Been There, done that.
We already discussed WHY nothing else is used for fuelling aircraft.
Hydrocarbons are safer, cheaper, lighter, cleaner *, better, and they work.
They will be in the future, too, even if we have to make them specially for the job.
Learn from your prior postings, or shut up.
* cleaner overall. Although specific pollutants are undesirable, alternative fuels like hydrogen have unexpected pollution problems like enormously elevated NOx output due to high burn temperature, and higher full-cycle pollution due to the need for more exotic materials in the fuel supply system and engine components.
