r/railguns • • 20h ago

Announcement r/railguns is back! Posting issues fixed.

4 Upvotes

Good evening everyone,

I apologize for the delay. The community is now fully public and anyone from the subreddit has the ability to post and comment.

There was an issue on my end where the subreddit was unintentionally set to restricted, only allowing approved users to post. Although I never made this change, it went unnoticed by me as I wasn’t routinely moderating.

I will be checking in daily so feel free to reach out to me if there are any issues going forward with posting, commenting, media or in general.


r/railguns • • 16h ago

News/Article Why Japan’s Electromagnetic Railgun Succeeded Where the US Navy’s Failed

Thumbnail laserwars.net
3 Upvotes

r/railguns • • 17h ago

Media Coil Accelerator Gen 2: Prototype Test

Thumbnail youtu.be
3 Upvotes

r/railguns • • 17h ago

Media Coil Accelerator Gen 2: 3D Model

Thumbnail youtu.be
2 Upvotes

r/railguns • • 16h ago

Media Images of the Japanese 40mm electromagnetic railgun prototype developed by ATLA.

Thumbnail gallery
1 Upvotes

r/railguns • • 16h ago

News/Article Japan Successfully Fires Ship-Mounted Railgun at Target Vessel for First Time

Thumbnail navalnews.com
1 Upvotes

r/railguns • • 17h ago

Media Coil Accelerator Next Gen (Gen 2)

Thumbnail gallery
1 Upvotes

The next gen coil accelerator to replace the CA-09. More info on https://coilaccelerator.com

Looks like a lot of changes, especially the projectile size/dimensions and fps. Unknown release date.


r/railguns • • Jul 17 '23

Question/Troubleshooting Is it necessary for the projectile to have strong contact to the rails? Or can I just make the projectile smoother to have less friction on the rails?

8 Upvotes

Title


r/railguns • • Jul 10 '23

General Discussion The US Navy did not abandon its railgun project and has deployed them in combat, but not in the way you think

10 Upvotes

The navy did not completely abandon the railgun as they claimed. They are built into the deck of the Gerald R Ford supercarrier(s). Instead of inert slugs, these railguns fire airplanes in the form of an eletromagnetic aircraft launch system (EMAL), a very clever use of the technology.


r/railguns • • Feb 18 '23

Question/Troubleshooting rails contact area

3 Upvotes

Does the size of the contact area of the rails, increase or decrease energy transfer vs things like friction and lorentz forces?

​

should i try to make my rails real narrow or almost wrap around my projectile?


r/railguns • • Oct 20 '22

Question/Troubleshooting Why do some railguns have magnets and others don't?

6 Upvotes

I've been doing research into these and it seems like people build them about the same except some have a row of magnets under them and some don't. It seems to work just fine without the magnets and I was wondering what difference they made. I asked a friend and he said I should put them on the top and bottom of the rails, but nobody else seems to do this. Can anyone help me understand what effects they have?


r/railguns • • Sep 30 '22

3D Printing/DIY A Chinese student DIY a powerful railgun.

Post image
21 Upvotes

r/railguns • • Sep 27 '22

Question/Troubleshooting Can you make a railgun slow?

10 Upvotes

I think it would be cool to make an arcade game with a small railgun shooting the tokens. I only need them to travel like 70fps (as fast as a nerf gun) and travel a measly 4ft or so tops. The thing also needs to shoot thousands of times without burning up the rails. Is it possible to make a circuit or something that slows down the current inrush from instantly to like 250ms instead?


r/railguns • • Sep 27 '22

Question/Troubleshooting Can you make a railgun that doesn't use the projectile to close the circuit?

4 Upvotes

Usually the projectile closes the circuit, but it's the field that actually imparts the motion right? So couldn't you have a switch turn it on instead?


r/railguns • • Sep 03 '22

Question/Troubleshooting Is there anyone trying to DIY a railgun?

9 Upvotes

r/railguns • • Jul 04 '22

Media Test firing at the United States Naval Surface Warfare Center Dahlgren Division in January 2008

Post image
12 Upvotes

r/railguns • • Jun 14 '22

Media CA-09 Pics

Thumbnail gallery
26 Upvotes

r/railguns • • Jun 14 '22

Media CA-09 Schematics/Specs

Thumbnail gallery
10 Upvotes

r/railguns • • Jun 14 '22

Media Coil Accelerator CA-09

Post image
20 Upvotes

r/railguns • • Oct 04 '20

Question/Troubleshooting Capacitors

10 Upvotes

Hi, this is kind of a noob question. I know that it's important for capacitors to have high voltage, but what about capacitance? When calculating for small capacitance you get small energy and vice versa, but everytime I see a railgun, it has some beefy capacitors with relatively small capacitance. For example, rig I am planning to buy would have 1760 J with one capacitor (400V, 22mF) but capacitors people use have 400V and like 2000uF which is obviously a lot less energy. What is the reason for this and what option should I choose?


r/railguns • • Jul 27 '20

News/Article Congressional report on US Navies railgun

Thumbnail documentcloud.org
4 Upvotes

r/railguns • • Jul 25 '20

News/Article July 10 2020 China releases video of their portable railgun design.

Thumbnail forbes.com
2 Upvotes

r/railguns • • Jul 25 '20

Media Video of nasa Railgun firing

Thumbnail youtu.be
15 Upvotes

r/railguns • • Jul 25 '20

News/Article A series augmented, multi rail, super capacitor, railgun made by nasa.

Thumbnail ntrs.nasa.gov
6 Upvotes

r/railguns • • Jul 24 '20

News/Article Space efforts for the railgun

Thumbnail space.com
0 Upvotes