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2 yr. ago

  • Still increases air resistance. It gets hit by air, and that pushes it back into the fuselage.

    Larger aircraft commonly have a ram air turbine (RAT) or Air Driven Generator (ADG) to provide some electrical power and hydraulics in certain emergency situations.

    On CRJs, it's right up the front: https://www.youtube.com/watch?v=MxgPrpjByTE

    Still delivers a percent or two penalty to fuel burn, and the tiny little generator doesn't even come remotely close to making up for that.

  • It means more tax take and less superannuation spending. Depends on the country's superannuation system, of course.

    That means more money available for all the things taxes are used for, many of which are very very necessary.

    How can you justify cuts to the healthcare system because you claim to not have enough money, but then pay pensioners some thousand dollars a fortnight, regardless of what assets or other income they have?

  • You're wrong in terms of long distance power lines being mostly copper, but this does seem a lot like fossil fuel propaganda.

    Motors, generators, and transformers can be built using aluminium; they're just a bit bulkier and less efficient. Very common practice.

    It looks like CCA might be making its way back into house wiring in the near future, with much lower risks than the 70s aluminium scare.

    The big thing is that batteries really should be a last resort, behind demand response (using power when it is available, rather than storing it for later), long distance transmission, and public transport instead of private vehicles.

  • That's incorrect. Aluminium is about 30% worse by volume than copper, meaning you need to go up a size. What stopped it being used for houses was that the terminations weren't good enough, because aluminium has different thermal expansion and corrosion properties, plus they were using much worse alloys. That's now mostly fixed and if you're in the US, there's a very good chance that your service main is aluminium, and there's talk of allowing copper-clad aluminium (CCA) for subcircuit wiring.

    Per mass, aluminium is a better conductor, which is why it's almost exclusively used overhead and in pretty significant volumes underground. The power grids were built on ACSR.

  • In a lot of the world, a school bus is a normal city bus that gets "school" signs put on the front and back, and runs a specific route. There's not much point in maintaining a dedicated fleet.

  • It would have to be in a single district; attempting multiple would definitely fail.

    NZ has had a number of individual electorates where the Greens* won the seat, Labour came second, and National 3rd. With a sufficiently left-wing area and a galvanised base, it's possible.

    • Note: NZ greens definitely are not the same as the US Russian plants.
  • It is possible for a third party to arise in FPTP elections, but it's certainly not common or easy. The UK has a bunch; NZ had a couple before moving to MMP; I think Australia has some.

    It usually requires a competent and well-known politician storming out of their party for ideological differences, but being locally popular enough to win their seat as an independent or new party.

    AOC might pull it off.

  • xkcd @lemmy.world

    xkcd #3080: "Tennis Balls"