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US Navy's Railgun Now Undergoing Tests in New Mexico

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Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#31

Is there any active research on this technology for non-rocket launch systems?

Do you mean like going to space? There's some research but after everyone figured it that all humans inside would be instantly squished they started researching other avenues. The g forces are pretty large and would damage a lot of cargo too.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#32

As usual, I find the music in all of the linked videos delusional, as if this high-tech killing machine was created to astonish patriotic five-year-olds. For the sake of analogy, someone should overlay the same music to the engineering of a-bombs and gas chambers.

> created to astonish patriotic five-year-olds In other words, the current POTUS?

I can't tell if you're being downvoted for being snarky or because people think that Trump isn't patriotic.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#33

As usual, I find the music in all of the linked videos delusional, as if this high-tech killing machine was created to astonish patriotic five-year-olds. For the sake of analogy, someone should overlay the same music to the engineering of a-bombs and gas chambers.

DIY videos by armed service members often use over-the-top soundtracks. I bet the intent of that video wasn't to be PR or marketing, just a fun recap of work done.

What makes this work "fun"?

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#34

As usual, I find the music in all of the linked videos delusional, as if this high-tech killing machine was created to astonish patriotic five-year-olds. For the sake of analogy, someone should overlay the same music to the engineering of a-bombs and gas chambers.

I agree on at least the first half of your statement. Although I'm not sure I'd say 'delusional' as much as - I don't know? - Jingoistic? Bombastic? I feel like I should be playing Command and Conquer to that sound track. At the end of the day, these are killing machines that are being designed to take human lives, and it does feel more than a bit inappropriate. I think that's what you're getting at with the latter h…

A friend overlaid an EDM track (Flux Pavilion if I recall) on the original test fire videos from several years ago when the prototype was located at the Virginia test site. I enjoyed the short piece of creative they remixed in the same way I enjoyed the Iron Man franchise. It’s a killing machine, but the engineer in me still deeply appreciates the advanced technology these systems are based on (energy/thermal management, power control systems).

SpaceX vehicles are a firmware update away from being high precision ICBMs (and their CEO has said they’d take DoD work and build weapons systems). No one on here is calling for somber treatment of that kit and their YouTube launch streams. Condemn the action, not the tool.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#36

As usual, I find the music in all of the linked videos delusional, as if this high-tech killing machine was created to astonish patriotic five-year-olds. For the sake of analogy, someone should overlay the same music to the engineering of a-bombs and gas chambers.

I listened to it and agree it sounds very childish. Better would have been to have some intelligent narration, the story in a nutshell. How much energy is required for a railgun? What uses do they have that cannot be done with conventional artillery? what were some of the major challenges faced by the R&D team? All of that could have been explained in the audio track that was instead used for crappy Michael Bay actio…

One of the problems with existing Navy "gun ships" is that explosive ordinance can be a hazard to sailors and has to be handled very carefully. Additionally, it has to be stored very carefully. One of the things a railgun hypothetically allows is launching non-explosive inert projectiles. What happen when you launch a big hunk of steel at something 200 miles away travelling Mach 6? Another huge benefit is the speed allows using this for anti-surface and potentially anti-air as well (covered in the article), something conventional munitions can not do.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#37

Earlier quoted context omitted.

DIY videos by armed service members often use over-the-top soundtracks. I bet the intent of that video wasn't to be PR or marketing, just a fun recap of work done.

What makes this work "fun"?

Really hard engineering pushing the limits of physics and materials science is fun, killing people is not.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#38
post #14

Earlier quoted context omitted.

It's just a logo, I think the Railgun only can get to 100 miles or so (at the moment).

Someone a little better with aerodynamic drag computations could do a quick back-of-the-napkin to figure out the maximum range of something fired at sea-level going Mach 3,4,5,6,etc. The biggest issue I see is just vaporizing the projectile on launch, so there would be an upper bound on muzzle velocity based on projectile material properties.

But the US Military uses depleted uranium (the hardest material) for tank rounds, so they could make pretty hardy railgun projectiles.

Re: US Navy's Railgun Now Undergoing Tests in New Mexico

#39

Earlier quoted context omitted.

The absolute dumbest thing about not spending on infrastructure is that it has colossal potential to invigorate any local economy. Huge amounts of labor and materials needed. And usually you're not shipping massive amounts of aggregate across country, it's from nearby quarries. And you're definitely not watching the money disappear overseas.

Plus doesn't infrastructure spending normally result in higher returns than it costs? > A recent Business Roundtable study found that $737 billion in public investment over 10 years would set us on the path toward reviving our national infrastructure. While those numbers seem daunting, the report also showed that every additional dollar invested in infrastructure delivers roughly $3.70 in additional economic growth o…

Yeah. So I forget macroeconomics class from a long time ago. But there's some effect where a dollar changing hands in a local economy 3 or 4 times has a huge multiplicative effect on economic growth.

And being labour and trade intensive means you can campaign on creating jobs for your blue collared workers.

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