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A hydrogen-powered air taxi flew 523 miles emitting only water vapor (www.popsci.com)
submitted 3 months ago by kalkulat@lemmy.world to c/climate@slrpnk.net
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"Joby took a pre-production prototype of one of its battery-electric aircraft and outfitted it with a liquid hydrogen fuel tank and fuel system. The modified, hydrogen-powered VTOL was able to complete a 523 mile flight above Marina, California..."

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[-] Allero@lemmy.today 4 points 3 months ago

Batteries take up about 15-20% of the vehicle mass and have around 90% efficiency

Hydrogen cycle has, at best, 60% efficiency (assuming amazing logistics and fuel cell for hydrogen-to-energy conversion); also, hydrogen systems also weigh a lot, but even if they would weigh literally 0kg, they would lose on efficiency anyway.

this post was submitted on 15 Jul 2024
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