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A comment on Aviation Is on a Low-Carbon Flight Path. Parent comment

Re:Aviation Is on a Low-Carbon Flight Path by kortilla on Thursday November 07, 2019 @04:37PM (#21477575)
Energy density of jet fuel is 45MJ/kg. Fuel is a significant portion of the weight on the plane. Requiring a 10x+ increase in fuel weight is a non-starter no matter how light the engines.
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Re:Aviation Is on a Low-Carbon Flight Path by darksaints on Thursday November 07, 2019 @05:03PM (#21477798)
If you're measuring in MJ/kg, hydrogen is 141MJ/kg. Hydrogen, in terms of weight, is absolutely better than jet fuel, not worse. It's not very dense (kwh/l) though, and that could be a problem.
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