• JeeBaiChow@lemmy.world
    link
    fedilink
    arrow-up
    10
    ·
    8 months ago

    Has it ever launched anything into orbital altitudes yet? So it’s like AI, then? Let’s pour money into it asap!

  • EfreetSK@lemmy.world
    link
    fedilink
    arrow-up
    6
    ·
    8 months ago

    I remember watching debunking video of this years ago. If I remember right, the problem was how to stop a projectile (a rocket in this case) from spining once it’s released. I need to find that video …

    • CheeseNoodle@lemmy.world
      link
      fedilink
      English
      arrow-up
      4
      ·
      8 months ago

      I did watch that and there are problems but the debunking video itself was really bad and acted like there were problems that had already been addressed in the video it was a direct response too. It still seems like a crazy idea but they have had test launches and there didn’t seem to be a spinning issue.

    • Arghblarg@lemmy.ca
      link
      fedilink
      arrow-up
      4
      ·
      8 months ago

      OK, but couldn’t the item have some small thrusters with a control system to cancel out any tumbling/spinning once it’s launched? That would require some fuel, but a lot less than required for a traditional launch…

      And wouldn’t fins like on an arrow take care of stabilizing spin around the major(?) axis?

      Pls don’t flame me, I’m not a physicist or rocket-scientist :)

    • Voyajer@lemmy.world
      link
      fedilink
      arrow-up
      4
      ·
      8 months ago

      Satellites have to go through shock and vibe testing based on the vehicle bringing them up, satellites using spinlaunch will need to be built around it.

    • bluemellophone@lemmy.world
      link
      fedilink
      English
      arrow-up
      3
      ·
      8 months ago

      You’d be surprised how well modern cubesats are already designed implicitly with high-G components. There was a video about them testing an “off-the-shelf” sat from a professor and it held up with only some minor modifications.

  • Sorgan71@lemmy.world
    link
    fedilink
    arrow-up
    1
    ·
    8 months ago

    not possible. This could work for orbiting probes but only if you send up a little fuel with it as well. The orbital mechanics work out so that the probe will fall to the height of the catapult which is in the atmosphere.

    • Eiri@lemmy.ca
      link
      fedilink
      arrow-up
      1
      ·
      8 months ago

      What prevents them from doing exactly that?

      Lots of (all?) satellites have propulsion systems to make orbit adjustments anyway. Is it that complicated to bolster them a bit for that purpose?

      • Sorgan71@lemmy.world
        link
        fedilink
        arrow-up
        2
        ·
        8 months ago

        Well I just meant the restriction in the title where it said no rocket fuel. Its not possible if you have no rocket fuel. But they probably will use rocket fuel if they get the faucility to have a big enough diameter to get mostly to orbit.

      • Bimfred@lemmy.world
        link
        fedilink
        arrow-up
        1
        ·
        7 months ago

        I’d imagine having the propellant tanks, plumbing, valves and engines survive 10,000Gs without crumpling or deforming to the point of failure is going to be a bit of an issue. Any thin and lightweight structures like foldable solar panels (and their deployment mechanisms) are also going to be tricky.

        • Eiri@lemmy.ca
          link
          fedilink
          arrow-up
          2
          ·
          7 months ago

          Hmm, but if the acceleration is gradual, shouldn’t it be fine?

          Or are you referring to the constant centripetal acceleration felt by the object as it’s spinning?

          Man is physics class far away

          • Bimfred@lemmy.world
            link
            fedilink
            arrow-up
            2
            ·
            7 months ago

            The centripetal acceleration. It’s going to ramp up fast. There’s also the concern of what’s gonna happen to the payload when it’s released, exits the vacuum chamber and smacks right the fuck into the dense low-level atmosphere at a significant Mach number. Cause that’s what has to happen if the goal is to reduce the need for onboard propellant.

  • PMFL@lemmy.world
    link
    fedilink
    Português
    arrow-up
    1
    arrow-down
    1
    ·
    8 months ago

    I saw a documentary years ago about this, really cool technology, and it saved a lot of money.