Navy Moving Ahead With Railgun Devo

Here’s a little story that’s been making the Internet rounds lately; the Navy is about to take one more step toward making high-powered railguns a ship-board reality. Yup, the Office of Naval Research is about to start test firing a BAE Systems-built railgun and another made by General Atomics (watch a badass video of the GA gun in action here.)

Basically, railguns use a ton of electromagnetic energy to push a projectile out of a barrel made of two long rails at hypersonic speeds (up to 5,600 miles per hour) and over distances of up to 50 to 100 nautical miles (maybe even 200 nautical miles someday). Needless to say, their speed and range give these guns enormous potential for use in everything from shooting down enemy planes and missiles to blasting enemy ships and even targets well inland.

For some prespetive on how powerful these thing are, the BAE Systems gun that just arrived at the Navy’s surface warfare in Dahglren Maryland uses 32 megajoules of energy when firing. “One megajoule of energy is equivalent to a 1-ton car traveling at 100 miles per hour,” reads a Navy press release on the weapons.

The Navy is also paying Raytheon, BAE and General Atomics $10 million each to design rapid loading and firing systems that will allow new classes of railguns to fire six to 10 rounds a minute.

Click through the jump to read the sea service’s announcment on the weapons.

The Office of Naval Research’s (ONR) Electromagnetic (EM) Railgun program will take an important step forward in the coming weeks when the first industry railgun prototype launcher is tested at a facility in Dahlgren, Va., officials said Feb. 6.

“This is the next step toward a future tactical system that will be placed on board a ship some day,” said Roger Ellis, program manager of EM Railgun.

The EM Railgun launcher is a long-range weapon that fires projectiles using electricity instead of chemical propellants. Magnetic fields created by high electrical currents accelerate a sliding metal conductor, or armature, between two rails to launch projectiles at 4,500 miles per hour to 5,600 miles per hour.

With its increased velocity and extended range, the EM Railgun will give Sailors a multi-mission capability, allowing them to conduct precise naval surface fire support, or land strikes; cruise missile and ballistic missile defense; and surface warfare to deter enemy vessels. Navy planners are targeting a 50- to 100-nautical mile initial capability with expansion up to 220 nautical miles.

The EM Railgun program, part of ONR’s Naval Air Warfare and Weapons Department, previously relied upon government laboratory-based launchers for testing and advancing railgun technology. The first industry-built launcher, a 32-megajoule prototype demonstrator made by BAE Systems, arrived at Naval Surface Warfare Center (NSWC) Dahlgren Jan. 30. One megajoule of energy is equivalent to a 1-ton car traveling at 100 miles per hour.

“This industry prototype represents a step beyond our previous successful demonstrations of the laboratory launcher,” Ellis said.

The prototype demonstrator incorporates advanced composites and improved barrel life performance resulting from development efforts on the laboratory systems located at the Naval Research Laboratory (NRL) and NSWC-Dahlgren. The EM Railgun laboratory demonstrator based at NSWC-Dahlgren fired a world record setting 33-megajoule shot in December 2010.

The industry demonstrator will begin test firing this month as the EM Railgun program prepares for delivery of a second prototype launcher built by General Atomics.

In the meantime, the Navy is pushing ahead with the next phase of the EM Railgun program to develop automatic projectile loading systems and thermal management systems to facilitate increased firing rates of the weapon.

“The next phase of the development effort is to demonstrate the ability to operate at a firing rate of significant military utility,” Ellis said.

ONR recently awarded $10 million contracts through Naval Sea Systems Command to Raytheon Corp., BAE Systems and General Atomics to develop a pulsed power system for launching projectiles in rapid succession. These new contracts kick off a five-year effort to achieve a firing rate of six to 10 rounds per minute.

BAE Systems and General Atomics also are commencing concept development work on the next-generation prototype EM Railgun capable of the desired firing rate.

26 Comments on "Navy Moving Ahead With Railgun Devo"

  1. The gun that saved the world in Transformers 2…

  2. For perspective, the Mk 7's (the Iowa's 16 inch guns) fired projectiles of mass ~850-1200 kg at ballpark velocity of 820 m/s. 403 MJ.

    For the two thousand pound car (908 kg) at 100 mph (44.7 m/s) a quick KE calculation gives me 9e5 joules, so ~900 kJ. Impressive, but off from a megajoule.

  3. Correction:

    The facility is Naval Surface Warfare Center (NSWC) Dahlgren, Virginia, not "Navy's surface warfare in Dahlgren Maryland."

  4. Pretty cool. With that kind of range and velocity I wonder if they've thought about anti-satellite capabilities and even scaling the technology up for orbital payloads. A destroyer that can launch its own spy satellite…eat your heart out NASA!

  5. we should pull NASA funding and use it for this, this is the best investment for space exploration

  6. This is cool, but the Navy's $$$ is better spent saving ship building programs from being cut.

  7. The age of battle ship coming back?

  8. So, where's the link to the video?

  9. 1 MJ (or 900 kJ, pretty close) is not to be sneezed at. It's about 250 dietary calories, about what you get from a regular hamburger . (To be fair, the hamburger needs more than its own mass in oxygen from the atmosphere to yield the MJ.)

  10. Waste of money right now. Keep funds for LCS and DDG1000 ships keep this on back burner till funds return.

  11. I think the railgun is a great weapon potentially however more for BMD and such direct fire roles than long range over the horizon fire support.

    The real problem is that the round is going to be under g's at launch that will be insanely expensive to deal with. guided rounds are probably going to be so expensive its worthless. However unguided would be a killer for ballistic missiles and such.

    Would rather see a say a Modern nuclear powered pocket battleship with 6 16in cannons in triple turrets. These could then fire shells with far more firepower than the AGS system or even this railgun. Modern technology is well able to handle the FPS these rounds would travel at and the ships could have secondary VLS or launchers like the Iowa's had for Tomahawks.

    Hell even 6-8 MK-71 8in cannon would do fine. The whole reason they canned the program was because they offered no better acuracy than the 5in the navy currently uses….but sense the AGS only fires guided rounds that no longer holds any air.

  12. 4FingerOfBourbourn | February 9, 2012 at 10:13 pm |

    All this money talk. If this works out, with on board nuclear power in some cases. Think of the projectile cost savings, safety and handling compared to live ordinance now…word

  13. I look forward to the day that America's Navy has ships fitted with a 10 million dollar railgun that fires hundreds or even thousands of 1000 dollar projectiles, instead of a Navy that has ships fitted with a few dozen to a bit over 100 10 million dollar missiles… Just saying, this will make naval warfare cheaper… Oh, and maybe give those marines over at ANGLICO some actual Naval Gunfire to coordinate…

  14. this has great potential, restoring ships to their Dreadnought glory days, able to blast sea and land targets with incredible power and range, at a low cost

    I see trouble for guided munitions, because the g-forces they would have to survive would be incredible, making them extremely costly. maybe use unguided rounds to target airfields, ships and military bases, and guided rounds for anything else

    combined with lasers as defensive weapons, this would make ships impossible to attack with anything but other railguns and maybe torpedoes

  15. I think 1000 projectiles rail gun more fire power than 100 missiles.

  16. You have to love the rail-gun, its such a fundamentally bad idea on so many levels its practically a disarmament program.

  17. Is EMP a concern with weapons like this? Could it render them useless? Or is everything so electronic nowadays that a big EMP would wipe out the rest of the electronics anyway?

  18. now all we need to do is make a REALLY BIG one, and put it on a walking tank.

  19. "Do you really need rail guns to kill Pirates, Mr Secretary of the Navy?", says the Congresswomen on the Armed services Committe….. "The kids my district have been left behind, & you want me to approve money for your wonder weapons?"

    CSPAN dream sequence.

  20. I see several negative comments. No matter what is eventually built and possibly used on a naval warship the investment in research and developement is very useful and may yield other technologies that may win us a war.

  21. I thought the rail-gun program was dead …

    Good news that it isn't …

    Nice to see that someone in the Pentagon has a brain …

  22. Wonder how effective all those cutting-edge multi-megajouled projectiles will do against sub-launched torpedoes?

    My guess is that it's yet another pricey, cover-complicated weapon better suited to bullying folks who can't fight back, than for fighting real adversaries.

  23. *over-complicated*

  24. CoCowboy692000 | February 14, 2012 at 7:37 am |

    My gut tells me that, if we're hearing about this now, we're about 10 years behind where they are. I saw this being built on Science Channel in some dudes garage and tested no less… It fried the speed gun they were using to test the speed of the projectile. That was about 3 years ago… So, It wouldn 't surprise me if they're either already armed on the ships, or ready to arm our ships… It's not like they keep us up to date in real time on stuff like this – think about it…

  25. Are we hitting the beaches any time soon?

  26. The size of the guns and the scale and frequency of use would really determine if this weapon is a good idea or not. Theoretically, it should be superior to normal artillery. But real life is always different than theory. People keep on forgetting that the ammo can be anything that can survive the launch and high speeds. So properly made, that's anything. In space there are even more applications. There are less applications under water, but still even that is an option. The launcher does not solely have to be used for combat. There are many applications. Just keep that in mind when deciding if it is an effective device.

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