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Cake day: June 13th, 2023

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  • Her plane is worse than most. Its one of the last trijets in production. Planes with a small number of large engines are more efficient than planes with many small engines, which is why modern planes are all twinjets with wide high-bypass engines.

    Airlines care about fuel efficiency. A minor reduction in fuel burn results in increased profits, and they operate large fleets. A small increase in efficiency across an entire fleet is huge. If you own a private jet, you are spending huge amounts of money to have one, the cost of fuel would only be a minor concern.

    The solution to private jets is regulation. Private jets don’t need to exist. They don’t need to be replaced by another kind of airplane. The solution is to replace all planes on overland routes with electrified rail. Let the rich buy private railcars for transport.

    I’m not skeptical on the concept of small aircraft. I wanted to give context because very few people will picture bush planes and puddle jumpers from the mention of “commercial aviation.”

    PS: My calculations for fuel burn were based on comparing the range to the fuel capacity. Those are the numbers I have ready access. Planes are much less efficient when the tanks are full, and swift’s plane has a longer range, so it’s probably not quite as bad as my calculations indicate on comparable flights.


  • The carbon comes from the fuel. Burning a ton of jet fuel will release the same amount of carbon regardless of the plane that burns it.

    Taylor Swift’s plane is a Dassault Falcon 7X. It weighs around 17 tons and seats 12 to 16 passengers.

    Her plane burns 60% less fuel than a 737 MAX 8. However, her plane holds 9% of the passengers of the MAX 8, so its far less efficient per passenger than typical commercial aircraft.

    Private planes are not a huge contributor to carbon emissions in comparison to others. They’re bad, obviously. But there are far more commercial airplanes, and they fly much more frequently than private jets.

    Private jets get people’s attention. One person being directly responsible for that much carbon is notable is unconscionable. But it’s the scale of transportation overall that is the issue.






  • For context jet fuel is around 9,720 Wh/L. However, energy density(energy per volume) is less important in aviation than specific energy(energy per mass) as weight is far more likely to be the limiting factor.

    A standard lithium ion battery has 100-265 Wh/kg

    The article claims 500 Wh/kg in this new battery.

    Jet fuel has around 12,000 Wh/kg.

    Though this is a major improvement in battery tech, batteries are unlikely to ever improve to the point to even approach the energy storage of liquid fuels.

    Batteries cannot run commercial aviation as it currently exists. Battery planes will need to fly slower and shorter. There is no other way.






  • Arcane austin was already killed by the development of redfall. Most of the talent responsible for making dishonered and prey the games they were left during development of redfall. If arcane austin went back to making immersive sims instead of closing, it would be a new team making it, with little help from the pedegree implied by arcane’s legacy.

    Keep in mind however that arcane was two studios, the main studio in lyon france, and the other in austin texas. Dishonered was developed jointly. Dishonored 2 was lyon, pray was austin, and deathloop was lyon.

    The lyon studio still exists. They are continuing to make games. The only thing announced from arcane is the marvel’s blade game. Not optimistic, but arcane may still be around a while yet.





  • So what would stop them from shadow profiling you by scraping content, or using a different domain? Most lemmy instances are configured to federate with a blocklist, meaning any unblocked instance can download data. Facebook can just make an instance under a different domain and download the data that way. Or they can just scrape user data from the web facing interface.

    Posts and comments on lemmy are public. If facebook wants your publicly accessible data from the fediverse, de-federating from threads isn’t going to stop them.