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MomsAVoxellyesterday at 3:49 PM8 repliesview on HN

Seems like such an advance in this ancient technology. It would be really cool to see it applied in interesting ways.

I really wonder just how effective this could be as a defense system .. the mind wanders with every update Tom makes .. I imagine an aiming/targetting system would make this an effective, easily replenished, low-resource weapon system for some applications. Attacking feral animals, perhaps?

How could an auto-loader work for this .. I'm sure there's a means.

Another thing that I keep thinking about, is whether this would be an effective way to launch seed-bombs, or deal with avalanche conditions on a mountain without requiring fire-arms training.

A truly fascinating bit of engineering. I hope to see it evolve into an effective delivery mechanism.


Replies

nkriscyesterday at 5:44 PM

I don’t think this has much practical application as an entire system. Nor is it supposed to. It was built just to achieve and artificial goal with arbitrary constraints. That doesn’t make it any less cool or interesting, but that doesn’t make it useful.

Some of the features he used are pretty cool though, like varying the winding drum diameter to vary the delivered torque over the course of the weight drop.

andrewflnryesterday at 5:49 PM

> without requiring fire-arms training.

You'd need trebuchet training instead, which is probably not better in the long run. I bet there's still lots of ways to kill/mangle yourself with one of these, especially once you've been around them long enough to get casual and sloppy.

gattryesterday at 4:32 PM

I also loved the video. But I'd think if one wanted to deploy "simple" mechanical projectile weapons at scale, pneumatic launchers would be easier, more compact and more reliable (way less cool-looking and operating, though!).

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toasty228yesterday at 5:33 PM

Or we can just accept it as a cool gimmick, we don't have to kill animals with supersonic trebuchets really

red_admiralyesterday at 6:36 PM

> deal with avalanche conditions

Swiss solution: chuck some explosives out of a helicopter https://www.youtube.com/watch?v=H519qhLnRtM (start at 1:20)

(In the image at https://swisshelicopter.ch/de/aktuelles/721-lawinensprengen-... the explosive pack says "do not eat". I'm not reassured that we need this warning for people allowed to handle that.

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jijijijijyesterday at 6:25 PM

I think the only real advantage of this, compared to gas driven projectiles, is the lack of need for gas sealing and explosion resistance of the projectile. The projectile is accelerated much more gently. You can launch combustible, rather fragile and irregularly shaped projectiles. That said, I don't think there is much need for supersonic exit velocities for most scenarios. Maybe you could use it for impact testing without introducing a gas blast or the need of a gas sealing delivery vehicle. But I don't think you would opt for a gravity powered, purely mechanical device then.

zellynyesterday at 5:07 PM

Drone defense? :-)

monster_truckyesterday at 5:36 PM

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