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A comment on Israeli Researchers Produce Green Hydrogen with 90% Efficiency. Parent comment

Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by pjc50 on Thursday August 17, 2023 @11:52AM (#37163593)
> Existing aircraft will be wholly unable to compete on any route where LH2 aircraft operate

? Are you suggesting this will be a result of regulatory action? Since it would most likely be more expensive for the first decade, even if I gave you a tap on the airfield labelled "free H2"

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Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by angiosperm on Thursday August 17, 2023 @12:31PM (#37164234)
It is because the very large difference in fuel weight for a flight leaves radically increased capacity for carrying paying freight. As LH2 produced on-site at airports gets cheaper than Jet-A fuel, the gap widens.
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Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by pjc50 on Friday August 18, 2023 @06:54AM (#37173910)
I'd need to see the numbers on this on joule/kg, and then allowing for the increased tankage size.
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Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by angiosperm on Friday August 18, 2023 @07:57PM (#37183787)
Volume is cheap, on aircraft. If a normal freighter today takes off with 25t of kerosene, the similar-sized LH2 craft needs only 10t of LH2. That means it can take an additional 15t of paying cargo.
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