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Navy Gets 8-Megajoule Rail Gun Working

prototypo writes "The Free Lance-Star newspaper is reporting that the Navy Surface Warfare Center in Dahlgren, Virginia has successfully demonstrated an 8-megajoule electromagnetic rail gun. A 32-megajoule version is due to be tested in June. A 64-megajoule version is anticipated to extend the range of naval gunfire (currently about 15 nautical miles for a 5-inch naval gun) to more than 200 nautical miles by 2020. The projectiles are small, but go so fast that have enough kinetic punch to replace a Tomahawk missile at a fraction of the cost. In the final version, they will apex at 95 miles altitude, well into space. These systems were initially part of Reagan's SDI program ("Star Wars"). An interesting tidbit in the article is that the rail gun is only expected to fire ten times or less per day, presumably because of the amount of electricity needed. I guess we now need a warp core to power them."

26 of 650 comments (clear)

  1. Where can I get one? by Anonymous Coward · · Score: 5, Funny

    I'm a member of the NRA, I didn't see this in the last catalog.

  2. Power Sources by nick_davison · · Score: 5, Funny

    An interesting tidbit in the article is that the rail gun is only expected to fire ten times or less per day, presumably because of the amount of electricity needed.

    If only we knew when lightning was due to strike some sort of a clock tower? Surely, then, we could harness the power needed.

    If that doesn't work, perhaps some new technology involving trash?

  3. boom! by User+956 · · Score: 3, Funny

    The Free Lance-Star newspaper is reporting that the Navy Surface Warfare Center in Dahlgren, Virginia has successfully demonstrated an 8-megajoule electromagnetic rail gun.

    Yeah, but can you headshot with it from the far platform on the Longest Yard?

    --
    The theory of relativity doesn't work right in Arkansas.
  4. sooo... by Anonymous Coward · · Score: 5, Funny

    by June they'll get the quad-damage powerup working?

  5. Re:I don't see them replacing crusie missles by ackthpt · · Score: 5, Funny

    if you can only fire 10 per day.

    I'd be very careful accounting for winds over a distance of 200 miles, particularly where chinese embassies are located. Must be a hell of a job to be spotter for this kind of weapon.

    --

    A feeling of having made the same mistake before: Deja Foobar
  6. Not sure about this by thewils · · Score: 5, Funny

    It will allow the US Navy to miss targets from much further away.

    --
    Once I was a four stone apology. Now I am two separate gorillas.
  7. Admiral Gates by Anonymous Coward · · Score: 5, Funny

    A 32-megajoule version is due to be tested in June. A 64-megajoule version is anticipated to extend the range of naval gunfire (currently about 15 nautical miles for a 5-inch naval gun) to more than 200 nautical miles by 2020.

    Nobody will ever need more than a 64 Megajoules rail gun.

  8. Forget Replacing Cruise Missiles... by Wandering+Wombat · · Score: 5, Funny
    ... these would almost replace Navies.


    Come on, if you could fire a projectile 200 miles, you could just mount these on coastlines, serviced by ground-based power plants. True, it wouldn't replace navies ENTIRELY, but it would suddenly become extremely UN-economical to have one with even the slightest capability to get near a shoreline. Pushing back aircraft carriers 200 miles would severely reduce the flight time of the planes, which now have to fly a lot farther just to get to the coastline, let alone targets inside countries.

    On the plus side, land-locked countries can now hunt whales for food. :)

    --
    I like to place meaningful quotes in my sig, so people will know that I know what meaningful quotes are.
  9. Comment removed by account_deleted · · Score: 2, Funny

    Comment removed based on user account deletion

  10. Comment removed by account_deleted · · Score: 3, Funny

    Comment removed based on user account deletion

  11. Re: 95 miles altitude is space..Way Cool by Anonymous Coward · · Score: 5, Funny

    Parent recap:

    1. *some idea*
    2. "use robots with ion drives for that stuff"
    3. profit!

  12. The spinal tap offense by lexsco · · Score: 2, Funny

    Shoot 11 missiles at the ship, when everyone else shoots 10.

  13. Re:I don't see them replacing crusie missles by 'nother+poster · · Score: 2, Funny

    Conservation of energy doesn't exist in your world? Here where I live when you transfer the electrical energy to kinetic energy to launch the warhead the electricty is no longer available for use since it is now kinetic energy in the warhead.

  14. I saw something like this in use by Picass0 · · Score: 3, Funny

    This reminds me of a proof-of-concept model built by by Dr. Emmett L. Brown, except he was capable of creating greater acceleration using only twenty-one gigawatts of electricity, and he utilized flux-capacitor technology which did not require overhauls after every use.

  15. Remo Williams, not lobbyists by iceperson · · Score: 3, Funny

    HARP died because Remo found out it was all a scam.

  16. Railgun Campers by Randolpho · · Score: 3, Funny

    Wow, 200 posts, and not one complaint about railgun campers. I guess nobody plays Quake anymore.

    --
    "Times have not become more violent. They have just become more televised."
    -Marilyn Manson
  17. What 90% of Slashdot readers are thinking ... by rlp · · Score: 3, Funny

    I WANT ONE! (The other 10% are holding out for the 64 megajoule model).

    --
    [Insert pithy quote here]
  18. Re: 95 miles altitude is space..Way Cool by javamann · · Score: 4, Funny

    'High School Math', mmmm let's see, if Billy has a quarter ounce of pot and six people in his van how many joints can he make before they drive to Mc Donalds for munchies?

  19. Re: 95 miles altitude is space..Way Cool by p3d0 · · Score: 5, Funny

    Yes, as soon as the moon moves to within 95 miles altitude.

    --
    Patrick Doyle
    I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
  20. Re: 95 miles altitude is space..Way Cool by bullshit+detector · · Score: 5, Funny

    so a shot of 100 tons of titanium a day could well make a moon mining facility profitable
    Even more profitable would be to make Earth pay you NOT to lob 100 tons of titanium at them per day.

    TANSTAAFL

  21. Re:I don't see them replacing crusie missles by MrNaz · · Score: 2, Funny

    House: Warning, you currently appear to be a state of diminished mental capacity. You are about to trip over your coffee table. You (drunk): Shuddup yer stupid piece of jun.. *THUD* Aargh! My leg! House, call me an ambulance! House: Affirmative, your hot bath will be ready in approximately 3 minutes.

    --
    I hate printers.
  22. Piece of cake. by raehl · · Score: 5, Funny

    Use the rail gun to launch a big, heavy projectile into orbit.

    Attach projectile to giant bungee cord.

    Attach giant bungee cord to object you want in orbit.

    Give object giant scissors.

    Expanding on this, you could tie one object with several rubber bands to several projectiles.

  23. Hot rod by Climate+Shill · · Score: 2, Funny

    Apparently this gun will fire a Ford Taurus at 380mph.

    Does anyone know if Clarkson or Hammond have expressed an interest ?

  24. Re: 95 miles altitude is space..Way Cool by danlock4 · · Score: 4, Funny
    Why do navel ships have an abundance of electricity? I can come up with some guesses, but it's just hand waving.
    Navel ships require an umbilical of some type; electricity is often provided through the umbilical.

    ;-)
    --
    To .sig or not to .sig, that is the question.
  25. Re: 95 miles altitude is space..Way Cool by YrWrstNtmr · · Score: 2, Funny

    unless we want hundred ton slugs of titanium to be the next-gen strategic weapon.

    Put big enough wings on it, and you can steer it in just like a 747.

  26. Re:Power is relative, I guess. by Anonymous Coward · · Score: 1, Funny

    Yeah, sure.

    Spin a 400 ton wheel at 400 rpm inside a cruiser and try to get the energy out of it within the second:

      The result:

    A cruiser spinning at 200 rpm in the other direction !!

    Now sunny, keep aiming at the target no matter what!!