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Truck-Mounted Laser Guns

bl8n8r writes "Boeing has announced a contract with the US Army to develop laser cannons that are to be mounted atop 20-ton trucks for the purpose of shooting down incoming artillery, rockets, mortars, or bombs. The High Energy Laser Technology Demonstrator project actually shoots stuff instead of just painting a mark on a target for other armament to hit."

76 of 370 comments (clear)

  1. I'm so proud by UncleWilly · · Score: 4, Funny

    to be an American

    Next put them in C-130s, or Jeeps, like Rat Patrol.

    1. Re:I'm so proud by Eternauta3k · · Score: 3, Informative

      Most materials aren't reflective enough, the people who make laser etching machines can tell you how even the best mirrors (gold, polished to under a 1/4 wavelength) are only 80% reflective. That means 20% is being absorbed as heat. With enough power, you could burn through anything.

      --
      Yeah. Would you choose a neurosurgeon who pokes around people's brains in his spare time? I wouldn't.
    2. Re:I'm so proud by R3d+M3rcury · · Score: 2, Interesting

      ...before or after it manages to hit the ground?

      That's the tricky part. You have limited time in which to do this. Also, while I'm not an expert in this stuff, I assume that if you have the mortar spinning, it would be difficult to heat one point to cause a failure.

      Once again, I'm not an expert on this stuff and I may be wrong. That said, here's my strategy for defeating one of these: Fire a group of spinning and reflective mortars followed closely by a larger group of "regular" mortars. At worst, the laser will spend more time destroying the reflective mortars and allow the regular mortars to get through. Firing the reflective and "regular" mortars from opposite sides of the compass might also be useful.

      The unknowns would be how effective spinning and reflective painting would be against this laser and how many mortars would you have to fire to overwhelm the system. Also, to solve this problem you just deploy more of the trucks. After all, we have unlimited tax dollars here in the US to spend on such things...

    3. Re:I'm so proud by donaldm · · Score: 2, Interesting

      Having a laser that can "vaporise" or at least cause the target to breakup and explode is the stuff of science fiction. This is not to say it can't be done given enough money and research but this technology does not come cheap and then you have to ask "is this worth it"?

      The are many solutions of hitting a speeding object some of them cheap and other prohibitively expensive and a "Star-Wars laser" is very much on the expensive side. A cheaper solution and one that has been tested with varying degrees of success is something like a a radar and laser detection and targeting system followed by a rapid firing weapon using conventional or non conventional explosive rounds.

      One ruggedized weapon system that could work well with fast rapid deployment is some thing like a radar and laser detection and targeting system coupled with some thing like a "Metal-Storm" system http://en.wikipedia.org/wiki/Metal_Storm. This type of system could quite easily be built at a fraction of the cost of a laser weapon system and would be much more reliable. Of course if you really need to destroy an incoming projectile over a much longer distance (more than 20km) then a missile system like the "Patriot Missile System" is probably the best thing.

      All weapon systems have strengths and weaknesses and in a war situation it is not necessarily the best or the most innovative technology that can win, although it does help. If you look at history this has proven true time and time again.

      --
      There ain't no such thing as proprietary standards only proprietary formats. Standards are by definition open.
  2. They're getting smaller every day. by AragornSonOfArathorn · · Score: 5, Funny

    Yesterday: 747-mounted laser.
    Today: Truck-mounted laser.
    Tomorrow: Shark-mounted laser.

    --
    sudo eat my shorts
    1. Re:They're getting smaller every day. by zamboni1138 · · Score: 5, Informative

      They're still working on the 747-mounted laser.

    2. Re:They're getting smaller every day. by jamstar7 · · Score: 3, Funny

      Yesterday: 747-mounted laser.
      Today: Truck-mounted laser.
      Tomorrow: Shark-mounted laser.

      Tomorrow afternoon: Large tank of water in the back of a truck to carry shark-mounted lasers.

      --
      Understanding the scope of the problem is the first step on the path to true panic.
    3. Re:They're getting smaller every day. by timeOday · · Score: 4, Interesting

      I'm guess you're being sarcastic, but taking out incoming mortar, artillery, and rockets really would be a boon in most forseeable conflicts including Iraq. For instance: "BAGHDAD, July 10 -- More than two dozen mortar shells pounded the Green Zone on Tuesday, killing three people, including a U.S. military member, and injuring 18, among them five Americans, U.S. officials said."

    4. Re:They're getting smaller every day. by jcr · · Score: 2, Funny

      It's when they get to the roach-mounted lasers that they'll really have a tactical advantage.

      -jcr

      --
      The only title of honor that a tyrant can grant is "Enemy of the State."
    5. Re:They're getting smaller every day. by afidel · · Score: 3, Funny

      Well, the intermediate step would be lasers mounted on trained spy squirrels.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
  3. That's great, but... by AdmiralAudio · · Score: 5, Funny

    How soon will we see these being mounted on the heads of ill-tempered seabass?

    1. Re:That's great, but... by LiquidCoooled · · Score: 5, Funny

      How the hell can the parent be offtopic?

      Dr. Evil: You know, I have one simple request. And that is to have sharks with frickin' laser beams attached to their heads! Now evidently my cycloptic colleague informs me that that cannot be done. Ah, would you remind me what I pay you people for, honestly? Throw me a bone here! What do we have?
      Number Two: Sea Bass.
      Dr. Evil: [pause] Right.
      Number Two: They're mutated sea bass.
      Dr. Evil: Are they ill tempered?
      Number Two: Absolutely.
      Dr. Evil: Oh well, that's a start.

      --
      liqbase :: faster than paper
  4. Damnit! by simp · · Score: 5, Funny

    This government is so incompetent!! Bush screwed up. Again...

    Sharks, I wanted sharks. Is that so difficult?

    1. Re:Damnit! by xENoLocO · · Score: 2, Funny

      Introducing the Bass from GMSea

      --
      "The need to build the internet comes from something inside us, something programmed... something we can't resist."
  5. The adult in me says by the_skywise · · Score: 5, Funny

    Guns of destruction are bad.

    But the kid in me says...

    SA-WEEET!!!!!!

    1. Re:The adult in me says by ArmyOfFun · · Score: 2, Funny
    2. Re:The adult in me says by Chris+Burke · · Score: 5, Funny

      The kid in me is disappointed that the truck doesn't transform into a humanoid robot with the laser held in its hand like a gun.

      --

      The enemies of Democracy are
    3. Re:The adult in me says by LWATCDR · · Score: 2, Insightful

      Guns that stop bullets good.
      Hey I have no problem with defensive systems like this.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
  6. Might work in pure mountain air by EmbeddedJanitor · · Score: 3, Interesting

    surrounding Seattle, but I think you're right. I would not want to fire one of these in the dust and smoke of a typical battlefield. That energy will just get dissipated locally which can't be a GoodThing.

    --
    Engineering is the art of compromise.
  7. No, not really by everphilski · · Score: 5, Informative

    The range to shoot down a RAM (rocket-artillery-mortar) threat is on the range of a few kilometers. Laser attenuation ovr that short a distance is pretty minimal. My master's thesis was on this concept, but swapping out the laser for a gun-launched projectile... you actually don't need that much focused energy to destroy a RAM threat mid-flight.

    1. Re:No, not really by everphilski · · Score: 3, Informative

      The event horizon for a RAM threat is incredibly short. Seconds. Depending on the scenario, if you do not get your shot off within a few seconds of detection, you are dead in the water. Secondly, the amount of energy necessary to take out a RAM is pretty low... on the order of tens of kilojoules. These facts I know from my research.

      (Up until a few months ago, I worked 2 rooms over from some of the guys doing the modeling and simulation for this particular system ... this is a test bed, not the finished product)

  8. Sure... by chaidawg · · Score: 5, Funny

    ...but can it drive a 6 inch spike through a board with its penis?

    1. Re:Sure... by trybywrench · · Score: 3, Funny

      ...but can it drive a 6 inch spike through a board with its penis?
      a girl's got to have her standards

      --
      I came to the datacenter drunk with a fake ID, don't you want to be just like me?
  9. In this day and age? by WindBourne · · Score: 2, Funny

    With the current admin, we are much more likely to put them in a high quality Chery truck (made by china and to be sold shortly by Chrysler).

    --
    I prefer the "u" in honour as it seems to be missing these days.
  10. Oblig. CNC by andrewd18 · · Score: 4, Funny

    Heavy Expanded Mobility Tactical Truck
    Also known as the predecessor to the Mammoth Tank.
  11. power reqs. by trybywrench · · Score: 3, Insightful

    I wonder how much power it takes to run and if it can target multiple incoming threats at once. It would be awesome if it could take on say 5 or 8 incoming mortars at the same time. Even better would be knocking out a barrage of RPG's. I guess the final implementation would be zapping bullets out of thin air which at that point you'd have a "shield" like in sci-fi. Military tech amazes me.
     

    --
    I came to the datacenter drunk with a fake ID, don't you want to be just like me?
  12. My analysis by Xeth · · Score: 2, Insightful

    Pro: Well-paid engineers and scientists are kept in the U.S. at work on neat toy, keeping valuable talent working on a difficult problem.

    Con: Obscenely-paid CEOs who came up with idea to push this useless weapon get a huge payoff, keeping destructive leeches working on the simple problem of continuing corrupt government.

    --
    If your theory is different from practice, then your theory is wrong.
  13. How do clouds and smoke change this? by davidwr · · Score: 2, Interesting

    If there are a few hundred feet of dense clouds and smoke between you and the target, is the laser effective?

    I guess the only consolation is that the enemy will have a harder time seeing you with all the clouds and smoke.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
    1. Re:How do clouds and smoke change this? by everphilski · · Score: 2, Informative

      I don't have numbers to throw at the question ... yes, of course, there is attenuation. My point is, and what I do know from experience, the range to downing a RAM threat is not that far, and secondly the amount of energy you need to impart to down a RAM is not as much as you might imagine (tens of kJ).

  14. So will this be the demise of their ... by PalmKiller · · Score: 4, Funny

    rail gun projects? Nooooo...I think rail guns are way cooler, especially when they malfunction.

    1. Re:So will this be the demise of their ... by Chris+Burke · · Score: 5, Interesting

      Rail guns are what the navy is going to use to replace cruise missiles (which replaced heavy ship artillery). Lots of advantages there -- about the same range and precision and destructive power as a cruise missile, but at a fraction of the cost. Plus has a huge advantage over both cruise missiles and conventional artillery shells in that the ammunition won't explode if the ship gets hit -- though I imagine the gigantic capacitors needed to fire the gun may blow up if charged up and hit, though that'd only be one shot's worth of energy rather than the ships whole payload. Rail guns have a bright future, as long as they can figure out how to keep the gun from destroying itself every shot.

      Lasers so far are mostly being considered for defensive roles to shoot missiles and artillery down. This is a good role for lasers, since first hitting the target at the speed of light is good when you're trying to hit a small fast moving target, and second because the energy needed to destroy a warhead isn't that large.

      Two awesome future technologies, two roles. It's a good time to be a geek. :)

      --

      The enemies of Democracy are
    2. Re:So will this be the demise of their ... by coredog64 · · Score: 2, Informative

      Rail guns are absolutely not a replacement for cruise missiles. A rail gun projectile in ballistic in nature -- if the wind is blowing the wrong way at the target you're SOL. Yes, you can use lasers for terminal guidance but that requires something to paint the target (hard to do when the target is in hostile territory. Being ballistic, it's also vulnerable to the laser defense systems being discussed here. The launch profile for a rail gun also limits the guidance package you can fit. A cruise missile has a very gentle launch profile -- a rail gun that has to accelerate to maximum velocity in under 50 ft. is much more difficult to deal with.

    3. Re:So will this be the demise of their ... by ztynzo · · Score: 2, Informative

      Rail guns are what the navy is going to use to replace cruise missiles
      Realistically, the Navy uses cruise missiles to hit long range targets that are beyond line of sight (usually ~10mi due to curvature of the Earth). While scientists may be able to come up with targeting systems that make extremely high velocity projectiles accurate beyond line of sight, it is highly unlikely that the Navy would retire such a versatile offensive weapon for one that seems very limited in capabilities... (A cruise missile can hit a target on the other side of a mountain, let's see you figure out how to do that with a weapon designed to be fired in a straight line..)

      More likely to replace the 5" .54cal Mk45 and its successors.
    4. Re:So will this be the demise of their ... by Whomp-Ass · · Score: 2, Informative

      All projectiles (including missiles) are ballistic in nature. There is a reason they're called "Ballistic Missles".

      A railgun projectile, acting as a cruise missile would, would simply be the same cruise missile without the propulsion system. The guidance system would be the same, the warhead would be the same, only the manner of providing the impulse would change.

  15. Dude... by Anonymous Coward · · Score: 4, Funny

    After the war, torture, Gitmo, NSA's unwarranted wiretapping and all the other crap that has made me ashamed to be an American, I'm glad that we can even for one brief moment have something cool like this.

    Yeah, sure, we'll probably sad when they end up used to blind baby seals or to violate the Geneva convention (again), but quit ruining the moment, dammit. You made me misread "cherry truck" as "Cheney truck" and I was afraid I'd get zapped in the face by it.

    1. Re:Dude... by jswigart · · Score: 2, Interesting

      As I recall the Geneva Convention is a promise that your country will not engage in certain things, period, and isn't conditional on whether the other side also does. Am I wrong?

      Whether that's 'fair' or not is another issue altogether. Personally I think as the 'better man' as a country we should stick to those rules on principle. It's unfortunate that the scum on the other side exploit our general unwillingness to break the rules.

    2. Re:Dude... by VagaStorm · · Score: 4, Informative
      Because the Geneva Convention states that any country who has signed it is bound by it even if fighting others that have not:
      From http://www.icrc.org/ihl.nsf/FULL/365?OpenDocument

      "Although one of the Powers in conflict may not be a party to the present Convention, the Powers who are parties thereto shall remain bound by it in their mutual relations."
    3. Re:Dude... by howlingmadhowie · · Score: 2, Interesting

      a propos being zapped in the face by cheney: http://www.youtube.com/watch?v=ggecq52sbR0 (in case you don't already know it)

    4. Re:Dude... by Da+Fokka · · Score: 4, Insightful
      How can you violate the Geneva Convention in a war against a country that hasn't signed the Geneva Convention?

      By being a country that has signed the Geneva convention, like the US, Afghanistand and Iraq.

    5. Re:Dude... by AdmiralWeirdbeard · · Score: 2, Insightful

      Also, behaving in a manner contrary to the Geneva Convention releases signatory countries from the requirement that *they* abide by it in conflicts with you. So its basically in everyone's best interest to treat it as law.

      Also also, not torturing people is awesome. It should be done for its own sake.

      --
      Come read my stupid blagablog. Rants and Giggles
    6. Re:Dude... by CrimsonAvenger · · Score: 3, Insightful

      As I recall the Geneva Convention is a promise that your country will not engage in certain things, period, and isn't conditional on whether the other side also does. Am I wrong?

      You're wrong. From Article 2, Chapter 1, of the 1st Geneva Convention of 1949:

      Although one of the Powers in conflict may not be a party to the present Convention, the Powers who are parties thereto shall remain bound by it in their mutual relations. They shall furthermore be bound by the Convention in relation to the said Power, if the latter accepts and applies the provisions thereof.

      Note that you're bound to respect the Convention if your opponent is a signatory, OR if your opponent is not a signatory, but chooses to follow the Convention anyway.

      Note further that most, if not all, of the instances of the USA violating the Geneva Convention in the current troubles are violations of the 1st, 2nd, or 3rd Additional Protocols of the Convention, none of which the USA are signatory to (which means they're not bound by them).

      --

      "I do not agree with what you say, but I will defend to the death your right to say it"
    7. Re:Dude... by anshee · · Score: 2, Funny

      By being a country that has signed the Geneva convention, like the US, Afghanistand and Iraq. And all the time it was so easy :-)
      `/etc/init.d/Afghanistand stop`
  16. Um, what? by Spy+Hunter · · Score: 2, Insightful

    The danger isn't just to personnel: during 2005, two RAF Harrier jets were knocked out on the ground when their Kandahar airbase was rocketed.
    You mean not only are they slaughtering our troops, but they might conceivably injure our Harriers? Something must be done immediately!

    Seriously, WTF?
    --
    main(c,r){for(r=32;r;) printf(++c>31?c=!r--,"\n":c<r?" ":~c&r?" `":" #");}
  17. MTHEL? by Lazarian · · Score: 3, Informative

    Why don't they just work with the already tested MTHEL system?

    1. Re:MTHEL? by BlueParrot · · Score: 2, Interesting

      Are you sure it isn't in fact a follow-up to the THEL ? Also, iirc the THEL used deuterium to power its pumping, which could make it rather expensive. The breakthrough will be when they manage to get solid state lasers ( like Neodynium-YAG ) working like this. I imagine the Israelis will be quite interested in buying a few such devices.

  18. No, that's the adolescent in you. by Ungrounded+Lightning · · Score: 4, Insightful

    The adult in me says ... Guns of destruction are bad.

    No, that's the adolescent in you that says that. It wants to stop killing, hurting, and threatening, and goes after a tool that is capable of such things.

    But once you've had enough time and thought to understand the unintended consequences of the simple "solution" - disarming the law-abiding - you'll reach the adult understanding that self-defense requires force, and that a credible threat of retaliatory force produces a net reduction in killing, hurting, and threatening.

    "Mutual Assured Destruction" works at both the wholesale level (having prevented an all-out nuclear war for over half a century now) and the retail level (convincing crooks they want to leave you alone and either go after an easier victim or find a new line of work.)

    Second-order effects often swamp first-order effects, producing (initially) counter-intuitive results. Part of growing up is learning which situations are like that, and what the useful counter-intuitive solutions are. (To people with less experience this is often mistaken for wisdom, cynicism, or evil.)

    Unfortunately there is a significant fraction of the population that either never DOES grow up or never learns some important lessons about rare, but deadly, situations.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  19. You are no longer of any use to me by Anonymous Coward · · Score: 2, Funny

    I want five megawatts by mid-may.

    1. Re:You are no longer of any use to me by MrNaz · · Score: 4, Funny

      Let's do the math, just coz I'm bored.

      The specific heat capacity of stainless steel is 500j/Kg and from this site I'm going to assume the specific heat capacity of the explosive is the same as "sandy clay" (poor assumption, but this is /. and I can't be bothered doing more research) which is 1381j/Kg.

      Lets assume a 5Kg mortar is 40% propellant, 30% explosive and 30% shell, and that you don't have to heat the propellant. The specific heat capacity of a 2.5Kg object with a 50/50 mix of steel and clay by weight is given by:

      (2.5 / 2) * 0.5(500 + 1381) = 2351.25 Kj/K/Kg

      Lets also say we want to heat the thing from ambient (35 degrees Celcius, coz remember we're in the desers of Iraq) to 100 degrees (I have no idea about explosives, despite the fact that I am a Muslim) in order to detonate it.

      100 - 35 = 65 degree delta

      Assuming that all energy is absorbed evenly, the formula for energy required is:

      e = 65K(delta) * 4.7025 Kj/K/Kg
      = 152.83125 Kj

      Given that watts are a measure of joules per second, assuming you have a quarter of a second "paint time" of the laser on the round, your lazer will need to emit:

      (1/0.25) * 152.83125 Kj
      = 611.325 W

      (Please note: My assumptions are completely bullshit and this figure is probably way off, but it was fun doing them anyway.)

      To put this into perspective, a 20g chocolate biscuit yeilds about 2,200 Kj. So really, forget the billion dollar laser program, just start lobbing chocolate biscuits at your enemy.

      If this post wasn't bizarre enough, if you lob that chocolate biscuit fast enough at your enemny for e = mc^2 to come into play, then that same chocolate biscuit will yield:

      e = 0.02 * (3*10^8)^2
      = 1,800,000,000,000 Kj

      Just sayin'.

      --
      I hate printers.
  20. Dual use? by Lurker2288 · · Score: 4, Funny

    Have any trials been done on using the laser to fill a snide professor's house with popcorn? There could be a big market for this among the college crowd.

  21. Re:How do clouds of popcorn change this? by ArcherB · · Score: 3, Funny

    You make an excellent point. All the enemy needs to do is first fire a barrage of Jiffy Pop popcorn. when the laser hits it, the corn pops and rains down on the target. This should be sufficient in preventing the laser from knocking out the REAL rounds, which are fired second.

    Hey, it works when fired from a satellite!

    --
    There is no "I disagree" mod for a reason. Flamebait, Troll, and Overrated are not substitutes.
  22. YouTube video of prototype by Anonymous Coward · · Score: 2, Interesting

    Here is a youtube link of a prototype system. It can track and destroy more than one target in flight before impact. I know there is a longer version of this video, but I found this one first, you'll get the idea. The longer one shows it engaging artillery shells, rockets, and mortar shells.

    http://www.youtube.com/watch?v=nVxZ9IHTH2E

  23. MTHEL already tested against multiple mortars by vg30e · · Score: 3, Informative

    The Laser in the article is a development of the MTHEL project. The purpose of MTHEL is to defend positions against incoming rockets and mortars. One of the test videos actually shows the MTHEL hitting 3 different mortar rounds launched from 3 different positions all traveling through the air at the same time.

  24. Car Wars! by Curate · · Score: 2, Funny

    Could this be the first step towards a future of heavily-armoured and -armed cars and trucks, complete with laser cannons and oil slick emittors, like in Steve Jackson's Car Wars game?

  25. Re:How do clouds of popcorn change this? by Chris+Burke · · Score: 4, Funny

    All the enemy needs to do is first fire a barrage of Jiffy Pop popcorn. when the laser hits it, the corn pops and rains down on the target. This should be sufficient in preventing the laser from knocking out the REAL rounds, which are fired second.

    So would this be called Jiffy Chaff?

    --

    The enemies of Democracy are
  26. Obligatory by hellfire · · Score: 2, Funny

    Yay... finally!!!

    Popcorn for everyone!!!

    --

    "All great wisdom is contained in .signature files"

  27. Quake 3? by Reddragon220 · · Score: 5, Funny

    So the Navy has railguns and the Army now has lasers - the Air force better get quad-damage or else they're going to get pwned.

  28. Fess up by suv4x4 · · Score: 4, Funny

    The High Energy Laser Technology Demonstrator project actually shoots stuff

    Who wrote that summary, George Bush?

  29. Re:Very useful (defensive) weapon by mi · · Score: 3, Funny

    I get upset when they start making congress pass bad laws.

    Boeing are a member of neither RIAA nor MPAA. What's the problem?

    --
    In Soviet Washington the swamp drains you.
  30. Re:Very useful (defensive) weapon by mi · · Score: 4, Insightful

    Some of us choose not to rejoice in war at all. Some of us are looking for a better way.

    False dichotomy. You can rejoice at some aspect of a war (such as fewer deaths), while still looking for "a better way".

    --
    In Soviet Washington the swamp drains you.
  31. Slashup Mashup by alta · · Score: 3, Funny

    NEWSFLASH:

    Boeing has developed a new squirrel mounted laser. Lasers have been mounted to squirrels and released on the Iranian border. Unfortunatly the squirrels were all captured by iranian police, but not after they fried their eyes out.

    Cost? $50 million nuts.

    --
    Do not meddle in the affairs of sysadmins, for they are subtle, and quick to anger.
  32. When can I get some of this tech? by kabocox · · Score: 2, Interesting

    Forget freaking sharks. I want something like this scaled down on top of my car aimed at birds that dare to poop at my car. I want anti-bird defensives that will fry 'em if they dare to do a fly by near my car.

    1. Re:When can I get some of this tech? by Qrlx · · Score: 2, Funny

      They already have that, it's called a garage.

  33. dogs by phrostie · · Score: 2, Funny

    Oooooooooooooh

    i need one of these for the dogs next door.

  34. MTHEL works, but is too bulky by Animats · · Score: 2, Interesting

    First, if you don't know about THEL, see this video. Beam weapons aren't a joke any more.

    Mobile THEL was a repackaging of the original fixed THEL system into three semitrailers. It's too bulky to deploy and too vulnerable on the ground. This thing is meant to defend against short-ranged mortars, rockets, and artillery. So it has to be sited up near the sharp end. Something more rugged and more mobile is needed.

    Now that everyone has seen THEL shooting down rockets, artillery projectiles, and mortar rounds, the name of the game is making it small enough to be useful. This new project is to get something onto a single large truck that will do the job.

  35. Can't I just make shiny bombs? by Joce640k · · Score: 2, Interesting

    What happens when a laser hits something really shiny? Does it bounce off and heat up something else?

    Is this a case of billions of investment being defeated by a rag and a can of polish?

    --
    No sig today...
  36. The truck they are using by Widowwolf · · Score: 2, Informative

    For all of you who dont know the HEMTT http://en.wikipedia.org/wiki/Heavy_Expanded_Mobili ty_Tactical_Truck/ are 20 ton trucks useful for providing transport capabilities for re-supply of combat vehicles and weapons systems..The HEMTT trucks exist in several configurations: M977 and M985 cargo trucks carry all types of equipment, especially ammunition. A crane is mounted at the rear of the vehicle. M978 tanker refuels tactical vehicles and helicopters in forward locations. M983 tractor tows the trailer-mounted MIM-104 Patriot missile systems. M983 with 30 KW generator and a crane mounted behind the cab towed the MGM-31 Pershing Erector Laucher in CONUS (a MAN tractor was used in West Germany). M984 recovery vehicle uses a lift-and-tow system to recover disabled vehicles in two-to-three minutes. It mounts a recovery winch, a crane and a large storage box. These things have great manuevering capabilities and can knock down several feet thick trees (We used to do it to make shaded parking spots when out on bivouacs.(That and you can make ranger brownies in the Exhaust pipe)

    --
    ~~"Of course, that's just my opinion. I could be wrong." ~~Dennis Miller
  37. Countermeasures: by jafac · · Score: 2, Interesting

    Pack a load of 10 shells, 9 chaff, 1 HE.

    First one is intercepted halfway to the laser truck, explodes, deploys chaff on detonation.
    Second one is intercepted halfway between previous interception, and laser truck, because truck's radar was impaired by chaff, second one explodes, deploys chaff on detonation, closer to truck.

    Lather, rinse, repeat, until the radar's range is too short to give the computer enough time to find an intercept solution.

    Cost to attacker: 9, $500 chaff shells, + 1 $2000 HE shell.
    Cost to defender: $50 Million laser + whatever else the attacker decides to shell with impunity next.

    --

    These are my friends, See how they glisten. See this one shine, how he smiles in the light.
    1. Re:Countermeasures: by Dunbal · · Score: 2, Insightful

      Pack a load of 10 shells, 9 chaff, 1 HE.

      First one is intercepted halfway to the laser truck, explodes, deploys chaff on detonation.
      Second one is intercepted halfway between previous interception, and laser truck, because truck's radar was impaired by chaff, second one explodes, deploys chaff on detonation, closer to truck.


            So you've reduced your rate of fire by 90%, giving me plenty of time to locate, target and destroy your artillery before you can significantly damage my troops. Makes sense.

      --
      Seven puppies were harmed during the making of this post.
    2. Re:Countermeasures: by Telepathetic+Man · · Score: 2, Insightful

      Technically, wouldn't that be counter-countermeasures? Sorry to pick nits.

      Seriously though, chaff is usually just a bunch tin foil and other highly reflective materials. None of which would likely stay in the air long enough to make that much difference. Unless you have a lot of mortars or whatever, you might not have a fast enough rate of fire.

      --
      Just because you can, does not mean you should.
  38. This is cool? by Savage-Rabbit · · Score: 2, Funny

    After the war, torture, Gitmo, NSA's unwarranted wiretapping and all the other crap that has made me ashamed to be an American, I'm glad that we can even for one brief moment have something cool like this. This is cool? The thing wont even fit on a sharks head... unless the US Army has managed to clone a Megalodon from DNA salvaged from a fossilized tooth or some such artifact in which case they have really pissed off the Navy. The Army should have gone for cloning T-Rexes. Now imagine that, a whole regiment of T-Rexes with lasers on their heads, that would convince those Iraqi insurgents to behave in no time flat. It just goes to show what a mess the Pentagon is still in even though Rumsfeld is long gone.
    --
    Only to idiots, are orders laws.
    -- Henning von Tresckow
  39. a flaw in your plan... by tjstork · · Score: 2, Interesting

    If the chemicals needed to shoot down your mortars are significantly lighter than the mortars you fire, advantage goes to the guy with the laser. See, war at this scale is all about who can transport the most stuff to the front first. If you have to bring a truckload of mortars to take out one laser truck, all those things that the laser truck "protects" are going to get you.

    As it is, this is a great weapon that can be used to suppress insurgencies. Insurgents have the element of surprise, but they generally have shitty transport capabilities and have to haul things up for an attack up very slowly. Like, a guy smuggles in a rocket launcher on a donkey. If you take away the likelihood of success of an occasional rocket attack, you've just defeated, militarily, a huge portion of insurgent strategy.

    This makes it far, far easier to impose democracy on new nations, and increases the likelihood that future Iraqs can succeed and much more easily. If we can get something to detect IEDs, we would be golden.

    --
    This is my sig.
    1. Re:a flaw in your plan... by quanticle · · Score: 2, Interesting

      Insurgents have the element of surprise, but they generally have shitty transport capabilities and have to haul things up for an attack up very slowly.

      Well, it depends on what the insurgents are hauling. Sure, for heavy weapons (like artillery and armor), insurgent transport capabilities are pretty crappy. But for small arms and explosives, insurgent transport networks, combined with good caching strategies (like the tunnel-depots in Vietnam) can provide a very robust and reliable supply chain.

      Given that most US casualties these days come from IEDs and small arms (e.g. snipers), one has to wonder how useful this will be in an insurgency. Sure the insurgents do use mortars. However, insurgent mortars generally aren't very accurate and can only really target fixed positions (like US bases), which are hardened against such attack anyway. The real damage from mortar attacks comes from attacks against civilian targets, which fosters sectarian violence and worsens civil strife.

      --
      We all know what to do, but we don't know how to get re-elected once we have done it
  40. Who are you to talk? by Anonymous Coward · · Score: 5, Insightful

    > If your ashamed to be an American, then America is ashamed to have shed blood for your freedom...nuff said.

    Well, I personally don't think Americans fought and died so that we could torture people, or that you speak for the whole country. But that's just me.

    And don't give me any flag waving to say that these kinds of gross national failures happen elsewhere or are somehow acceptable. I flew what was probably the biggest damn flag in the state for a good long time.

    I don't feel like flying it any more because of all the "patriots" who think that saying "This is the best damn country in the world!" is something you use to excuse problems instead of a reason to acknowledge, fix and rise above them! Dammit, you don't fix things by stuffing your head up your ass! The only way you can NOT feel shame is if you have no damn pride in your country to begin with!

  41. So where do you plug them in? by gevantry · · Score: 2, Interesting

    Oh. They'll run off batteries. I wonder what the power requirements will be, how many shots per charge, and recharge time?

    Actually, this could be a boon for developing better batteries, the kind that can be used for electric cars. And, lest we forget, practical hydrogen fuel cells that can keep those batteries charged if not produce enough power to eliminate the need for batteries in the first place.

    The possibilities for spin-off tech may be more interesting than the laser cannons or rail guns.

  42. Re:Not to be a party-pooper... by BoothbyTCD · · Score: 2, Informative

    If you know of a 99% reflective material, patent it now and make lots of money. In the real world however, even precision mirrors top out at 80% or so. That means the other 20% of incoming energy is heating the incoming shell (assuming every shell is polished in a lab before being fired out of perfectly smooth barrels).

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    snig
  43. Re:How do clouds of popcorn change this? by dave420 · · Score: 2, Interesting

    That wasn't a satellite. It was a ship in low-earth orbit. They referenced it being launched from a B1. Though an un-manned satellite would make far more sense, I would have thought.

    I watched the film last night, funnily enough :)