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Laser Shoots Down Artillery Shell In Flight

An anonymous reader writes "The Mobile Tactical High Energy Laser is a joint project between the US Army and the Israeli Defense Ministry, with much of the work being done by TRW. Tuesday they had a spectacular success when they shot an artillery shell out of the air."

78 of 750 comments (clear)

  1. So what happens... by Anonvmous+Coward · · Score: 5, Funny

    ... when they fire one of these at a disco ball? heh.

    1. Re:So what happens... by Apuleius · · Score: 5, Funny

      In the split second before the disco ball
      melts down to nothing, anyone in the vicinity
      would be made very, very unhappy.

    2. Re:So what happens... by daeley · · Score: 3, Funny

      So... who did I piss off?

      Disco Stu: 'Hey, Disco Stu doesn't advertise.'

      --
      I watched C-beams glitter in the dark near the Tannhauser gate.
    3. Re:So what happens... by nadador · · Score: 5, Funny

      > In the split second before the disco ball
      > melts down to nothing, anyone in the vicinity
      > would be made very, very unhappy.

      Aren't people in the vicinity of disco balls very unhappy all the time? That and people in the general vicinity of Abba tribute bands. They're unhappy, too.

      --

      Outside of a dog, a book is a man's best friend. Inside a dog, its too dark to read.
    4. Re:So what happens... by JimPooley · · Score: 3, Interesting

      A couple of years ago Israel won the Eurovision Song Contest. Their entrant was the transexual Dana International, and her victory really pissed off all the orthodox hard-core who would rather see people like that put to death.

      I thought her victory representing her country was A Good Thing, purely because it pissed off the fundies!

      The song was shit, of course, but then all Eurovision songs are.

      --

      "Information wants to be paid"
  2. More details please by A5un · · Score: 5, Interesting

    Reading through the article doesn't give much info about details such as:
    How much does one unit cost?
    How long is the "reload"/"re-aiming" time?
    Will it survive real heavy artillery battle?

    1. Re:More details please by Wyatt+Earp · · Score: 5, Informative

      If you are an Opfor arty commander and you find out your shell gets knocked out of the sky by one of these, you have about 2 minutes to call in fire before some MLRS counter-battery fire knocks your ass into next week.

      With UAVs, counter-battery radar and mobile systems like Paladin and MLRS, it's suicide for Opfor with Soviet doctrine and Soviet arty to fire on US/NATO/IDF positions.

      If you are lucky Opfor with South African guns, you can stand off from normal 105/155 NATO guns, but you are still in MLRS range.

    2. Re:More details please by Stonehand · · Score: 4, Insightful

      It'd also be useful in Afghanistan right now, where every so often somebody tries to lob a mortar round or rocket into a US camp. They don't lob a huge salvo (e.g. a Katyusha launcher might be tough to hide from the drones, satellites, manned aircraft, patrols...) but one could do some damage if they improved their accuracy or just got lucky enough. The ability to zap 'em would be nice.

      Israel... yes, they're probably expecting more Katyushas c/o Hezbollah, and all the mortars that the Palestinians technically agreed not to have, but do have anyway.

      --
      Only the dead have seen the end of war.
    3. Re:More details please by Docrates · · Score: 4, Interesting

      You seem to be ruling out the possibility of a US vs. North Korea or a US vs. China war. 10 years before Gulf War I noone was thinking about it, but the military was preparing for it nonetheless. When you have a huge war in your hands is NOT the time to star figuring out which weapons would be useful.

      --

      There are two kinds of people in the world: Those with good memory.
    4. Re:More details please by Wyatt+Earp · · Score: 5, Interesting

      It does, if it's possible to achive. Which hasn't happened for the Russians since 1945 and hasn't happened for the Chinese since the winter of 1950-51.

      It won't happen anywhere in the world, unless you are talking about battlefield missiles and China pointing them at Taiwan, which I'm not.

      No one outside of the Chinese are going to have 300 howitzers, but for shits and grins lets say they do.

      Soviet Doctrine is to line them up wheel to wheel in a phase-line that's been surveyed and to toss round after round at the Yankee pigs while T-72s and T-80s roll across in an advancing line.

      Sounds swell, but it won't work.

      In the 1970s the US Army in Europe came up with Air-Land Battle which was designed to counter this plan.

      You take some Apache and Kiowa Warriors (soon RAH-66s) and swoop in Hellfiring the crap out of the tanks, then you zap some of the supporting infantry and softer AAA and mobile SAMs with Hydra-70 rockets while the A-10s Maverick the advancing line and F-16s throw HARMs at the AAA and SAMs dumb enough to light up thier radars.

      As soon as the D-30s open up, it's go time, the M-109s counter battery fire and scoot before the first rounds impact, then without a surveyed position form up and counter battery fire more while the MLRS's throw some bomblet love in the direction of the Red Arty.

      In 10 minutes 70% of the static Soviet Doctrine guns are foil.

      Most conventional USSR units were NOT nuclear armed, tactical nuclear weapons were closely controled by the Communist Party and the Red Army.

      I'm not talking about blind-faith, Iraq was a very viable opponent on Jan 14 1991, but they made grave tactical mistakes, driven from the Soviet, Chinese and East German advisors and thier own experiance in dealing with American equipment in the Iran-Iraq War.

      Air-Land battle, with combined arms operations and movement destroyed Soviet Doctrine formations, units and hardware.

      Soviet Doctrine calls for close management from a higher headquarters, when that is cut off, the army withers and dies. Soviet Doctrine and equipment does not allow for mobile combat formations that can move quickly, the US/NATO doctrine does.

      M-1A2, M-2, AH-64, H-56, A-10, F-16, M-109, MLRS, MAV, M-60A3, M-113A3, F-117 and F-15E are all desgined/upgraded to exploit faults in Soviet Doctrine as illustrated in Korea, the Golan, Sinai, Inter-Germany observations and Iraq.

      The only nation-state that could give the US a run for the money is Communist China. Russia could at a nuclear level, but not a conventional level.

      Israel would be a tougher nut to crack than the EU.

    5. Re:More details please by Dusabre · · Score: 3, Informative

      Interesting summary of Soviet and the Nato battle plan. I would add that there was a condition to both plans being implemented, air superiority.

      Which wasn't a given considering the size and quality of the opposing forces. These air forces couldn't have been knocked out preemptively or *first* (current US doctrine seems to apply a domino strategy, first air defence, then infrastructure, then battlefield components - highly effective I have to say).

      Without air superiority, the battlefield aircraft would have had a quite *difficult* time.

      Further, until air superiority was gained, it would have been the German grunt (albeit in a Leopard or two) who would have been trying to stop the Red Army, he would have been vulnerable to artillery. And the Mi-24s. And the T-72s. And the Specnacz running around behind Nato lines.

      As far as going to war with the EU, hmm, that's a lot of (nuclear armed) territory to conquer and occupy. Unlike Isreal which you can drive through and across in an afternoon.

    6. Re:More details please by athmanb · · Score: 3, Interesting

      This is a nice theory, but you should remember Murphy's rule of combat "No battle plan ever survives contact with the enemy".

      All military commanders have nice thought out plans how they are going to wipe the enemy without a single loss to their troops, but when it comes down to reality, people start to realize that the enemy also has exactly these plans.

      Such well thought out scenarios like you paint there only happen in war games when the OpFor is playing especially nice and lets the four star general win to not endanger their military career (unlike this)

      In actual combat, you can count on being taken by surprised by some enemy action and having to reform your plans on the go or lose.

  3. Real Genius.. by Anonymous Coward · · Score: 5, Funny

    They say in the article that it was developed by the army and TRW, but we all know it was Mitch Taylor and Chris Knight.

  4. How in the world... by Anonymous Coward · · Score: 4, Funny

    Do you put a GPS and transmitter in an artillery shell?

  5. Where does the momentum go? by TimFreeman · · Score: 3, Interesting
    If you start with, say, 20 lbs of supersonic projectile, and then you zap it with a laser, you still have 20 lbs of something moving with about the same average velocity as before.

    Thus, if you want to protect the target, you either have to vaporise the entire projectile so the momentum is dispelled by the air, or maybe it's an explosive shell and the laser persuaded it to explode (which is another way of vaporising it, I suppose).

    Breaking it in two or poking a hole in it wouldn't be sufficient.

    Does anyone know exactly what they meant by the laser "destroying" the projectile?

    1. Re:Where does the momentum go? by kbonin · · Score: 3, Insightful

      They likely mean the laser heated a spot on the projectile sufficiently to initiate low order detonation of the explosives therein. This would likely break it into enough pieces to keep it well short of its original intended target...

    2. Re:Where does the momentum go? by TheSync · · Score: 4, Insightful

      Shells don't kill (many) people by ballistic momentum, they kill mostly through shrapnel.

      That said, raining shrapnel from the sky could still be dangerous, but it would land short of the original target. So just overshoot?

    3. Re:Where does the momentum go? by Gavin+Scott · · Score: 3, Insightful

      I have to assume that it was some sort of explosive warhead that was detonated by the heat of the laser.

      History clearly demonstrates that all surface-to-air weapons systems demo slightly better when you pack the target to the gills with high explosives.

      But yeah, the original momentum isn't getting "blown up", so if the thing that's shooting at you is a battleship lobbing volkswagon-sized projectiles, the fact that you warmed it up a little bit before it hit you isn't going to make much difference.

      But if the enemy is going to helpfully pack all his warheads with heat sensitive HE, then this should work great!

      G.

    4. Re:Where does the momentum go? by nadador · · Score: 5, Informative

      A cloud of shell parts has a very different aerodynamic profile. The remnants of the shell might still be initially traveling in the same direction, but the fragments will not maintain that course. You only have to change the trajectory of the shell enough to make it fall short of its target.

      --

      Outside of a dog, a book is a man's best friend. Inside a dog, its too dark to read.
    5. Re:Where does the momentum go? by Phanatic1a · · Score: 4, Informative

      Proximity fuses detonate their shells at an optimum height; the terminal velocity of an artillery fragment isn't very high, it's the fact that it's being driven into you by a bursting charge that's the dangerous part.

      If the shell detonates below this height, the resultant spread of the fragments will be limited. If it detonates above this height, then the fragments will both be spread over a wider area and lose more energy to air resistance.

      In either case, you're better off than if the shell detonates at the proper altitude.

    6. Re:Where does the momentum go? by afidel · · Score: 5, Interesting

      hehe, you just pointed out one of the biggest benifits of this type of antiprojectile system. If they work and are fast enough you can explode the ordinance over the enemies own lines. If the enemy is using nasty stuff like biological, chemical, or nuclear arms you've just doubled the effectiveness of your defense by making it an offense.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    7. Re:Where does the momentum go? by mce · · Score: 5, Interesting
      You're missing 2 points:
      • The explosive bit.
      • Even if you just succeed in breaking the shell into pieces and due to some magic it does not explode, the pieces will not end up at the original target as designed. First of all, their trajectories and speeds will diverge. Next, shells are designed to do their nasty job in very specific ways (they have care- and purposefully designed geometries, windscreens, armour piercing caps, fuze delays, ...). If these things do not arrive as intended, their effect will be greatly reduced and sometimes even nullified. Hell, even a 1 degree change in impact obliquity can make the difference between piercing an armoured plate or bouncing off (for otherwise identical and intact shells).
    8. Re:Where does the momentum go? by Mac+Degger · · Score: 3, Informative

      No, the problem was that more than 90% of those Patriot missles didn't hit their target! It was pure spin control that made them seem effective...and the spin was so good that even now so many people think the Patriot missile systems worked. Even after so many documentaries/newsreports/etc. saying they didn't. Problem is of course that those reports weren't made until the very late 90's. Of course, you're final point still does stand.

      --
      -- Waht? Tehr's a preveiw buottn?
  6. Wonder if this was a gimmee by afidel · · Score: 5, Interesting

    like the ones used to pass the first generation patriot missle system. The gen 1 patriots were so bad that final analysis showed that in one test the patriot missed the mark only to have the target slam into it, thus causing both to break up. In the official scoring this was marked as a hit and win for the patriot sytem even though it was a random fluke. Unless someone not affiliated with the military or the defense contractor verifies the results I shall remain skepticle until field use proves the system.

    --
    There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
  7. Re:Isn't this old news? by Amazing+Quantum+Man · · Score: 5, Funny

    No, that was James Bond.

    --
    Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  8. Shells easier to hit than rockets by spun · · Score: 4, Insightful

    They make it sound as if an artillary shell is a HARDER taregt to hit than a rocket. Rockets accelerate, tumble, and move erratically. Artillery shells move in well understood, computable trajectories. They probably had the damn flight path of the shell computed before they fired it. It's one thing to shoot down a shell when you know it's path ahead of time, another entirely to get a fix on an unknown, erratic rocket and destroy it.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    1. Re:Shells easier to hit than rockets by puppetman · · Score: 3, Interesting

      Really?

      I would think that a shell starts with an initial velocity, and slows down due to air resistance and gravity as it arcs upwards.

      As it begins it's decent, itmay speed up with gravity, or slow down even more, depending on the air-resistence. If it slows down, it will slow down slower (if that makes sense).

      Second, a shell goes much faster than a rocket. If the aim is off by just a little, a rocket might not have moved that much. A shell would probably be long gone.

      Third, I believe shells are smaller than rockets. Smaller target requires more accuracy.

      Ergo, a shell *IS* harder to hit than a rocket.

    2. Re:Shells easier to hit than rockets by Syncdata · · Score: 3, Interesting

      It's one thing to shoot down a shell when you know it's path ahead of time, another entirely to get a fix on an unknown, erratic rocket and destroy it.
      Actually, that depends on how you look at it. A rocket, while certainly being much harder to target and track with the laser, is still holding volatile propellent, which the artillery shell would lack. The artillery shell would also have a thicker casing then a missile. This makes me wonder the same thing as another poster, what they mean when they say the shell was "Destroyed". Still, it is interesting to see lasers coming into use in the military, for purposes other than just targeting things.

      --
      "Inattention makes clowns of us all" -Bean
    3. Re:Shells easier to hit than rockets by pclminion · · Score: 3, Interesting
      You might be right, but it's a freaking hard problem in any case.

      There's a simple formula for calculating how far you will miss by if the laser is misaligned: e = d tan t where t is the angle of misalignment and d is the distance from the laser to the target. Disclaimer: this formula is only accurate for extremely small angles, but those are the kind we're dealing with here.

      Say, for example, you're shooting at a missile that's 1500 meters away, and you are misaligned by 15 arc minutes (0.25 degrees). The laser will miss the rocket by 6.5 meters, according to the formula. That's a significant error.

      Not only do you have the difficulty of tracking the rocket to within sub-meter accuracy, you also have the problem of keeping the laser in constant alignment to extremely low tolerances, for a long enough period of time to actually destroy the target.

      This accomplishment is no laughing matter!

    4. Re:Shells easier to hit than rockets by Phanatic1a · · Score: 5, Informative

      As it begins it's decent, itmay speed up with gravity, or slow down even more, depending on the air-resistence.

      It's still going to closely approximate an ideal paraboloid, except at the terminal stage of flight where it's going to travel more vertically than ideal equations predict. In addition, the shell travels way up high, easily visible to radar, where most missiles people on the surface worry about tend to lose themselves in ground clutter, SR/IR/ICBMs aside.

      Second, a shell goes much faster than a rocket.

      No, not really, especially during the terminal stage when the shell's maximum speed is limited by terminal velocity; a shell gets one big push at the start of its flight, and is purely passive afterwards (well, excepting rocket-assist and basebleed, but still). A rocket continues to accelerate as long as the motor burns, and can reach speeds far in excess of artillery shells, which can routinely be seen with the naked eye as they hurtle downrange. The trouble here is that "rocket" spans such a wide range; a rocket can be a nice slow fat subsonic target like a Silkworm, or a Mach 2.5+ evasive-action-capable SS-N-22. HARM missiles have a top speed of 2300kph, ferinstance, a good bit faster than terminal velocity of most things that only travel ballistically.

      But in either case, shooting down a shell in flight is really nothing new. The Brits had Sea Dart back in the Falklands, and that was capable of shooting down 4.7" artillery shells. Shooting down the shell is *not* new, or exciting or innovative. Doing it with a laser is.

    5. Re:Shells easier to hit than rockets by hondo77 · · Score: 5, Insightful

      That's why they're called TESTS. This is like complaining to the Wright Brothers, "That's nice but it's not as hard as carrying 50 people across the Atlantic non-stop." It's all hard, of course, so one has to expect little steps like these.

      --
      I live ze unknown. I love ze unknown. I am ze unknown.
    6. Re:Shells easier to hit than rockets by f97tosc · · Score: 5, Insightful

      They make it sound as if an artillary shell is a HARDER taregt to hit than a rocket. Rockets accelerate, tumble, and move erratically. Artillery shells move in well understood, computable trajectories. They probably had the damn flight path of the shell computed before they fired it. It's one thing to shoot down a shell when you know it's path ahead of time, another entirely to get a fix on an unknown, erratic rocket and destroy it.

      You are right that it is easy to compute the trajectory of an artillery shell if you know the speed (and this you can measure by radar). You just solve the same equations that the artillery battery did before firing. These computations are very well understood. That being said, I disagree with the statement that (cruise) missiles are easier.

      First of all, rockets don't really "accelerate, tumble, and move erratically" that much. They can be mostly considered like an artillery shell with a constant forward force. A cruise missle may make one or two smooth turns during its flight, rocket artillery not a single one. If you are firing a laser it is a safe bet that the missile will keep on the same path for a couple of more seconds - and remeber, the laser reaches its target instantaniously so it is easy to cancel or readjust your beam.

      Now a couple of factors that makes it harder to kill the artillery shell
      -It is much faster than a (cruise) missile -It is smaller, about one third of the size -It is not particullary sensitive. The shell is basically a piece of metal shaped like a cone travelling only by momentum; the cruise missile has little wings, complex control systems and yes, it burns rocket fuel.

      I think this is quite revolutionary. I venture guess they will put these bastards on Aircraft carriers. Not a hostile shell, missile, airplane or UAV will come within miles. And there are nuclear power plants to drive them.

      Tor (served in the Swedish artillery)

  9. Yay! by Cervantes · · Score: 4, Funny

    Yipee! Won't we all be safe once the "civilized world" is protected from the barbarians? Why, the "bad people" won't even be able to shoot at usat all, let alone support the "terror-ists" with their insidious "terror-ism".

    So, lets review. 'Predator' unmanned aircraft armed with Hellfire missles for patrol and attacks, lasers to shoot down artillery (and you know bullets are coming soon), Star Wars V2 to protect us from missiles, and any country that tries to develop anything we don't like gets a "regime change".

    Yeah, I can't see why the rest of the world hates the west, can you? We turn war into a fuckin' video game, and relegate them to attacking us with swords while riding their camels.

    I know it's the natural evolution of war, but it also seems like the natural evolution of capitalism applied to the battlefield. He with the most money to make the best toys wins, and he who doesn't hopes for an aid package to be sent to his widow.

    Of course, we might get charitable in a few years and let them have some low powered lasers, but only if they attach them to the sharks... I mean, come on, is it too much to ask for some sharks with frickin lasers on their heads?

    I think it's time for some sugar... rants like this could be dangerous... nice Echelon, niiiice Echelon.

    Hm, maybe I should get a book on lasers from the librar

    NO CARRIER

    --
    If I knew the wedgies I gave you back in 6th grade would have resulted in this . . . I might have taken a moments pause.
    1. Re:Yay! by Frank+of+Earth · · Score: 3, Interesting

      So, lets review. 'Predator' unmanned aircraft armed with Hellfire missles for patrol and attacks, lasers to shoot down artillery (and you know bullets are coming soon), Star Wars V2 to protect us from missiles, and any country that tries to develop anything we don't like gets a "regime change".


      Hrm.. well we [Americans] have to get something out of our tax dollars. It sure made my day when CNN reported they were able to identify the target of the hellfire by the leg fragment they found by the blast site.

  10. Re:Isn't this old news? by SmilingMonk · · Score: 5, Informative
    The DoD has had laser guided munitions for decades. Since Vietnam, in fact.

    Lasers to knock out 'metal things' have been around for decades as well. The difficult part has been tracking very high speed objects from a distance.

    There was a big Navy project to put a laser on a ship. I have no idea if that was ever put into operation.

    There was the 'Star Wars' Alpha program that was run during the Regean military buildup. And King George the Second appears to be trying to breath life back into the project.

    What makes this news item 'interesting' is that the DoD seldom comments on successes like this unless program funding is at stake or some politico needs to be impressed.

    Regards.

  11. Re:What happens if you miss? by Amazing+Quantum+Man · · Score: 5, Funny

    Where does the laser go if they miss the shell? Disperse into a cloud? Hit a passing 747?

    Somehow, I doubt a 747 would be flying into a live fire area (Iraqi airliners excepted). Many current artillery shells have high trajectories that go several km in altitude. As a matter of fact, I once worked on a system that had an operator warning "NOTIFY NASA", for when a shell trajectory was computed to go above a certain altitude.

    --
    Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  12. One meeeelion dollars! by broken · · Score: 4, Funny



    Who? Who is predictable?

  13. Laser weapons by zephc · · Score: 3

    looks like we're getting ready to fight the Goa'uld invasion forces... ;-)

    --
    "I would say that 99 per cent of what my father has written about his own life is false." - L. Ron Hubbard Jr.
  14. The future is coming by NewtonsLaw · · Score: 3, Interesting

    Gosh, it looks as if all those old sci-fi books really were a glimpse of the future.

    Now if this prediction made in the 1969 edition of Popular Mechanics would just come true:

    "Future watches won't just be for keeping time either. Wlatham engineers forsee this exciting possibility: Wristwatches in the year 2000 will be used for more than time measurement. They will be total communication centers, containing devices not only for accurate timing but also for voice and vision communication; and simple recording -- they'll even contain simple miniaturized computers"

    Wow -- imagine that, a miniaturized computer in your wristwatch -- nah, it could never happen!

    But a Dick-Tracy wristwatch communicator, yeah, that'll work :-)

  15. Mirror coating? by Quixote · · Score: 4, Interesting

    What if the shell had a very glossy finish (like a mirror or something). Would the laser still have the same impact (no pun intended)? I'm just curious.

    1. Re:Mirror coating? by !splut · · Score: 4, Informative

      Take a look at this thread from a recent article on laser weapons.

      --
      The angel in the oatmeal.
    2. Re:Mirror coating? by tswinzig · · Score: 5, Informative

      ARGHHHHHH. This question gets asked every time a new "laser shoots something that flies out of the air" story appears on slashdot. (Strangely enough these stories are quite regular.)

      The answer I've seen most often is that even the best mirrors don't reflect 100% light, and any laser light that gets "through" will quickly degrade the mirror from the inside out, allowing even more light through.

      But for even more info... try a slashdot search for laser stories, and then search the comments for the word "mirror."

      --

      "And like that ... he's gone."
  16. Re:Isn't this old news? by NanoGator · · Score: 5, Funny

    "Didn't they have this back in the 60's? correct me if I'm wrong, I was always told this. "

    Well, the technnology was developed recently, but yeah it did exist in the 60's. I think it was called the Alan Parsens Project.

    --
    "Derp de derp."
  17. Re:Isn't this old news? by daeley · · Score: 3, Funny

    Scott: "I mean why don't you just call it Operation Wang Chung? Ass!"
    Evil: "Well what, what should we?"
    Scott: "Nothing, I'm sure Operation Bananarama will be huge!"
    Evil: "What are you saying?"
    Scott: "If you..."
    Evil: "..Shh!"
    Scott: "..trying to be hip."
    Evil: "double-u, double-u SHH dot com. Dot org."
    Scott: "You suck!"
    Evil: "SHH!"

    --
    I watched C-beams glitter in the dark near the Tannhauser gate.
  18. Throw me a frickin' bone, people by Junior+J.+Junior+III · · Score: 5, Funny

    All I asked for is that the word "la-ser" be printed with quote marks around it, is that so hard?

    --
    You see? You see? Your stupid minds! Stupid! Stupid!
  19. Targeting is the problem by Brother52 · · Score: 3, Insightful
    ...the laser tracked, locked onto and fired...

    I wonder how the laser could do this. This is indeed the most technicaly challenging part of the task. I visit military exhibitions regularly but I never heard of a system that could work against targets of that size (projectile). Even tracking rockets is very difficult and they're way bigger and emit a lot of detectable heat.

    My guess is that in their setup the targeting system knew from where exactly the gun fired. In a real-life war this is usually not the case. So until the tracking is reliable (and not easily fooled), this sounds entirely vaporware.

    1. Re:Targeting is the problem by mesocyclone · · Score: 3, Insightful

      The military has been tracking projectiles for a long time. They had mortar tracking radar during the Vietnam War that could track the shell, predict its impact point, and more importantly, back calculate the launch point.

      Tracking a shell can be very easy, depending on the circumstances. They are made out of conductive metal, so a radar can certainly track them.

      You detect the firing with a rapid scan radar, then lock onto it with a finer resolution radar. Then you use lidar (Laser radar) for final tracking and range finding.

      This really is not much of a trick.

      What is impressive is integrating all of that technology with a laser that is powerful enough to damage the projectile while at the same time being able to track it.

      Vaporware. Hardly - this system is already being used in Israel and to shoot down Katyusha rockets. In this sort of issue, the main difference between an artiller shell and a rocket is that the rocket is likely to be longer. But an artillery rocket doesn't burn for long, and then it is just another ballistic projectile.

      --

      The only good weather is bad weather.

  20. Nasty chemicals by shadowj · · Score: 4, Informative
    The article mentions that it's a "deuterium flouride" chemical laser. I wasn't surprised that flourine is involved, but why deuterium? Why wouldn't hydrogen do? Deuterium's chemical properties are the same as those of plain old H, I though.

    It took a little poking around, but I found an explanation of how this thing works... looks like deuterium gets them a longer wavelength that travels through the atmosphere better.

    Whatever the reasons are, I wouldn't want to be anywhere near that thing while it's fueled. Raw flourine is incredibly nasty stuff, and the hydrogen flouride exhaust is really awful, too... it dissolves in water to form hydrofluoric acid, which is reactive enough to eat glass (you have to keep it in teflon bottles). I hope they're not discharging it into the atmosphere!

    --

    --Larry

    Never attribute to malice that which is adequately explained by incompetence

  21. Laser=coherent by ccmay · · Score: 3, Insightful
    If I were the ARTY commander, and I figured out I was fighting one of these things, I'd call in multiple volleys from different Fire Units to wipe it out -- it can't be omnidirectional! Unless the target acquisition time is insanely low...

    Remember, this is a coherent beam of laser photons. Lasers lose little of their energy and gain only slightly in cross-sectional area with increasing distance. It is likely that any deployed system will have a range vastly greater than artillery. These things can be miles behind the front or even in the air. Plus, the accuracy is such that we will soon be able to vaporize selected individuals in a crowd.

    Before long we will have the ability to render even sophisticated armies totally obsolete. I think this is a good thing. We'll turn opposing officers and armor into cinders in the first fifteen minutes of any engagement, sparing not only civilian bystanders but the great majority of the troops.

    Thirty years from now, the greatest challenge to our armed forces will be how to deal with the POWs. No power on Earth will be able to oppose us when we decide to bend other nations to our will.

    You may like this situation (I certainly do) or not, but be prepared to face the reality. Our obligation to the rest of the world, as American citizens, is to work to keep our Constitutional checks and balances in place so that our mighty power is used for worthy ends.

    -ccm

    --
    Too much Law; not enough Order.
    1. Re:Laser=coherent by jericho4.0 · · Score: 4, Insightful
      I don't like this situation. I'm not American, and after seeing the results of the last election, I have serious doubts about Americas system of checks and balances.

      I recognize Americas (as much as any nations) right to arm itself as well as it can. But I don't see overwhelming strength, used at will against other nations, as a long term path to world peace.

      America, and Americans, have a responsibilty to the world. The world can use a cop. But we've all seen bad cops.

      --
      "A language that doesn't affect the way you think about programming, is not worth knowing" - Alan Perlis
    2. Re:Laser=coherent by GMontag451 · · Score: 4, Insightful
      It is likely that any deployed system will have a range vastly greater than artillery. These things can be miles behind the front or even in the air.

      Just because the laser has essentially a limitless range doesn't mean the targeting systems do. Remember, the precision needed for hitting a specified target increases as the square of the distance between the laser and the target does. The curvature of the earth also presents difficulties when targets are at far distances. For every mile the target is away, the laser must be 25 feet higher in the air than the object targetted. This essentially precludes ground based long range attacks. The mounting of the laser on an aircraft presents even more difficulties in getting accuracy and precision out of the targeting system due to the movement of the aircraft.

    3. Re:Laser=coherent by Mac+Degger · · Score: 3, Insightful

      You mod the parent Flamebait? When the parent of the parent post talks about US ruling the world, he gets +5 insightfull.
      When the parent to this post says "Well, be carefull with your checks and balances" using an all too apt analogy using good/bad cops (all too apt seeing the corruption in business and politics around the world) he gets flamebait? Wow.

      --
      -- Waht? Tehr's a preveiw buottn?
    4. Re:Laser=coherent by Genady · · Score: 3, Informative

      Before long we will have the ability to render even sophisticated armies totally obsolete. I think this is a good thing.

      Hmmmmm, now this may be slightly off-topic but....

      Here's what makes me doubt your comment. We are getting very close on some of this cool-high tech stuff. But there's one weapon system in particular that gives me pause. HERF. High-Energy Radio Frequency. The military refers to it as High Power Microwaves. Imagine a steerable localized EMP. This is what HPM is. Have some electronics that aren't protected by a Faraday Cage that depend on transistors or microprocessors and these weapons will fry the systems.

      That's all nice and good, if it's the good guys that possess the technology, but what if the bad guys get ahold of it. The United States Military has become the HERF Gunner's dream target. Can you imagine a HERF weapon system combined with a phased array radar? Hell the systems could be one-in-the-same with enough design. Now Saddam's AAA just watches for Aircraft coming by and zaps their computers. An F-117 won't fly without it's computer. Even if the planes manage to get their JDAM's off before they turn in jumbo sized lawn darts you just zap the guidance package on the bomb and your $100k precision guided munition just became a dumb bomb again.

      I mean really HERF/HPM is something to worry about. What's to stop AlQuida from aquireing the technology and camping out on the approach lanes to JFK or National? I mean if the Airlines complain about walk-mans and laptops interfering with aproach and landing signals how are they going to do when the bad guys start zapping airliners with directional EMP?

      --


      What if it is just turtles all the way down?
    5. Re:Laser=coherent by istartedi · · Score: 3, Funny

      Thirty years from now, the greatest challenge to our armed forces will be how to deal with the POWs. No power on Earth will be able to oppose us when we decide to bend other nations to our will.

      Unless they have box-cutters.

      --
      For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
    6. Re:Laser=coherent by DarkEdgeX · · Score: 3, Insightful
      I don't like this situation. I'm not American, and after seeing the results of the last election, I have serious doubts about Americas system of checks and balances.
      The last election was fine, George W. Bush won the electoral vote and the Presidency. Florida was a tight race, but you can't sit there and recount ballots from now till eternity-- the whole situation went on for over a month as it was, and the courts decided that enough hoop jumping had been performed.

      I'm not going to pretend that the US is perfect, it's not, but no country is. =) The US's checks and balances system is working fine, don't let a single election sway your opinion of our political system. ;)
      --
      All I know about Bush is I had a good job when Clinton was president.
    7. Re:Laser=coherent by dzym · · Score: 3, Insightful

      Two Words:

      Native Americans.

      Sure, we're apologetic now, but the damage's done. Similarly slavery--although we fought a rather large internecine war partly over the issue.

  22. Not nuclear by Galvatron · · Score: 3, Informative

    Nuclear devices cannot be detonated by random shots. They require very precise triggers. The most you'd get would be radioactive shrapnel from the destroyed bomb.

    --
    "The question of whether a computer can think is no more interesting than that of whether a submarine can swim" -EWD
  23. artillery expert by cr@ckwhore · · Score: 5, Informative

    As an ex army cannoneer, I'd like to know more about the artillery shell that was destroyed by the laser.

    Here's what I can tell you ...

    I worked on the m198 Howitzer, which can fire a 100 pound 155mm HE (high explosive) shell at a muzzle velocity of around 750m/s. With other combinations of propellants and rounds, the velocity could easily reach 1 kilometer per second or greater. Not too shabby for a 100+ pound piece of steel going down range into a target the size of a 5 gallon bucket.

    The inherent problem with an artillery shell is that its trajectory is highly predictable... its all about math. So, for the purposes of a high powered laser, as long as it can perform some really nifty calculations in a split second, and point itself right into the path of a traveling artillery shell, then the shell will actually fly into the laser if everything goes according to plan.

    Artillery shells can also be detected with radar ... we used radar at night to track where our shells were landing.

    So, whats next... assuming that the laser works by calculating the trajectory of the shell, and positions itself ahead of the shell, would the next advancement in artillery be shells that wobble to avoid running into a high powered laser?

    Besides these basic artillery shells, there are also laser guided and rocket assisted shells, whos trajectories may be a bit harder to calculate.

    Here are just some of the factors that go into calculating the trajectory of an artillery shell...

    1. The exact weight of the shell.
    2. The type, amount, and temperature of the propellent.
    3. Resistence of travel (air friction) based on weather conditions and altitude.
    4. Curvature of the earth and gravity.

    So there you have it folks... this laser is an amazing piece of technology.

    --
    Skiers and Riders -- http://www.snowjournal.com
  24. Great! by Rogerborg · · Score: 4, Interesting

    Now, all we need to do is to find an enemy to use it against.

    If we don't know where the shells are coming from, what's the chances that this system will be able to realistically identify a genuine incoming round, activate (from idle) and reliably shoot it down in time? We're not getting the first couple of rounds, and after that, our existing counterbattery systems will be silencing the enemy artillery.

    If we do know where they're coming from (and we damn well should, given what we spend on reccetech), then why aren't we pasting them with our existing overwhelming air superiority and artillery?

    So what's the theatre? Where are these systems going to be deployed?

    One in the White House, one in the Pentagon... where else? Whatever we build on the WTC site? But do we reckon that any grunts are going to get the benefit of it? Hmmm.

    It's neato technology, but it seems like a solution to a problem that the US has spent trillions to ensure that it doesn't have any more.

    --
    If you were blocking sigs, you wouldn't have to read this.
    1. Re:Great! by neema · · Score: 3, Insightful

      Given the fact that the Israeli Defense Ministry has been aiding the US with this, I'm going to go ahead and assume that they'll definately be having systems such as this.

  25. a real world application? by Sarin · · Score: 3, Informative

    ofcourse they knew exactly which flightpath the shell was going to follow and where it was going to be at what time beforehand. So taking it down wasn't really that hard.

    They probably shot some shells before and got the flightpath recorded into a computer. Then they shot the "test" shell during compareable weatherconditions and perhaps they even did some minor adjustments, it doesn't really matter, they knew the trajectory beforehand, so when they shot the "test" shell the laser knew exactly at which point to fire at which coordinates.

    This isn't how things go in the real world, so I wonder how much of an defense contractor technology bragging hype this is and whose interests are behind this (it's not difficult to make a guess here).

  26. Read the test plan... by malakai · · Score: 5, Informative

    This wasn't rigged. Everyone was told ahead of time that the target missle had a GPS receiver on the warhead as well as a C-band beacon.

    The purpose of the test was not in acquisition and tracking, but in the kill vehicle technology (plot a path to a moving point, get within infrared range, correct course, and detonate). Sounds simple, but it gets a bit trickey a closing speeds of ~10km/s.

    The x-band satellites just weren't operational over the pacific when these tests were being done. So, when Colo springs control asked Hawaii where the missle was, it responded with information from the GPS receiver but provided artifically 'degraded' data stream. This was underlined and not hidden in the test plan (released before the test). It was done as a 'simulation' of x-band (national missle defense system) data.

    Honestly, peoples hostility to this program in current time has me baffled.

    The reson pundits of ABM tech would underscore every little failure, or break out conspiracies and wave around "rigged" results, was that we should not be researching ABM technology. Russia's on board now, you can stop pissing your pants worrying were going to invoke a nuclear war by having this technology.

    If you hate being lied to, you should take the time to better research what people (including myself) and news sources in general tell you.

    -malakai

    1. Re:Read the test plan... by ProfessorPuke · · Score: 5, Insightful

      This wasn't rigged. Everyone was told ahead of time that the target missle had a GPS receiver on the warhead as well as a C-band beacon.

      Just because the unfairness was pre-published doesn't mean the test had scientific validity.

      The purpose of the test was not in acquisition and tracking, but in the kill vehicle technology

      That's plenty difficult, but easy compared to the target identification problem. A chain is as strong as its weakest link. There's still no plan for how the acquistion can work and not be defeated by simplistic countermeasures. Without that, the high speed missile impacts are worthless.

      (Ok, not quite worthless- there is one EASY way to solve the detection problem: give up on kinetic kill, and just load the anti-missile missile with an atomic warhead. You don't need to worry about which fragment contains the enemy bomb if you can just liquify everything in a 10km radius. For some reason, the Pentagon hasn't wanted to take this plan to the American public...)

      Honestly, peoples hostility to this program in current time has me baffled.

      What's so odd about an fighting an expensive program that'll never work?

      Regardless of if the TBM can work mechanically (kinetic kill) and tactically (satellite detection of launch), there's no way it will work strategically.

      Scenario 0: Terrorists. A small, well funded group acquires an atomic warhead. Either they're supplied by an "axis of evil" state, or they loot one from a under-defended Russian bunker. Now they've got 600 lbs of pure destructive power- why bother attaching it to a missile, which is expensive, risky, error-prone, and open to detection- when they can simply carry it into their target city with an SUV / powerboat / Cessna? If they did launch a nuclear ICBM, a pair of Tridents would glaze the entire originating nation before the first mushroom cloud has faded.

      Scenario 1: Nation. A large country developes nukes and strikes the US. For each warhead, they fly out 3 dummy missles and maybe mix in some MIRV technology as well. The dummies can be cheap, they don't even need real guidance. Remember, atomic weapons are NOT kinetic-kill. You can (conventionally) explode the rocket in midflight, or otherwise jink and be evasive, without reducing your destructive power. (Accuracy doesn't matter with a 50 megaton bomb). As long as the first bomb is detonated anywhere with line-of-sight to US defensive sensors/satellites, it will disrupt enough radar to make cover for the rest.

      Any nation big enough to build & fire a few ICBMs is also big enough to make enough dummies to swamp any TBM defense system. (Our existing atomic warheads provide a strong deterrent protection, of course)

      Scenario 2: A lone madman. Some lunatic gets hold of a Russian missile silo, and on the spur of the moment fires a warhead at NYC.

      This is the only place where the TBM plan could concievably help, and its so unlikely compared to the other scenarios that its hard to argue that TBM is cost effective. (Unless you think the expenditure would help the economy, which is actually likely). But much better would be to solve scenario 0 & 2 at the same time, by reducing nuclear proliferation worldwide. I won't get into the steps to do that- there's two well-documented approaches, neither one attractive to the American mood.

    2. Re:Read the test plan... by ProfessorPuke · · Score: 3, Interesting

      It'll be a long time before the R&D cost of the defensive missile is absorbed, so they'll be much more costly for a long time. In the long run the price goes down, but its still a precision instrument (with serious maintenance and C4I infrastructure needs) in comparison to a dummy ICBM which only needs to hit the right continent. And labor is cheaper in some of these hostile-states.

      Each defensive rocket will have at best Probabilty-Kill 90%, so you'll want to use more than one per incoming agressor. If the attacker is a manuverable cruise missle and not just ballistic, you'll want more. (Submarine-launched cruise missles are really a whole different problem than ICBM interception. And a harder one). Or if there's a MIRV, then that's another multiplier on the target count.

      The cost advantage of the defense missiles is that they have less distance to travel, and need less metal and fuel. I can't say for sure how much that'll reduce the overall cost, though. And you'll want protectors to engage at the longest range you can (so that if one fails, you have time to fire more). The price war is no slam dunk.

      Remember the Missile Commmand game? It wasn't much fun, you could never win...

      More likely than wanting to really be able to neutralize an aresnal the size of Russia's, we'd just want 50 missiles on each coast that could go forth in groups of 5 against "rogue madman" warheads.

    3. Re:Read the test plan... by DaveAtFraud · · Score: 5, Insightful

      Ah yes, and the Wright brothers failed because their flyer wasn't a 747 or a Concorde.

      Get real. You develop a complicated system a piece at a time and you test the pieces as you develop them. You bring several pieces together in a "technology demonstrator" and then, maybe, just maybe, you move on to a prototype and only if that works do you develop a fieldable system. You are using the criteria for a multiple fieldable systems to criticize the demonstration of a component and, on top of that, you are criticizing said system because it may not be able to do something its not intended to do. Shheeeessh. I suppose you also don't like seatbelts in your car because they won't save your sorry behind if someone fires an anti-tank missle at you.

      I haven't heard a single missle defense person claim we're safe now. We're just a little further down the road to maybe developing a system that might be able to keep us safe from a specific threat.

      --
      They that can give up essential liberty to obtain a little temporary safety deserve neither safety nor liberty.
      Ben
  27. Re:Changing the Face of the Battlefield by Stonehand · · Score: 5, Insightful

    Nope. This isn't _Star Trek_...

    (1) To feed people, first you need to wipe out the bastards using food as a weapon -- a real problem in many conflict zones. Mogadishu, anyone? Recall what happened when the lightly-armed UN handed out food? It got seized by the militias. In other places, it'd be the government that'd confiscate the food.

    (2) Your peace is not their peace. Radical Islamists want the world to be Moslem. Some others would prefer there to be NO Moslems. Some prefer equality of opportunity, while others prefer equality of poverty. Some want a modern world, while others will only be happy with a Year Zero Khmer Rouge-style approach. You can't make them all happy, simultaneously.

    At any given point in history, probably a large portion of the human population is Thoroughly Pissed Off. Are you going to tell them to just completely change their value systems and surrender?

    --
    Only the dead have seen the end of war.
  28. Re:Changing the Face of the Battlefield by Jason+Earl · · Score: 3, Insightful

    As someone that has lived in several third world countries, I can tell you that the problems in the third world do not stem from lack of money, but rather from rampant corruption.

    When someone in Africa starves, it is only because some tinpot dictator wants them to starve, for whatever reason. And when some child in Bolivia gets sick from drinking contaminated water it is only because some politico has embezzled the funds that should have gone to improving the water supply.

    The sad part about the debts to most developing nations is that most of the monies were squandered or diverted into private accounts. However, in most cases forgiving those debts would just allow the current leaders to do the same thing all over again. The sad bit is that cleaning up corrupt governments is much harder than building water purification plants. Even the most advanced nations have fairly serious problems with corruption. Besides, no matter how much we gave other countries they would always suspect that we were holding out.

    Historically speaking the power to do massive destruction has been a far greater deterrent than paying tribute. That's just the way things are.

  29. Re:USA wins! All your countries are belong to us! by Stonehand · · Score: 3, Insightful

    Technology isn't everything. Hell, technology plus military leadership plus strategy plus tactics plus logistics isn't everything.

    There's politics. An enemy does not have to defeat the entire power of the United States; it only needs to plausibly threaten enough damage to make the US reconsider its commitment, and balance the value of objectives versus projected losses. North Korea, for instance, might question whether we'd either (a) offer them a hefty no-questions-asked aid package, or (b) accept the destruction of a major American city on the west coast. The Iraqi ambassador might suggest to the US ambassador that, should the US attack, the first Iraqi action would be launching its entire chemical arsenal at Jerusalem, and query as to whether or not the ensuing chaos would be helpful to the US. And so forth.

    Protecting South Vietnam's dictatorship was not worth it, politically...

    Oh, and the US does and will continue to cause collateral damage -- we killed quite a few innocent bystanders in Afghanistan, for instance. Some were due to misidentification, some due to misses, some due to accepting bad intelligence. And, should there be war in Iraq, there will probably be deliberate "collateral" damage in the sense that it may be necessary to directly or indirectly damage civillian infrastructure e.g. power grids, water supplies, that sort of thing.

    --
    Only the dead have seen the end of war.
  30. A little bit too much artist license by lkaos · · Score: 4, Funny

    I'm suprised no one else caught this. The initial description of "concentrated light energy photons" made me a little wary, but then I noticed:

    "the laser tracked, locked onto and fired a burst of concentrated light energy photons at the speeding shell... Seconds later, at a point well short of its intended destination, the projectile was destroyed"

    I dunno what kind of crazy trajectory that laser had, but at 300km a second, this thing must have been pretty darn far away...

    One would think that "instantly, the projectile was destroyed" would sound even better--and more importantly, have been accurate.

    --
    int func(int a);
    func((b += 3, b));
  31. Re:Israel? by superyooser · · Score: 3, Insightful
    maybe you haven't heard about Israel firing a rocket into an apartment building full of children, or bulldozing away people's homes?

    It's a different world over there. The children are terrorists. It's a shame the Israelis didn't finish the job.

    Or forcing people out of there own land because of their religion?

    Excuse me, what Muslim countries is Israel attacking? Saudi Arabia, Egypt, Yemen, Sudan, Iraq, Iran, Quatar, Oman, United Arab Emirates, Morocco, Chad, Libya, Lebanon, Jordan, Indonesia, the Phillipines? Hmmm, there must be some other factor (Google News: 13 hours ago) that you're missing. Israel's not attacking any Muslim country. Just some Arab-Israeli ("Palestinian") misfits wanting an overthrow of Israel.

    In other news, there was another suicide bombing this afternoon on the West Bank in the settlement of Tampa. "When I arrived I saw body parts lying on the road," said a woman who witnessed the blast. "I went into the shop and saw some remains covered in blood and nearby a severed leg which belonged to another body." The street was crowded with schoolchildren and shoppers on their way home from work.

    The Spanish Authority has condemned the bombing. The Español Inquisition-Jihad is claiming responsibility for this attack, which is in protest of the illegal American settlements on the occupied territory owned by the Spaniards. Gov. Jeb Bush was unavailable for comment as he was attending a funeral of a victim of last week's suicide bomber.

  32. Begging to violate the Geneva Convention by ProfessorPuke · · Score: 4, Interesting

    Most nations have signed the Geneva Convention to regulate the conduct of war- amoung other things, this means that you can only attack people with weapons meant to kill them, but not infect, poison, or maim.

    (A gentleman's agreement between the respective military-industrial-complexes, really. Dead soldier -> proud military funeral -> enhanced militarism and anticipation of future retaliation. Wounded soldier -> disabled veteran begging on sidewalk -> budget pressure for providing care, and public squeamishness about enrolling in future conflicts. Too much peace hurts our economic growth!)

    This means no chemical weapons (tell that to Russia!), no hollowpoint or fragmentary bullets, few shotguns, and no lasers aimed at people. Because the easiest ways to hurt someone with a laser is to burn his eyes out, this is consistent with Geneva.

    But, today's new, powerful anti-munition lasers will be an attractive option in the anti-aircraft role as well. Military planners must be thinking of this, but they don't want to talk about it for fear of striking taboo/war-crimes territory.

    But I wonder what'll happen if a laser-defense battery suddenly finds themselves face to face with an enemy Hind who snuck up terrain-masked. Will they run for it and hope he's a slow shot, or light it up and watch the fireworks?

    And, if the the ABL gets built and we get another hijacker repurposing an airliner into a weapon, the president will be hard pressed not to order him zapped, too.

    (Of course, another reason planners might not talk much about targeting aircraft with lasers is that the US and Israel have no potential opponents whose aircraft can't be simply destroyed with Beyond-Visual-Range missiles. Won't stop me from speculating.)

  33. The asymmetry of busted logic. by Mulletproof · · Score: 4, Insightful

    "Solution, low altitude cheap drone cruise missiles..."

    You can't get any cheaper than an artillery shell. That's why they are used so widely all over the world. The eqipment is far more rugged and battle tested than any drone to be fielded. Pipe dreams of rapid deployable cruise missile-like weapons are nice, but right now, they're pipe dreams for all but the largest of nations. And even those nations are going to stick with artillery. For the simple fact that it's simple to use and can be rapidly deployed. Maybe someday somebody will come up with the RPG of missile drones (simple to use, advanced AI with decent target recognition on the cheap for use in the rugged third world? Don't hold your breath), but you'll never be able to put more cheap drones into the air faster than I can saturate the area with artillery. Your point about decoys is probably the simplest, best bet, but I'm assuming target discrimination will improve as well. It's the same old game of move, counter-move over an over.

    Blackmail. Make the cost of using the lasers too high. An example, they use overt lasers, you use covert biologicals in their civilian sectors. They use space, you contaminate their water in a major city. They use B-2's, you use a dozen or a hundred guys with bic lighters one night. They steal your natural resources when you are a small weak country, you ally with a strong non allied country and promise them 1/2 your resources for help. They do economic sanctions, you make their economic infrastructure non functional, the "backhoe whoops" syndrome, or code red part deux.

    Just because you may be able to accomplish your objective by other means doesn't render a specific technology/strategy and/or weapons platform automatically irrelevant as you seem to be implying. In fact, it's the same argument you hear opposing ballistic missile shields. "Well hot damn. They may protect us from ICBMs, but they can still sneak a nuke in across the boarders, therefore a missile shield is completely useless!"

    I've always found that particular leap of logic astounding, personally. I can wage war by other means, therefore, that particular defense is useless. No, wrong, BS. Every one of your counter arguments are great, until you add the statement, "but so can your enemy." Fighting the unlimited dirty war you propose against a well armed, well financed opponent will earn you a massive ration of shit in a hurry, no matter who the opponent is. Sure. Nerve gas a city. You just signalled your willing to fight a no holds barred campaign. Your well financed opponent will likely get a lot nastier rather than pliable as you seem to hope. Contaminate Frances major water supplies. It'll hurt them, sure, but mark my words they will get a handle on the situation on come gunning for whatever weak-assed organization that launched the attack. Yes, even France.

    On a side note, check out David Drake and his Hammer's Slammers series. He fleshes out anti-artillery and guide artillery systems quite well in his works.

    --
    You need a FREE iPod Nano
  34. what it means to destroy an incoming projectile by v1 · · Score: 5, Informative

    There was some confusion as to what value there was in shooting a hole in an artillery shell.

    If you hit a rocket with a laser, your best shot would disable its guidance and control systems. This would quite possibly shut down its engine, but would certainly prevent it from hitting you at all. Secondary targets on a misile include control surfaces, engine, and fuel, all of which have the potential to destroy the misile before it reaches you.

    Now if you are applying these countermeasures on a misile that is already very near you, another factor comes into play... what kind of a hit it is. If you're on an aircraft carrier and someone shoots an antiship misile at you from reasonably close range, and it's of a Russian design, it's going to fly up at 45deg, and then sharp down at 45 degrees at you, very fast. If you manage to detonate the propellant or disable the rocket, there's still a good chance it will hit you and deliver its full damage. (a "hard" hit) If you get luckier and detonate its payload, or destroy the control and detonation systems, you are still going to get hit, but this is a "soft" hit. The misile body, rocket motor, and all the other bits (in one piece or many) will still do appreciable damage, but at least it's not likely to sink the boat.

    Shells are different. Major shells are going to have armor piercing or high explosive payloads, and C4 just doesn't blow up if you vaporize it with a laser... it burns. So you are not all that likely to detonate it. Shells are fired with great precision, and if all factors are known, they will land with that same precision. Your best hit on a shell is to damage it physically, and change its aerodynamic characteristics. Take a shell and scar the nose with a pocket knife, and it's totalled... you won't hit anything with it, it's not going to fly straight anymore. The laser just has to damage the casing. It's worth noting that if you punch a hole in it fast enough and start burning up the C4 inside, you might just plain burst the shell by simple gas expansion. In any event, it's effectively dealt with. It may still land and blow up, but it's not going to hit what it was aimed at.

    Even changing the orientation of the misile/shell is very useful in countermeasures. Most of these have "shaped charges", where the explosive payload is directed in a very carefully engineered way to do maximum damage. When hitting a tank with an antitank round, having the "business end" hit the tank is the difference between destroying the tank (piercing the armor and sending chaff all around the cabin to kill the crew) or doing negligible damage by exploding harmlessly outside the tank. Misiles are essentially the same... a misile that would normally destroy a target may not even detonate if it's tumbling when it hits and contacts sideways, and if the target is even lightly armored, damage will be minimal rather than fatal.

    I expect lasers to prove very effective as a projectile countermeasure.

    I did have one curiosity about the shell test they did... does anyone know how long they "beamed" the shell before it was effectively dealt with? That's one thing that must be considered... if you have to hold the beam on the target for a considerable length of time, it may be much more difficult to get in a fatal shot. Misiles tend not to roll, so if you are shooting at it from the side, (i.e.you're not the target) you still can hit one spot continuously. Shells on the other hand, are usually designed to spin as they fly downrange, and so targetting the side is actually targetting a band around the shell.

    --
    I work for the Department of Redundancy Department.
  35. You'll be blinded for a millisecond... by bziman · · Score: 3, Insightful
    Right before your head turns to ash.

    It seems to me that a laser that can pump enough energy into a rocket or a shell to destroy it is going to pump enough energy into your face to melt it off. I really don't think being blinded is much of a concern. That's like saying, "watch where you point that shotgun! You could put someone's eye out!" Sure, their eyes come out the back of their head. They ain't blind... they dead.

  36. Define "aimed" by Mulletproof · · Score: 3, Insightful

    "...and no lasers aimed at people"

    Except that this system will be used principly for shooting down shells, not people. It'll most likely be aimed up, 24/7 to do it's job. If a Hind should wander into it's attack radius, maybe it'll lock on, maybe it won't, but I serverly doubt it will specifically target the people inside, just the big radar blob that represents the helo. Tough shit for them. If you could ban it on that point, well hell, lets ban all surface to air weapondry while we're at it.

    As far as the ABL against terrorsists, sure, why not. That's why the white house has SAM sites and marines equipped with Stingers. Again, the effect is the same.

    --
    You need a FREE iPod Nano
  37. Yes, the guidance systems today are _that_ good by sgtrock · · Score: 5, Informative

    Anyone who has served on board ship in the US Navy since 1980 knows just how good our targeting systems can be. Ever heard of the acronym CIWS? It stands for Close In Weapons System. It was designed to take out inbound projectiles such as cruise missiles between 10 km and 1 km from the ship. It is still actively deployed on many US ships.

    The system consists of a tracking radar system with enough computing power to track up to 150 threats at once. It prioritizes the targeting system based upon inbound speed, size of the object, IFF status, and distance from the ship. Once this sucker is enabled, you'd better hope your planes have their IFF turned on, or they'll be shot down quicker than you can blink.

    The system did all this using a Vulcan cannon, which is a gatling gun design throwing depleted uranium rounds downrange. The system was designed to fire and correct inflight to hose down a target until it dropped out of the sky. The system's biggest weakness was the fact that it went through rounds so fast (up to 6,000 rpm theoretical, 2,000 rpm typical) that the magazines had to be HUGE. I once saw a picture of the USS New Jersey after its refit. The 4 magazines on board held enough rounds to fire for a grand total of 15 minutes without stopping. The smaller ships that had the system frequently were limited to less than 2 minutes. A decent laser system's power plant occupying the same space would solve this problem.

    This system was successfully demonstrated almost 25 years ago. Its first active deployment was in 1980 or 1981. And you "experts" are trying to tell me that the targeting technology hasn't improved enough since to take down an artillery shell? Oh, please. Go do some very basic research on what's in use TODAY before hollering about weapons tests for stuff that might be deployed tomorrow.

    The only question in my mind is the size of the power plant necessary to drive a powerful enough laser to be useful. Can it be mounted on anything smaller than a ship? Anyone know?

  38. Re:You are so wwrong!@F by Amazing+Quantum+Man · · Score: 3, Funny

    In our atmosphere, light travels at approximately the speed of sound.

    <SARCASM>
    Yeah, that's why pilots of supersonic jets don't bother with radio, because they fly faster than the radio signals.
    </SARCASM>

    --
    Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  39. Office of Homeland Security + USA-PATRIOT by 0x0d0a · · Score: 3, Insightful

    I'm not American, and after seeing the results of the last election, I have serious doubts about Americas system of checks and balances

    I *am* American, and I have serious doubts about America's system of checks and balances.

    The really frusterating thing is that the executive branch (and specficially the President) has consistently taken power away from the legislative branch for two hundred years. The recent introduction of the massively powerful and almost unrestricted Office of Homeland Security and USA-PATRIOT is uncomfortably close to the point where it would be easy to pull a transition to a dictatorial-like government, a la the Nazis. The way the Nazis worked:

    * Economy was slumping, people were worried and looking to anyone with a solution (not there yet...our "recession" is actually pretty minor).
    * Physical intimidation of opposition politicians (again, not there yet).
    * National security issues (the Reichstag Fire) that was "dealt with" (immediately taken advantage of) by suspending many civil rights and granting unprescedented power to the government. USA-PATRIOT isn't as strong as this -- it isn't full martial law -- but most people are willingly allowing the elimination of many once-strongly held civil rights to "stop terrorism". Search and seizure, free speech...
    * The establishment of powerful organizations like the SA and the SS that operated with few restrictions. This is where the Office of Homeland Security comes in -- it has more funding than even the FBI. It has zero of the restrictions that were placed on the FBI (like inability to pull things overseas, spy on overseas nations, etc), none of the restrictions on the CIA (can't spy on domestic citizens), has many of the powers of the INS. It's quite similar in name to the KGB, and essentially forms a "domestic monitoring and early response" organization. The integrity of something like that is very fragile, and could be used to pull off too many unpleasant things. It is not subject to an amount of oversight anywhere near proportional to its powers. It is, in essence, a "secret police".

    Other interesting bits was government-induced imperialism and expansion (not necessarily supported by everyone involved). As we wipe out Afghanistan's government and set up our own puppet government, and start actively threatening more governments than we had for a long, long time (Iraq. North Korea. Indonesia.), we're trying to exert a significantly increased control over other countries (though not occupy them).

    Also, America would make an awful world cop. America does what's in her own interests, which is at least somewhat her responsibility to her people. However, America (unlike most other countries) has been *firmly* opposed to a world court or global police system, because it would be a challenge to her own power.

    I don't see overwhelming strength, used at will against other nations, as a long term path to world peace

    Yes, but conflict does work well for rallying and unifying your people behind you. Hitler knew it. 1984 knew about it. If Bush didn't know it before, he does now from his massive ratings spikes (from his earlier pathetic ones). Nationalism was at its strongest during the World Wars. Nothing like a good war to secure your position.

    America has little interest in world peace. At the very least, maintaining a divided, weakened Arab region (at least until the oil is gone) is very much in her interests.