Re:Solid-state EV batteries now face "production hell"
by TylerE on Sunday January 28, 2024 @02:19AM
(#39163260)
An important point EV advocates often gloss over is that you don't get to burn battery. In aviation, especiaslly, this really matters - over half an aircraft's weight at takeout is often fuel. The later in the flight it is, the more fuel has burned off, the lighter the plane is, and the more efficient the rest of the flight will be. You have to lug that empty battery around at full weight.
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Re:Solid-state EV batteries now face "production hell"
by jacquesm on Sunday January 28, 2024 @04:13AM
(#39163811)
The simple sum is to use half the weight of the fuel as though you have it with you all the time. That's not quite accurate but close enough.
Re:Solid-state EV batteries now face "production hell"
by wilg on Sunday January 28, 2024 @02:22AM
(#39163278)
Technically the battery gets a teeny bit lighter because of E=mc².
Re:Solid-state EV batteries now face "production hell"
by anyoneamous on Sunday January 28, 2024 @03:24AM
(#39163543)
Over long journeys, those 3 nanograms really add up.
Re:Solid-state EV batteries now face "production hell"
by fragmede on Sunday January 28, 2024 @03:33AM
(#39163594)
https://physics.stackexchange.com/questions/34421/does-the-m...
It's about a microgram.
Re:Solid-state EV batteries now face "production hell"
by hermitdev on Sunday January 28, 2024 @08:52AM
(#39165715)
So, in other words, you gained more mass from bugs splating on the windshield than you lost in the battery.
Re:Solid-state EV batteries now face "production hell"
by acdha on Sunday January 28, 2024 @09:17AM
(#39165988)
Don’t worry, we’ve been working on that:
https://www.science.org/content/article/where-have-all-insec...
Re:Solid-state EV batteries now face "production hell"
by bbarnett on Sunday January 28, 2024 @09:18AM
(#39166002)
But in the winter, as the cabin warms up, you have fewer air molecules to cart around.
Re:Solid-state EV batteries now face "production hell"
by tpurves on Sunday January 28, 2024 @10:20AM
(#39166577)
Well now you've just made me an engineering scenario of aircraft equiped with drop tanks full of heavy batteries used to extend range. Drop tanks that they let go mid flight 'bombs away!' as they discharge.
Re:Solid-state EV batteries now face "production hell"
by harpiaharpyja on Sunday January 28, 2024 @10:39AM
(#39166728)
So all we need then is parachutes, some kind of GPS based glide guidance control, and a network of aviation battery collection stations :)
I guess overseas flights will just have to absorb the cost, unless it happens to be economical somehow to operate floating stations for the purpose of collecting dropped batteries.
Re:Solid-state EV batteries now face "production hell"
by stetrain on Monday January 29, 2024 @09:02AM
(#39176322)
Rocket Lab's Electron rocket actually does this with the batteries that power its electric turbo pumps.
> The electric pumps are powered by lithium-polymer batteries. The second stage uses three batteries which are "hot swapped", two of the batteries are jettisoned once depleted to shed mass.
Re:Solid-state EV batteries now face "production hell"
by justahuman74 on Sunday January 28, 2024 @10:23AM
(#39166602)
Another interesting dynamic is that mid-air refueling is possible (though rare), where as for batteries that's impractical with current tech
Re:Solid-state EV batteries now face "production hell"
by feedsmgmt on Sunday January 28, 2024 @10:44AM
(#39166765)
Solar panels on the outside of the plane? They're above the clouds for the most part.