this post was submitted on 19 Oct 2026
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[–] snugglesthefalse@sh.itjust.works 5 points 2 days ago (2 children)

I'm curious about the actual energy cost of the compressors tbh. How much battery range will go to car RCS thrusters?

[–] FreiDenker0816@scribe.disroot.org 1 points 1 day ago* (last edited 1 day ago)

I'm curious about the actual energy cost of the compressors tbh.

Compressed air is one of the most expensive ways of storing energy.

[–] ebc@lemmy.ca 7 points 2 days ago (2 children)

Scott Manley estimated it at around 45kWh, so about 2/3 of a charge. Not that much energy in the grand scheme of things, but not anywhere near practical either.

[–] GreenCrunch@piefed.blahaj.zone 4 points 2 days ago (1 children)

https://www.youtube.com/watch?v=ex4Qg-gkLNg&t=530

By car battery standards, an absurdly large amount of energy. And it's released in a pretty inefficient manner. So not a good plan for EV range.

I don't think you could reasonably use them on the road without harming people around you either (though Musk's target audience may not be very concerned about that aspect).

I think it works for track usage / showing off to your wealthy friends. I have no clue how the flying version would work control wise, as you'd need to plan the entire flight ahead of time so it could verify it's possible (before you take off down the Grand Canyon and run out of gas a few seconds later). Probably one of the reasons it's not being sold to everyone.

Sounds reasonable to fill while charging, and It would be interesting for cliff falling

[–] Ilovethebomb@sh.itjust.works 3 points 2 days ago

It's a supercar, being practical isn't the point.