Slashdot Mirror


Directed Energy Weapon Downs Ballistic Missile

A**masher writes "In a test off the Califoria coast late last night, Boeing's Airborne Laser successfully destroyed a sub-launched ballistic missile. 'This was the first directed energy lethal intercept demonstration against a liquid-fuel boosting ballistic missile target from an airborne platform,' reported the Missile Defense Agency. It should be noted that destroying a liquid-fueled ballistic missile is generally considered easier than killing a solid-fueled equivalent due to the relative fragility of the fueling and other systems."

11 of 297 comments (clear)

  1. Popcorn and other practical applications by elrous0 · · Score: 4, Funny

    Some people may worry that a laser this powerful could be used to build some sort of spaced-based precision bomber. But don't worry, you'd have to get someone to build you optics for a phase conjugate target tracking system to do something like that. And no one is stupid enough to do that without realizing the implications.

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
    1. Re:Popcorn and other practical applications by mozzis · · Score: 5, Insightful

      To both the idiot who wrote this and the idiot who wrote its parent: One of the most compelling arguments for directed energy weapons, a point I have seen made time after time in briefings, is the reduction and/or elimination of "collateral damage" they will enable. In fact, no one I know in the military even uses the phrase "collateral damage" without a visible reaction of repugnance. The US military, as a matter of strategy and of tactical planning, abhors the idea of killing anyone who is not actively engaging in trying to kill us first. So the billions spent on this project reflect a commitment to that principle, which will be achieved both by the precision of the weapon (especially when used in a tactical engagement) and by its speed and range, which are unique and could possibly eliminate the threat of long-range nuclear weapons forever. THAT was the vision that motivated SDI and the ABL from their beginnings.

      --
      This is not a self-referential sig.
    2. Re:Popcorn and other practical applications by Runaway1956 · · Score: 4, Informative

      Everyone needs a hobby. If he's parroting idiocy, so be it. It's better than SOME hobbies he might take up. Peeping Tom, for instance . . .

      Anyway, on subject - I was more impressed with what I've seen of THEL http://www.missilethreat.com/missiledefensesystems/id.63/system_detail.asp

      That link is as good a place as any to start, if you're interested in it.

      With a military background, I was moderately impressed when it destroyed a missile. Only moderately, because we routinely shot down our own Tartar missiles when they turned around, and targeted US!

      They, they shot down artillery rounds. Without finding the video I watched, I can't recall the size of the artillery rounds, but they were fairly large, fairly slow, with long trajectories that were easy to plot with the computing power available to THEL.

      The real stunner was when THEL destroyed a series of mortars. Quite small, and hard to see, let alone track. Relatively short flight time, compared to most missiles or artillery, despite the fact that mortars are quite in comparison.

      The video I saw were little more than several cuts pasted together - you didn't get a real "feel" for the hardware, because so much was left out, or edited out. The (intended) impression was that THEL was able to knock each of these successive targets out of the air, with little to no effort.

      No matter whether that intended impression is true or not - what THEL did do was impressive. Shooting down a Tartar missile was a minor challenge, one that we pulled off because we ALWAYS tracked it with the guns, from launch to target. We anticipated it turning on us. Incoming artillery or mortars would have been way beyond your capabilities. Incoming missile under real life combat conditions? We'd probably shoot 99's - meaning we would probably get a bunch, but one would eventually get past the guns.

      (BTW - I'm talking about 5 inch 54 caliber main guns on a destroyer - not those close in defense systems that ships have today.)

      --
      "Windows is like the faint smell of piss in a subway: it's there, and there's nothing you can do about it." - Charlie Br
    3. Re:Popcorn and other practical applications by donaggie03 · · Score: 4, Interesting
      Perhaps GP has a flawed view of U.S. foreign policy, but his point remains. Regardless of whether a war or battle or offensive is justified or morally right, once the U.S. military decides on a target then any casualties besides that target and anyone defending that target are considered collateral damage. Once again, whatever the justification of a military strike, they still wish to reduce collateral damage as much as possible. This may be due to a sense of morality in the top brass, or it could be because they realize collateral damage tarnishes America's image and actually pushes more people to the dark side. Or maybe it is a little of both . .

      Either way, your arguments do not change the fact that American military policy is to reduce collateral damage, and that these weapon advances help in that regard.

      --
      Three days from now?? Thats tomorrow!! ~Peter Griffin
  2. Wrong Platform by VorpalRodent · · Score: 4, Funny

    The article indicates that this is the first demonstration from an airborne platform. However, I am significantly more interested in the application of directed energy weapons from certain aquatic platforms.

    --
    Take it to the limit, everybody to the limit, come on, everybody fhqwhgads.
  3. Re:Don't be interested yet, headline is incorrect by RealErmine · · Score: 4, Informative

    Nothing was destroyed or shot down and the laser weapon was not fired.

    This article says that you are wrong.

    Finally, the ALTB fired its megawatt-class High Energy Laser, heating the boosting ballistic missile to critical structural failure...

    Less than one hour later, a second solid fuel short-range missile was launched from a ground location on San Nicolas Island, Calif. and the ALTB successfully engaged the boosting target with its High Energy Laser, met all its test criteria, and terminated lasing prior to destroying the second target. The ALTB destroyed a solid fuel missile, identical to the second target, in flight on February 3, 2010.

    Summary: the ALTB engaged and destroyed a liquid fueled target and then engaged, but did not destroy, a solid fueled target. The megawatt class laser was fired in both cases.

    --
    Dewey, you fool! Your decimal system has played right into my hands!
  4. Already Obsolete (Go Navy!) by tjstork · · Score: 4, Informative

    The problem with the ABL is that it is a chemical laser based system and as such it is almost already obsolete in the laboratory. Chemical lasers have huge logistical problems and can only fire so many shots, and require huge space, which is why the ABL has cost a fortune and requires a 747.

    The future really belongs to the Free Electron Laser, which is making leaps and bounds. If we were to wave the mantra of intraservice rivalries around, then one should say that while the US Navy has had an awful time actually building ships, they've pretty much been whipping on the US Air Force when it comes to both aircraft and lasers and missile defense systems.

    Jefferson labs has pushed a Free Electron laser to 14kw.

    http://www.jlab.org/fel/

    And, the US Navy has Raytheon has been awarded a contract for a 100KW Free Electron Laser

    http://raytheon.mediaroom.com/index.php?s=43&item=1292&pagetemplate=release

    And indeed, some are noting that it will soon be possible to carry these things in the nose of a fighter aircraft, not just a 747.

    --
    This is my sig.
    1. Re:Already Obsolete (Go Navy!) by ZombieWomble · · Score: 5, Informative
      Chemical lasers are far from obsolete, and the place they're still useful is this exact type of continuous high-power application. Jefferson may have pushed a FEL to 14 kW, but the laser bolted to the plane delivers megawatts of continuous power.

      I have no doubt that FELs will eventually surpass chemical lasers for this sort of application, but right now they're nowhere near ready for this sort of application. And if you think back the 15 years or so to when this project was conceived, they were even less ready. I'm sure the upgrade to FELs will come along sooner or later, but choosing them for the first-generation design would probably have delayed this project quite a considerable amount.

  5. Lasers vs. Railguns by Xest · · Score: 4, Funny

    My money is on railguns being the most practical weapon first:

    http://gizmodo.com/351467/navy-rail-gun-test-destroys-everything-it-touches-at-5640-mph

    Besides, lasers are a bit girly, they're just like overpowered flashlights ;) There's something more manly about accurately launching a solid lump of metal 200 miles at just short of mach 8!

  6. Re:Apparently Reuters Fails at Journalism by RingDev · · Score: 4, Insightful

    I would hesitate to call Reuters a "left-wing" organization. They are driven by profits, if there is a larger profit to be made catering to the left, so be it, but they will report with bias to any side of the political spectrum if there is money in it. If it bleeds, it leads, it doesn't matter if it's a liberal or a conservative.

    This case in specific, being a pro-military grade weapon R&D summary would IMO be considered slightly more to the right as most lefties I know are in favor of reducing military spending. If Reuters were a left-wing organization, I would have expected this article to point out how bloated, behind schedule and over budget the MDA is on almost all of its projects. I would expect them to drop the names of the congressmen/senators who sponsored the bill/amendment to get this project funded, and I would expect them to make some point about how the money could be better spent.

    On the other hand, if Reuters was a "right-wing" organization, I would have expected this article to include a list of congressmen/senators who opposed the project, an iteration of countries that have missiles that this device could disable, and a number of warnings about terrorist, NBC warheads, and something to do with Sarah Pallin.

    What we have though, is an article that appears to be keeping to a limited scope of facts. Although it gets a number of these facts wrong, I'm not seeing a whole lot of bias, just incompetence.

    -Rick

    --
    "Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
  7. Re:Great. by goodmanj · · Score: 4, Informative

    An impressive amount of wrong in a one-line post.

    1) This is a boost-phase defense, so it works when the missile is over the hostile country, not over the U.S.
    2) Because of Russia's size, we probably won't be able to use this weapon against them unless they let us fly our airborne laser over their country, which is unlikely. This is for defending against launches by smaller countries.
    3) It's pretty much impossible to cause a nuke to detonate by firing a weapon at it.
    4) Debris from a shot-down nuke may be unhealthy if it lands on your house, but it's a whole lot better than vaporizing Manhattan.