Slashdot Mirror


U.S. Developing 100-Kilowatt Laser for Strike Fighters

redwolfoz writes "New Scientist reports that American defence contractors, Lockheed Martin and Raytheon, are developing a 100-kilowatt infrared laser weapon for the F35 Joint Strike Fighter that may be powerful enough to blind people on the ground, even if they are relatively far from the target."

15 of 653 comments (clear)

  1. France prepares defenses by Mr+Guy · · Score: 5, Funny

    In a related story, American troops have been seen rolling large tinfoil balls filled with an unknown substance into strategic locations around France.

  2. The Real Ultimate Power by Anonymous Coward · · Score: 5, Funny

    Hi, this is site is all about airborne lasers, REAL AIRBORNE LASERS. This site is awesome. My name is Robert and I can't stop thinking about airborne lasers. They are cool; and by cool, I mean totally sweet.

    Facts:

    1. Airborne lasers are lasers.
    2. Airborne lasers fight ALL the time.
    3. The purpose of the airborne laser is to flip out and kill people.

    Weapons and gear:

    laser

    Testimonial:

    Airborne lasers can kill anyone they want! Airborne lasers kill people ALL the time and don't even think twice about it. They are so crazy and awesome that they flip out ALL the time. I heard that there was this airborne laser who was flying around in the sky. And when some bird crapped on it the airborne laser killed the whole flock. My friend Mark said that he saw an airborne laser totally evaporate some dog just because the dog opened a window.

    And that's what I call REAL Ultimate Power!!!!!!!!!!!!!!!!!!

    If you don't believe that airborne lasers have REAL Ultimate Power you better get a life right now or they will chop your head off!!! It's an easy choice, if you ask me.

    Airborne lasers are sooooooooooo sweet that I want to crap my pants. I can't believe it sometimes, but I feel it inside my heart. They are totally awesome and that's a fact. Airborne lasers are fast, smooth, cool, strong, powerful, and sweet. I can't wait to start flying next year. I love airborne lasers with all of my body (including my pee pee).

    Q and A:.

    Q: Why is everyone so obsessed about airborne lasers?
    A: Airborne lasers are the ultimate paradox. On the one hand they don't give a crap, but on the other hand, airborne lasers are very careful and precise.

    Q: I heard that airborne lasers are always cruel or mean. What's their problem?
    A: Whoever told you that is a total liar. Just like other lasers, airborne lasers can be mean OR totally awesome.

    Q: What do airborne lasers do when they're not vaporizing people or flipping out?
    A: Most of their free time is spent flying around, but sometime they land. (Ask Mark if you don't believe me.)

  3. Thier Mom Should Have Warned Them by The+Dobber · · Score: 5, Funny

    You could put an eye out with those things.

  4. Re:blinding people violates geneva convention by ocbwilg · · Score: 5, Interesting

    blinding people violates geneva convention

    Only if that was the intended effect of the weapon. If it's a laser weapon that is designed for use against planes, anti-aircraft installations, and ground vehicles that could accidentally blind someone standing nearby, it's considered legit.

  5. collateral damage ... by Daniel+Dvorkin · · Score: 5, Insightful

    ... as they like to say, meaning, "Stuff that the weapon did other than what it was supposed to do." Like the article says, this isn't a blinding weapon; it's an honest-to-god laser gun (as opposed to the laser targeting systems we've been using for quite some time.) It's designed to blow up or disable vehicles, artillery emplacements, etc. Might people nearby be blinded by reflections? Sure, and people nearby when a bomb hits might be blinded (or worse) by shrapnel. I think this is much ado about nothing, to tell the truth. Battlefields are dangerous places. No amount of tech is going to change that.

    --
    The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
  6. The problem isn't blinding by foo+fighter · · Score: 5, Funny

    The real problem is getting the axis of evil to use blue lasers while the allies use red lasers.

    Go Joe!

    --
    obviously no deficiencies vs. no obvious deficiencies
  7. kW IR lasers by caveat · · Score: 5, Informative

    I was always under the impression that a kilowatt laser wasn't that impressive
    you have been watching too much real genius. one of my friends works with a multiple-laser mass spectrometer over in atmospheric sciences (the Single Particle Laser-Ablation Time-of-flight Mass Spec, SPLAT-MS, if you're curious) - they have a 1.5 watt, 20ms pulsed CO2 (infrared, same wavelength range the military wants to use) laser that will cause third-degree burns if you put your hand in the beam for *two pulses*. now this laser they're talking about is a 100kW; i don't know if the solid-state is less efficient than the gas laser, but either way there's still going to be a lot more than 1.5W coming out, for a lot longer than 20ms. i'd like to see what happens if you blast a chunk of asphalt with that sucker - the SPLAT laser makes little firepuffs of burning tar vapor; the military laser would probably "ablate" (vaporize) the entire rock. and to ice the cake, IR laser emission is totally invisible, even the scattered stuff...

    --

    Facts do not cease to exist because they are ignored. - Aldous Huxley
  8. Re:blinding people violates geneva convention by sql*kitten · · Score: 5, Interesting

    Only if that was the intended effect of the weapon. If it's a laser weapon that is designed for use against planes, anti-aircraft installations, and ground vehicles that could accidentally blind someone standing nearby, it's considered legit.

    It's entertaining, but a little worrying to see how military lawyers interpret things like the Geneva Convention and other documents supposedly governing the acceptable conduct of war. One example is the use of White Phosphorous, a powerful incendiary distributed over a target area using explosives. It comes in everything from grenades to mortars to bombs. Due to the horrific burns it causes, it is prohibited for use against personnel, but can be used against materiel, i.e. equipment. This is a matter of interpretation, after all, rifles and backpacks are equipment, they just happen to often be found in close proximity to enemy soldiers!

    It's important to understand that the West is supreme in battle not because of divine right or objective moral superiority, but rather because our culture has elevated warfare to its most efficient. It is debatable whether wholesale blinding of enemy soldiers (and indeed, any civilians who happen to be in the vicinity) is more or less humane than the traditional form of battle, in which some individuals are wounded and killed, but the majority, even in the defeated army, escape more-or-less unscathed.

  9. Re:Ummm... by Chris+Burke · · Score: 5, Interesting

    The point is the definition of "large". The article suggests that reflections from the laser could blind from several kilometers away, which in contrast is an unlikely distance to be struck by shrapnel.

    "Surgical strike" won't look so good in the PR if even on a perfect hit you end up blinding everyone looking out the window of a hospital three kilometers away.

    --

    The enemies of Democracy are
  10. Better story on Aviation Leak by A+nonymous+Coward · · Score: 5, Informative

    Here. Also being considered for the AC-130 gunship. Explanation of aiming problems, one turret or two, etc. Much more detail.

  11. Re:Um. by sql*kitten · · Score: 5, Insightful

    I have a question: how practical is this, really? The article tells us that you get two four-second shots, spaced four seconds apart, and the laser then needs 30 seconds to cool down. This is hardly what I'd call a practical battlefield weapon, especially given the modern war methodology of one well-coordinated, completely overwhelming attack. Why use a laser with such poor fire times?

    The first rifles were single-shot muzzle-loaders, mostly made of wood, that required the user to mess around with gunpowder, flint and small lead balls. They were effective only over very short ranges, and it took a well trained user to get out more than one shot per minute. In the grand scheme of things, it didn't take them long to evolve from there into the 20mm Vulcan cannon firing 100 explosive rounds every second.

  12. Re:4 seconds is enough by sql*kitten · · Score: 5, Insightful

    If we put half as much $ and effort into figuring out how to cure diseases and end poverty, as we do into these fucking Dr. Strangelove, penis-waving weapons systems...

    Oh, we already know how to prevent plagues and famines. Why do you think they've been unknown in the West (including Japan and Australia) for centuries? Because liberal, democratic capitalism pretty much works. The countries that do suffer from plagues and famines on a regular basis are anarchies or feudal states (varies parts of Africa) or Communist (North Korea) or under some other form of totalitarian government (Iraq, Afghanistan, until recently).

    The situation will continue until one of two things happen. One possibility is that these countries establish governments and economies like ours. The other is that one or more Western powers simply conquers them and establishes an Empire. The British tried this, and it worked remarkably well, it was only when they got bored and went home that the former provinces of the Empire reverted to poverty and neglect. The US is doing this in Afghanistan as we speak, and will probably do it in Iraq at some point too (to get back on topic, maybe using laser weapons).

  13. Re:Inhumane Weapons by mellifluous · · Score: 5, Insightful
    Sadly, all weapons are inhumane. You may find this hard to believe, but our military is actually one of the most principled in the world when it comes to the Geneva convention and other humanitarian considerations. Granted, it's not perfect, but it is among the best.

    There are no good answers to these questions, but a laser weapon would actually give the military a lot of new options for disabling targets without harming anyone. Let's say I want to stop a truck convoy from the air. Which do you think is the most humane approach:

    1) Tear it apart with bombs.
    2) Strafe it with high caliber automatic weapons
    3) Systematically blow out the tires, with a small risk of blinding.

    I'd take the small risk of blinding over being decimated by explosives any day. Of course this is just one example. There have many applications that can achieve military objectives while preventing risk of injury and death.

  14. Re:Um. by ocbwilg · · Score: 5, Insightful

    Think about it. You go in and you can drop, depending on the fighter between 6 and 24 500-pound bombs, in more or less one go, which is going to pulverize everything in the area... Or you can loiter around as a sitting duck for anti-aircraft fire and pop off two four-second laser bursts every thirty seconds.

    Think "surgical strike." A laser-guided smart bomb is fairly accurate. Most of the time the bomb lands within a few yards of the target area lit up by the laser. A laser, on the other hand, hits exactly where the laser is aimed. You don't have to worry about winds and drifting.

    You also have the advantage of a beam that travels at the speed of light, versus a bomb or a missle that may take a few seconds or minutes to hit the target. Ever seen a fighter plane dodge a missile with chaff or flares or fancy maneuvers? They can't dodge a laser.

    Then there's the advantage of stealth. With an IR laser, you don't see it coming, you don't see it when it gets there, and you don't see where it came from. All you see is the "poof" when it's done.

    How many laser-guided bombs can an F16 carry? Compare that to the number of potential shots you'd get with the laser weapon. You don't have to worry about running out of ammo. Sure there's a cool-down time of 30 seconds between shots, but you've also got the capability to neutralize four targets in the first 1:16, and two more every 38 seconds after that. Take a couple stalth planes with a laser onboard and you could do some serious damage.

    Think of the reduction in payload. Would you rather have a single (or maybe dual) laser array that weighs a couple thousand pounds or 16,000 pounds of munitions? Less weight equals more speed and more maneuverabilty, not to mention more room for other weapons or a larger fuel load to increase range.

    There's a whole stack of benfits out there.

  15. Re:Inhumane Weapons by A+nonymous+Coward · · Score: 5, Insightful

    Biological and chemical weapons are also banned, yet we issue gas masks and antidotes.

    But more to the point, all weapons and all machinery and in fact just about everything in the world has unintended side effects. Guarding against unintnded consequences of using them is not a crime, even if the thing in question is a crime. What is wrong with that?

    Zillions of actions are illegal, yet we have courts and police and jails. There are also all sorts of regulations and laws against government malfeasance, yet there are also regulations designed to punish transgressors, even to help find transgressors.

    There is zilch wrong with issuing protective goggles, any more than issuing helmets and flak jackets.

    And in case you still don't get it, these new lasers are not illegal, since their intended purpose is not illegal. Only their side effect is illegal, but only if it is the main effect, not a side effect.

    The main effect of any weapon is to kill enemry soldiers, not civilians. Yet a side effect is to kill civilians. Shall we now also ban civilian ambulances near a war zone, or make their use illegal when responding to an unintended side effect of a war weapon?