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submitted 11 months ago by L4s@lemmy.world to c/technology@lemmy.world

Japan Becomes 1st Country Ever To Fire Electromagnetic Railgun From An Offshore Vessel::Japan has successfully test-fired a medium-caliber maritime electromagnetic railgun from an offshore platform, as it continues to advance its defenses in the face of burgeoning regional security threats.

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[-] GrammatonCleric@lemmy.world 63 points 11 months ago

Of course the country that makes games, anime and manga full of giant mechs with railguns does it first

[-] buycurious@lemmy.world 19 points 11 months ago
[-] seaQueue@lemmy.world 5 points 11 months ago

Stop asking for a grey goo incident or we're going to have a grey goo incident

[-] meat_popsicle@sh.itjust.works 5 points 11 months ago

Played college ball ya know!

[-] Hadriscus@lemm.ee 3 points 11 months ago

wake me.... when you have railguns

[-] Substance_P@lemmy.world 3 points 11 months ago

I hear that there is no other way to kill Godzilla.

[-] mo_lave@reddthat.com 59 points 11 months ago

They fired a certain scientific railgun. Nice.

[-] prashanthvsdvn@lemmy.world 21 points 11 months ago

Hey look out for a certain scientific accelerator and a magical index as well.

[-] orclev@lemmy.world 38 points 11 months ago

I could have sworn that the US navy has had experimental railguns on carriers for a while. I don't think they ever intended them as actual functional weapons, but I was pretty sure they had at least done some tests with them.

[-] YoBuckStopsHere@lemmy.world 43 points 11 months ago

The U.S. Navy hasn't declassified their tests so there is no official record. Japan was the first to openly do it.

[-] steltek@lemm.ee 24 points 11 months ago

Uhh, I dunno how much declassification you're looking for but here's the US Navy's Youtube channel with a video of some test firings: https://www.youtube.com/watch?v=OSce3nEY6xk

IIRC, the problem wasn't that it didn't work but that the barrels wore out too quickly to be useful. I suppose they could have put this on a Zumwault like originally intended but that would just be a PR stunt when the main problem was throwing the gun away after 10 shots.

[-] HurlingDurling@lemm.ee 7 points 11 months ago

I think there was an episode of Evangelion where they posed the same problem and solved by having multiple guns to switch to. I guess it's common knowledge of thermal dynamics? IDK

[-] gravitas_deficiency@sh.itjust.works 6 points 11 months ago

If the JMSDF has gotten to this phase of development, I’m gonna have to assume they’ve either made some advances in material science that deal with the extremely accelerated corrosion/ablation in the rails/barrel, or have come up with a reasonable way to quickly swap the wear components out. Who knows - maybe it’s as simple as a spool of conductive wire/metal strip runs down the length of the barrel and gets refreshed with every shot?

[-] TheDarkKnight@lemmy.world 3 points 11 months ago

Maybe they just a ton of lube, butter that bad boy up before a big battle and let a rip!

[-] SpacetimeMachine@lemmy.world 5 points 11 months ago

This is talking about firing from an off shore vessel though. They declassified the test firing on land years ago.

[-] PipedLinkBot@feddit.rocks 2 points 11 months ago

Here is an alternative Piped link(s):

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[-] Ghostalmedia@lemmy.world 11 points 11 months ago

From what I see, it looks like they never actually put the thing on a boat. All the testing was on land.

And after years of R&D the US Navy put the project on ice recently. Apparently they don’t think it’s worth the cost.

[-] Blamemeta@lemm.ee 3 points 11 months ago

We have on land. They just suck up a lot of power and missiles do the same job but better

[-] SkybreakerEngineer@lemmy.world 2 points 11 months ago

You're thinking of EMALS. It's a catapult for aircraft, not a gun. Pretty close in concept though. Had some teething issues, turned out larger than expected, but works just fine now.

[-] NOT_RICK@lemmy.world 1 points 11 months ago

The GAO says it still has reliability issues that won’t likely be ironed out for about a decade.

[-] NotMyOldRedditName@lemmy.world 2 points 11 months ago

I think I've only ever seen tests from land, but I'd be shocked if a ship didn't have one, but I wouldn't be if they were quiet about it

[-] crawancon@lemm.ee 1 points 11 months ago

yeah transformers rise of the fallen featured a navy ship with an EM gun... but none that we have today are unclassified. Japan's was first!

[-] AA5B@lemmy.world 1 points 11 months ago

It was classified there too

[-] southsamurai@sh.itjust.works 18 points 11 months ago

Damn, I was just researching EM based weaponry for a fiction book. Didn't expect to see this kind of news for a few years based on what I found.

[-] MossyFeathers@pawb.social 16 points 11 months ago* (last edited 11 months ago)

Here, this'll probably make your day: MARAUDER plasma railgun. The first simulations were done in 1990, the first real-world test was done in 1993. They estimated that by 2000, their prototype would be capable of firing a plasma toroid at 3% of the speed of light.

My understanding is that the little we know about it is a result of someone either not taking the project seriously, or forgetting to classify the research. The result was that the early research got leaked to the public while the later research is believed to have become classified, which is why the otherwise successful project suddenly disappeared.

Edit: removed a redundancy

[-] pythonoob@programming.dev 4 points 11 months ago

Top secret = classified...

[-] MossyFeathers@pawb.social 4 points 11 months ago

I thought I'd heard that "classified" and "top secret" were levels of classification for info, but after looking it up it looks like you're correct.

[-] southsamurai@sh.itjust.works 3 points 11 months ago

That's what I based a different weapon on in my table top rpg world :)

[-] Ghostalmedia@lemmy.world 9 points 11 months ago

Been possibly for a long time. Whether or not it’s a practical solution is another story.

[-] southsamurai@sh.itjust.works 2 points 11 months ago

Eh, I could hand wave the important bits behind "war-time research and development in a universe where physics isn't exactly the same", but it wouldn't really work for the story I want to tell. I want it to highlight a bit of an important side character, so if I'm hand waving their area of expertise, it falls apart.

[-] 8BitRoadTrip@lemm.ee 16 points 11 months ago

Sad Zumwalt noises.

[-] makingStuffForFun@lemmy.ml 13 points 11 months ago

My mate in high school used to make these. He'd wind his own electromagnetic little tunnel thing, apply current, and the little metal projectile used to shoot through walls. Was pretty amazing.

[-] SpacePirate@lemmy.ml 13 points 11 months ago

That’s a gauss gun, not a railgun. Still cool, though.

[-] Hadriscus@lemm.ee 4 points 11 months ago

I assumed they were synonyms ? how do they differ ?

[-] papertowels@lemmy.one 8 points 11 months ago

They're pretty similar, in that both use electromagnetic forces to launch a projectile.

Gaus cannons use a field around the projectile, applied by wires wrapped around a tube, whereas railguns use two rails touching the projectile to conduct the magnetic field through the projectile.

[-] NoSpotOfGround@lemmy.world 2 points 11 months ago
[-] PipedLinkBot@feddit.rocks 2 points 11 months ago

Here is an alternative Piped link(s):

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[-] makingStuffForFun@lemmy.ml 4 points 11 months ago

Ahhh ok. He'd do them with the capacitors from disposable cameras that the local camera store would give him.

[-] Hadriscus@lemm.ee 6 points 11 months ago

That's pretty cool, and dangerous

[-] z00s@lemmy.world 4 points 11 months ago

The Venn diagram for those two things is just a single circle

[-] threelonmusketeers@sh.itjust.works 5 points 11 months ago

Did you go to high school with the Hacksmith team?

[-] MossyFeathers@pawb.social 9 points 11 months ago

They should try getting info on whatever they can about MARAUDER. Might be better at intercepting missiles than a railgun that fires physical projectiles.

this post was submitted on 20 Oct 2023
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