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A comment on Toyota’s prototype 'cartridge' is a way to make hydrogen portable. Parent comment

Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by Robotbeat on Thursday June 02, 2022 @12:29PM (#31596980)
Electric aircraft have demonstrated flying for over an hour, and several hours is feasible.

No point in these compressed hydrogen things for airplanes. The weight is just too high. Hydrogen aviation only makes sense with cryogenic hydrogen storage IMHo, and only for very long duration

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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by Dylan16807 on Thursday June 02, 2022 @02:22PM (#31598645)
> Electric aircraft have demonstrated flying for over an hour, and several hours is feasible.

With massive downsides. Sure, liquid hydrogen probably makes a lot more sense for a plane than these things. But I don't think "only for very long duration" is true at all.

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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by jazzyjackson on Thursday June 02, 2022 @02:29PM (#31598757)
> The weight is just too high.

did OP not just point to a 4x increase in energy density?

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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by Robotbeat on Thursday June 02, 2022 @03:28PM (#31599459)
This is not a 4x increase in energy density. It’s functionally the same as high end lithium ion.
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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by gamblor956 on Thursday June 02, 2022 @02:07PM (#31598439)
And yet aviation technology professionals who presumably know more than either of us have decided that hydrogen is the future for general commercial aviation, not electric craft.
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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by Robotbeat on Thursday June 02, 2022 @03:34PM (#31599516)
I am an aviation technology professional.
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Re:Toyota’s prototype 'cartridge' is a way to make hydrogen ... by gamblor956 on Monday June 06, 2022 @11:52AM (#31642044)
Clearly not, if you believe that lithium-based batteries have anywhere near the energy capacity for large aircraft.
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