft info into a website and print off the STC as soon as the credit card info goes through. $2000 for most single engines, obviously lots more for warbirds with 1500+hp.
