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[UG] Navy To Deploy Railgun In 2016 - Page 2

post #11 of 170
Quote:
Originally Posted by DuckieHo View Post

The mechanics and physics of railguns are simple and very-well understood. It's the engineering of scaling it up (i.e. material stress, power requirements, etc) that are hard.

Anyone can build a railgun for over a century. However, making it usable as a real weapon is the hard part.

Yup.

The big issue back in the 80's was keeping them together. We were capable of making them, as we have been for many decades, but they were a bit of a one shot wonder. Known materials and engineering weren't able to tolerate the stresses, and after the initial shot they were destroyed. Not necessarily in the ultra violent and catastrophic way, but enough to make another shot dangerous and ineffective.
Quote:
Originally Posted by Valor958 View Post

Sure, low end rail gun tech may be inefficient at first glance with the figures you throw in, BUT it can scale basically infinitely. MOAR POWER = MORE DESTRUCTION. Also, who cares about efficiency for power when you have to look at efficiency for cost. Each freaking tomahawk missile is about $1mil USD... cost for firing railgun? Less than $1 USD per shot I'd imagine.
Costs of development? Tens of millions... ok, so cost of 10-15 tomahawk missiles pays for the years of research, and maybe 100-200 missiles for the entire project. Consider how they throw away those things like bird seed to said seagulls during a conflict, I'd say the costs are extremely efficient.
In the end result, maybe 10-20 years down the line, mount a powerful enough railgun in a remote area and it can hit nearly anywhere on Earth with proper calculations. Inertia is a b*tch!
And before anyone tries to tear me or my statements apart... I'm no research scientist for this group, but do understand the basic principles and have followed news on the project for years... I tend to leave the work to the real scientists on the project. THEY know what they're doing and most delays are from the bureaucracy they're stuck in.

Going to chime in just a bit here, as my father was an engineer on some of these rail gun projects in the 80s......

It costs a lot more to fire these weapons than a $1, and it costs more than tens of millions to develop them.

In the 80s they had power plants the size of several large city blocks built, just to power some of the photo-types of these weapons. Each test firing was phenomenally expensive, of course as technology advances those costs did/do come down. Just not down to the $1 per shot range biggrin.gif. This cost ignoring the fact that each proto-type was more or less made worthless after each test fire due to the stresses on the material.

Also, there isn't a lot of bureaucracy at the ultra high levels of classified work (rail gun development fell into this category in the 80s). These guys are pretty much given a blank check on what they can spend and how they spend it. The U.S. government contracts these companies out under a certain "budget", but those aren't generally followed. It was/is more of a "get it down, no matter what" when it comes to our war weapons.

Just one of the several contracts was in the multiple billions, and this was back in ~1981!
Edited by PostalTwinkie - 4/8/14 at 8:07am
    
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post #12 of 170
Quote:
Originally Posted by Valor958 View Post

Sure, low end rail gun tech may be inefficient at first glance with the figures you throw in, BUT it can scale basically infinitely. MOAR POWER = MORE DESTRUCTION. Also, who cares about efficiency for power when you have to look at efficiency for cost. Each freaking tomahawk missile is about $1mil USD... cost for firing railgun? Less than $1 USD per shot I'd imagine.
Costs of development? Tens of millions... ok, so cost of 10-15 tomahawk missiles pays for the years of research, and maybe 100-200 missiles for the entire project. Consider how they throw away those things like bird seed to said seagulls during a conflict, I'd say the costs are extremely efficient.
In the end result, maybe 10-20 years down the line, mount a powerful enough railgun in a remote area and it can hit nearly anywhere on Earth with proper calculations. Inertia is a b*tch!
And before anyone tries to tear me or my statements apart... I'm no research scientist for this group, but do understand the basic principles and have followed news on the project for years... I tend to leave the work to the real scientists on the project. THEY know what they're doing and most delays are from the bureaucracy they're stuck in.

Railguns cannot scale up infinitely due to limits of material science....

Each shot will cost quite a bit more than $1USD..... precision military-grade slugs ($25K each), banks of capacitors, the massive amount of power, and the barrel wears all factor into the cost. So while it is less than $1M, it is a few order of magnitudes higher than what you think.

The cost of development has been about $240M over 10 years.... again, a magnitude higher than what you said.

All this information is public knowledge and would only take a few seconds to lookup. Rather than making numbers up, then do the work and contribute to the discussion meaningfully.
Edited by DuckieHo - 4/8/14 at 8:08am
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post #13 of 170
Thread Starter 
Quote:
Originally Posted by Exidous View Post

The biggest benefit is the lack of explosive needed for the desired effect. MUCH less shrapnel.

The rail gun scene really was awesome in transformers.

I'm just waiting for this tech to trickle down to the consumer market.

How awesome would it be carrying a pocket size railgun around?

Who needs a Glock when you've got a freaking RAILGUN? yessir.gif
post #14 of 170
Quote:
Originally Posted by frickfrock999 View Post

I'm just waiting for this tech to trickle down to the consumer market.

How awesome would it be carrying a pocket size railgun around?

Who needs a Glock when you've got a freaking RAILGUN? yessir.gif

The Noisy Cricket!
    
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post #15 of 170
Quote:
Originally Posted by frickfrock999 View Post

I'm just waiting for this tech to trickle down to the consumer market.

How awesome would it be carrying a pocket size railgun around?

Who needs a Glock when you've got a freaking RAILGUN? yessir.gif

You can already build your own rail or coli/gauss gun. The limitation is in the power source. (Personally, I plan on building one once my kids are older to enjoy the process.)

People have.
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post #16 of 170
Wow the Quake railgun is becoming a reality! lol!
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post #17 of 170
Quote:
Originally Posted by DuckieHo View Post

You can already build your own rail or coli/gauss gun. The limitation is in the power source. (Personally, I plan on building one once my kids are older to enjoy the process.)

People have.

Totally just quoted yourself /win lol

Noisy Cricket is where it's at.

Transformers was really bad. That scene was awesome. Worst part was I was working in a TACP squadron at the time the movie came out (guys in the trenches that call in "the rain"). It was SO hollywooded up that it almost made it unbearable.

Tyrese's promotions were nothing short of rediculous too. Look at his rank throughout the movies. That's 15 years of service easy but he did it in 2 - 3 movies.
post #18 of 170
Quote:
Originally Posted by Exidous View Post

Totally just quoted yourself /win lol

Noisy Cricket is where it's at.

Transformers was really bad. That scene was awesome. Worst part was I was working in a TACP squadron at the time the movie came out (guys in the trenches that call in "the rain"). It was SO hollywooded up that it almost made it unbearable.

Tyrese's promotions were nothing short of rediculous too. Look at his rank throughout the movies. That's 15 years of service easy but he did it in 2 - 3 movies.

Of course it only took 2-3 movies, for a total of 6(ish) hours of combat saving the planet.

Each hour of alien destroying, planet saving, robot fueled combat is equal to a solid 5 years of real military work.....right?

Especially when you have the Michale Bay Accelerator Testing method behind you......
    
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post #19 of 170
Quote:
Originally Posted by DuckieHo View Post

You can already build your own rail or coli/gauss gun. The limitation is in the power source. (Personally, I plan on building one once my kids are older to enjoy the process.)

People have.

It gets interesting when you start making multistage optically triggered coil guns , But to get the best efficiency out of them the coils and capacitors for each stage have to be made so that the current pulse duration is shorter and shorter as the projectile speeds up to avoid suck back . ( when using SCRs as switches ) , if IGBTs are used then you can slam the on and off to at the right times , problem is finding IGBTs with pulse ratings like SCRs for the same price biggrin.gif

Coil guns rely on purely magnetic coupling to transfer energy to the projectile ( no direct connection to the energy storage caps ) , where a rail gun has the projectile as a part of the current path .

The main thing with a rail gun is the current passes though the projectile its self and the friction between the rails and projectile causes losses among there things and ware on the rails , I have no idea on how the current pulse is shaped , id guess big inductors to control the pulse and keep current flowing till the projectile leaves the rails and exits .
Edited by TwirlyWhirly555 - 4/8/14 at 8:30am
    
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post #20 of 170
Can I buy one for myself?
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