• School_Lunch@lemmy.world
    link
    fedilink
    English
    arrow-up
    0
    ·
    2 months ago

    I wonder how much more energy it took to accomplish that compared to just shooting a rocket. Last I had heard railguns weren’t really feasible because of the absurd amount of energy they would require even with perfect efficiency.

    • UraniumBlazer@lemm.ee
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months ago

      It’s not the absurd amount of energy that’s the problem. It’s the absurd amount of energy that has to be STORED AND RELEASED within a fraction of a second in a controlled fashion.

      If you wanna go electric, you would need a stupendous amount of capacitors and a gun that won’t get destroyed due to the immense energy release.

      If u wanna go chemical (like an actual gun), u r faced with the same problem of the gun exploding.

      The only approach that MIGHT work is the Spinlaunch thing, where u essentially store this energy as angular momentum in a THICCC carbon fibre rod. Spinlaunch is still yet to demonstrate anything remarkable, so there’s that.

    • guacupado@lemmy.world
      link
      fedilink
      English
      arrow-up
      0
      ·
      2 months ago

      They’re not feasible because of the erosion of the barrel with our current level of materials science.

    • Buffalox@lemmy.world
      link
      fedilink
      English
      arrow-up
      0
      ·
      edit-2
      2 months ago

      I’m no expert, but I could imagine rail-guns would be a huge advantage on nuclear powered vessels. For one the ammo doesn’t explode if hit by enemy fire, and I’m guessing the ammo would be super cheap. In theory you could shoot bars of iron.

      • EvilBit@lemmy.world
        link
        fedilink
        English
        arrow-up
        0
        ·
        2 months ago

        They might also have a much smaller launch signature, meaning harder response to a first-strike launch. But I’m not a physicist or nuclear deterrence expert or anything.