Slashdot Mirror


Air Force Looks To Laser-Proof Its Weapons

slugo writes "This wired.com article has probably the coolest laser destruction video you have ever seen. The video shows the Israeli and US Air Force working on laser defense systems. The US Air Force is starting to look for ways to laser-proof its bombs and missiles — with spray-on coatings, no less. They think everyone is going to figure this laser thing out sometime and need a defense against what they are already very good at — shooting things out of the sky with a laser."

69 of 347 comments (clear)

  1. It's obvious, isn't it? by JeremyBanks · · Score: 4, Funny

    Cover everything in mirrors.

    1. Re:It's obvious, isn't it? by oldspewey · · Score: 3, Funny

      Cover everything in mirrors.

      ... preferably shaped like a disco ball, and also incorporating a loudspeaker system that plays a continuous loop of The Trampps "Burn baby burn, disco inferno"

      --
      If libertarians are so opposed to effective government, why don't they all move to Somalia?
  2. Not so obvious... by Firethorn · · Score: 5, Interesting

    Doesn't necessarily work as well as it does in scifi. Mirrors aren't perfect, and tend to gather things like dust, which reduce their efficiency even more. Not to mention different mirrors vary in their effectiveness with different spectrum lasers.

    Shouldn't matter much, but at the high powers weaponized lasers operate at, they quickly destroy mirrors.

    As for working on anti-laser stuff, well, it's best to keep three steps ahead militarily wise - tends to keep your casualties down.

    --
    I don't read AC A human right
    1. Re:Not so obvious... by v1 · · Score: 5, Interesting

      a simple chrome coating can add a few seconds of protection for a shell, enough to prevent it from being destroyed before it reaches its target. Mirrors are vulnerable because the reflective surface is usually very thin and poorly heat-protected. Chrome a shell and the shell serves as a heat sink to dissipate most of the energy the chrome actually ends up absorbing in the first place. Chrome's a lot hardier than a few microns of silvering.

      The lasers weren't blowing holes in the shells, they were cooking them. They aren't nearly as devastating as you might at first believe. Several of their demos required several seconds to detonate the incoming round. If you can buy another 3 seconds of time on a shell, that's probably enough to beat the laser. You only have to survive the heat from the time you are acquired to the time you pass out of view of the laser.

      I'm more interested in how they are generating that much laser energy. Most lasers of that calibre are chemical, and I didn't see what I would expect of a chemical laser. Being able to engage several targets one after another rapidly is a big plus over traditional chemical lasers, which require large amounts of chemicals which have to be pumped in, triggered, and vented to be replaced with more chemicals to fire again. The large flying laser beds work this way and I don't even know if they can fire more than once without landing and refueling with more chemicals. (though they are certainly more powerful than the one demo'd here)

      They also demo this in the desert every time I see it. No clouds, low humidity, line of sight. Guess what laser weapons don't do well in?

      --
      I work for the Department of Redundancy Department.
    2. Re:Not so obvious... by Prune · · Score: 3, Insightful

      This is a deuterium fluoride chemical laser. Indeed, in one of the infrared segments you can see the heated exhaust behind the unit.

      --
      "Politicians and diapers must be changed often, and for the same reason."
    3. Re:Not so obvious... by Firethorn · · Score: 4, Informative

      Last time I saw a specification for the laser mounted in a modified 747, it had 30 seconds of firing capacity, and was capable of being turned on and off at will.

      That 30 seconds was considered sufficient to engage something like 5-15 targets.

      --
      I don't read AC A human right
    4. Re:Not so obvious... by Brain_Recall · · Score: 3, Informative

      Chrome might help with lasers, but it'll decrease other factors such as stealth, both visual and radar. Older fighters (think P-51 Mustang or B-29 Superfortress) often went out with polished aluminum skins. Later generations opted to increase the weight by adding paint, so that they could get additional visual camouflage both when on the ground and in the sky (depending on where they were being deployed they would go with different color schemes, though lately the services prefer the general-all-around-good patchy-gray). I'm no specialist, but I also imagine a chrome/polished surface isn't the best radar absorbent material available.

    5. Re:Not so obvious... by WindBourne · · Score: 3, Informative

      No clouds, low humidity, line of sight. Guess what laser weapons don't do well in?
      Yeah, our DOD ppl just can not think for themselves. Thank God we have you to point out the screw ups that we make. Or, you can think that perhaps not all is a fake:
      Very quickly, deuterium was dropped in favor of hydrogen, since it is far less costly and more readily available. However, later it was realized that HF produces infrared radiation in the 2.6 to 3.1 m waveband, a region of the spectrum absorbed by water vapor in the atmosphere. Interest was renewed in DF, which produces radiation in the 3.7 to 4.2 m band, which passes easily through the atmosphere.
      THough to be fair, we still need a line of sight. Of course, that could be bounced off a sat.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    6. Re:Not so obvious... by budgenator · · Score: 2, Interesting

      phenolic resins are pretty heat resistant or maybe something that breaks down endothermicly when irradiated with IR.

      --
      Apocalypse Cancelled, Sorry, No Ticket Refunds
    7. Re:Not so obvious... by Solandri · · Score: 2, Informative

      Will chrome even work against that? It looks like a DF laser outputs light at 3.7-4.2 micrometers, which puts it in the mid-infrared. That'll go right through clouds. Is chrome reflective at that wavelength?

    8. Re:Not so obvious... by KDR_11k · · Score: 2, Insightful

      Bounced off a sat? How would you do that? You can't reflect this laser because it melts your mirror and it would be even worse if you could (just put the same material on the projectile).

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    9. Re:Not so obvious... by Hal_Porter · · Score: 2, Interesting

      I wonder if the US could use lasers to shoot down Chinese missiles fired at Taiwan?

      Actually from what I've read Chinese missiles are not a mortal threat to Taiwan now

      http://meizhongtai.blogspot.com/2005/11/chinas-ballistic-missiles.html

      Assuming the Chinese missiles are on the more reliable end of the estimates, 10% (or 47 missiles) are still lost to mechanical malfunctions. That leaves 420 missiles headed for Taiwan

      I personally would guess that the [Taiwanese] Patriots [missile defense] would have a 50% kill rate, but to be honest I have no data to back that estimate up. Based on my estimates, Taiwan could kill 100 missiles before they reach their targets (with their current Patriot capabilities), bringing the number that would cause damage down to 320

      CSS-6s have a circular error probability (CEP) of 280 meters. CSS-7s have a CEP of 200 meters. With this limited degree of accuracy, it would take 44 CSS-6s or 23 CSS-7s to destroy a target with 75% certainty.* Thus, if China's missile batteries are composed equally of CSS-6s and CSS-7s, China could expect to destroy ten buildings with 75% certainty using all of its missiles (except the 233 it has held in reserve). If no missiles were held in reserve and thus 530 missiles reach their targets, 15 buildings could be destroyed with the same degree of certainty.

      Though it actually seems like Taiwan should develop its own missile defense system in parallel with trying to buy PAC3 batteries and missiles from the US.

      --
      echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
  3. That's why you need the friggin' sharks! by Biff+Stu · · Score: 5, Funny

    That's why you need sharks to go with your lasers. You think you can defend yourself with mirrors, do you? Don't you know that sharks like to eat shiny things?

  4. Simple business plan. by Chairboy · · Score: 5, Funny

    1. Buy all the Krylon 'Chrome' spray paint.
    2. Relabel it and sell it to the government as 'Anti-Laser Shielding'.
    3. Profit!

    Ha ha h- wait... there's a step #2. There's never a step #2. wtf

  5. Re:One of the best laser defenses by gnick · · Score: 2, Insightful

    Sorry for the self-reply, but my brain's still spinning. White Sands missile range had some success shooting down artillery shells, but it had a hell of a time with it. Basically they just spin to damned fast to heat up any single point enough to cause the device to fail.

    I am not an aeronautic engineer, but would spinning a bomb be efficient/effective? What about missiles?

    Probably more difficult than a reflective spray, but spinning could be predicted and could still have a competent guidance system with existing targeting methods.

    --
    He's getting rather old, but he's a good mouse.
  6. well that was a waste of money by Brain+Damaged+Bogan · · Score: 5, Insightful

    my sharks-with-freaking-laser-beams missile defense is useless now

    --
    -- Sex is the antonym of pringles. Once you pop it's time to stop.
    1. Re:well that was a waste of money by Repton · · Score: 3, Funny

      One of these days, Slashdot will post a story with the word 'laser' in the summary and people won't tag it "sharks"...

      (probably because Slashdotters will all be too busy playing DNF to comment)

      --
      Repton.
      They say that only an experienced wizard can do the tengu shuffle.
  7. Armour them and spin them. by khasim · · Score: 4, Interesting

    The problems with lasers is that the need to punch through the armour in the time they can stay on target.

    #1. Spin them. If the laser cannot hit the same spot for X fragments of a second then it cannot burn through (unless you get a bigger laser).

    #2. For when the enemy gets a bigger laser, you coat the missile in a nice insulator. Something like carbon.

    So now the laser has to punch through the carbon armour before the missile rotates new armour into sight.

    1. Re:Armour them and spin them. by davester666 · · Score: 4, Funny

      Instead of carbon, how about that magical substance known as: Tin Foil.

      If it's good enough to stop the beams entering my head, it should be good enough to stop the beams from entering missiles!

      --
      Sleep your way to a whiter smile...date a dentist!
    2. Re:Armour them and spin them. by rtb61 · · Score: 5, Informative
      Time to stop thinking of lasers as light and start thinking of them as particle cannons. So it all depends on the type of particle you a firing at the target, whether it passes right through the armour to target the components you a particularly after, or even if it actively targets the armour as part of the destructive affect.

      It is all about how much energy you want to get on target, the nature of that energy and the affect you wish to achieve.

      So, minimal amount of energy solution, target CPUs and get all the 0s to be 1s and those smart weapons go stupid and don't target targeting anything ;D.

      --
      Chaos - everything, everywhere, everywhen
    3. Re:Armour them and spin them. by Anonymous Coward · · Score: 5, Funny

      target CPUs and get all the 0s to be 1s and those smart weapons go stupid and don't target targeting anything

      I see they got to yours already.

    4. Re:Armour them and spin them. by DaveAtFraud · · Score: 2, Interesting

      As a guess, the artillery round was spinning as was at least one of the rockets engaged (visible in the video). Any sort of insulator means taking out either shell casing or explosive or both. Tends to make the round less lethal and may also mess with the ballistics. The other guy has to do this to all of his rounds since he doesn't know which ones will be engaged by a laser defense. So you end up making the other guy let's say 25% less effective everywhere because you have a laser defense at a few places.

      Cheers,
      Dave

      --
      They that can give up essential liberty to obtain a little temporary safety deserve neither safety nor liberty.
      Ben
    5. Re:Armour them and spin them. by budgenator · · Score: 5, Insightful

      yup the 81MM mortar is a smoothebore but it's round has fins at the base that are canted so the projo spins in flight. 81's are slow too, after you drop one down the tube you can look up and see the round about 100m down range and watch it going until after it's a little past it's max ordinate and it disappears. Howitzers have a rifled barrel so the round spins. All artillery rounds that I know of have a fuse that doesn't arm until the round has spun so many times, this prevents most barrel bursts. Shooting one 81 doesn't impress me, shooting 3 fired in a ripple that's getting interesting; shoot down 3 fired at the same time I'm impressed, but remember real world is going to be somebody see all the loud IR energy pointing at the laser source and they are likely to answer with 3 81mm;s in flight, backed up by three salvos of 3 60mm mortars all taking the high trajectory while 6 more 155mm howitzer rounds are coming in low and fast.

      --
      Apocalypse Cancelled, Sorry, No Ticket Refunds
    6. Re:Armour them and spin them. by spyder-implee · · Score: 3, Insightful

      That's right, I think the main reason Israel is so interested in these is because they are easily placed in residential areas to protect them from Palestinian rockets which 'accidentally' veer into civilian areas.

      --
      Take what ye can. Give nothing back!
    7. Re:Armour them and spin them. by Ihlosi · · Score: 3, Informative
      Electromagnetically?

      Photons don't carry a charge. You'll have better luck trying to focus them with gravitation. All you need is a black hole of the appropriate mass.

    8. Re:Armour them and spin them. by Ihlosi · · Score: 2

      The pistol shrimp has an excellent weapon that reaches the temperature of the sun. We could use bio-mimicry to create a nice weapon against missiles.

      Yes, once you get the missile underwater, it'll be really easy to zap them this way. Heck, getting it underwater might be enough to neutralize it, unless you're dealing with a torpedo.

      On land, this won't work for several reasons. One of them is the really slow speed of sound air. Good luck trying to hit anything moving faster than your sonic shockwave.

    9. Re:Armour them and spin them. by Urkki · · Score: 3, Insightful

      That's just what I was thinking. This gadget is easily defeated by simply saturating the target area with shells

      Uh... If you're up against a technologically and materially superior enemy, saturating the airspace with artillery fire is not done "easily". It could be achived temporarily with good tactics, but in general just trying to do it is a very quick way to do a suicide. You see, a technologically superior enemy (ie. the one with the state-of-the-art defensive lasers) also has superior counter-artillery capability, and will wipe out your artillery as soon as it tires any kind of concentrated bombardment.

    10. Re:Armour them and spin them. by Hijacked+Public · · Score: 2, Funny

      Which of course explains the denial surrounding the project to raise sea levels so all warfighting has to occur underwater. Discovered by meddling climatologists, the entire plan was put into jeapordy, so a massive media campaign was mounted to discredit them.

      I'm suprised you've not heard about it.

      --
      "Sacrifice for the good of The State" - The State
    11. Re:Armour them and spin them. by Firethorn · · Score: 3, Insightful

      As effective as that strategy may be, it does raise the cost of the mission quite a bit.
      With any luck, it will keep the US gov't from wiping entire villages on the cheap 'just to be sure' and moving on to precision strikes.

      Are you talking about enemy forces using laser weapons against US ones? Because if so one valid solution would be saturation - you can only shoot down so many bombs/rockets/morters.

      So having an effective anti-munition laser is probably going to encourage saturation attacks - with the attendant misses, whether by failed guidance, poor aim, and munitions still armed that lose guidance due to the laser.

      They just prefer to use (cheap) unguided weapons, which might miss a bit but makes up for it with a bigger bang.

      Uh, no. We use the guided stuff all the time, matter of fact I believe that the majority of the bombs we drop today a precision guided. The guidance system doesn't always work, but we try. Even our dumb bombs are dropped on a rather precise basis today.

      As for bigger bang - even the MOAB is technically guided, the difference between a 'dumb' unguided bomb and a guided one is simply the addition of a guidance package.

      And, quite frequently, the guidance package costs more than the bomb.

      Laser defenses work better against opponents with relatively limited assets - palestinians, for example, can only get ahold of so many rockets. They currently choose to mostly stutter them out, producing a more or less constant presence, effect on israeli morale. The damage to life/infrastructure is actually pretty insignificant. The same deal with insurgents/terrorists in Iraq/Afghanistan.

      With some laser systems, a soletary rocket becomes a non-issue, even three-six might be handled by a single laser depending on the laser's attributes. So they'd have to switch to mass attacks. Morters and rockets don't need expensive, hard to hide tubes like artillery does, so that's handlable, but having to warehouse rockets until you get enough to penetrate the laser defenses in a meaningful way hurts in a number of ways.

      First would be that both Isreal and US Forces have active intel agencies - the stockpile of rockets is more likely to be found and subsequently bombed or otherwise eliminated. This results in NO rocket attacks(bad for them). Second would be that many of these rockets are built on the cheap - their stability isn't the best, so stockpiling them for an effective attack increases the chance of an accident, again costing the terrorists/insurgents casualties and supplies. Third would be that while a trickle of rockets damages morale, it doesn't generally get Isreal or US Forces on the warpath. An attack of a couple hundred after no attacks for months might. By warpath I don't mean a flyby attack with a fighter or chopper. I'm talking about ground assault, massive retaliation.

      --
      I don't read AC A human right
    12. Re:Armour them and spin them. by kitgerrits · · Score: 2

      I was referring to the US having to fire 6 mortars instead of one, just to hit the target.

      Apparently, I have been out of the loop for quite a while.

      Last time I spoke someone 'from the field'(former marine), the US still had the tendency to 'soften up' hard targets.
      (Not quite Geneva-endorsed, remember the surfing scene from Apocalypse now?)

      Also, in the news, you see attacks where the US blew up the entire village,
      just to blow up someone's house.
      And he wasn't even home.

      Apparently, the darn things are actually being used these days:
      http://www.pulitzercenter.org/openitem.cfm?id=868

      I used to have an ambition to work for Thales and help build more precise weaponry, but I gave up after I found out they never got used 'because they cost too much'.

      Thanks for the heads-up.
      It might help if the US were to show that they actually try avoid collateral damage, these days.
      It might help improve the image, internationally.

      --
      "I was in love with a beautiful blonde once, dear. She drove me to drink. It's the one thing I am indebted to her for."
    13. Re:Armour them and spin them. by Eudial · · Score: 2, Informative

      So it all depends on the type of particle you a firing at the target, whether it passes right through the armour to target the components you a particularly after...

      X-ray or gamma-ray lasers could do this, but there are some (severe) practical problems involved. An atom emitting an x-ray photon tends to recoil a bit, so the photon has only part of the energy from the transition - not enough to cause emission of another photon from the next atom, as happens in a laser. And even if you did produce an X-ray laser beam - how would you focus it? Mirrors and lenses don't work that well with x-rays.

      I'd think the obvious choice would be to go with a longer wavelength, as opposed to a shorter one. If your laser has a wavelength longer than the reflective surface's thickness (say 1 cm, microwaves), it will pass right through it like it was never there.

      --
      GAAH! MY PRINTER IS ON FIRE!!! PUT IT OUT! PUT IT OUT!
    14. Re:Armour them and spin them. by ravenshrike · · Score: 2, Insightful

      Except their fire is perfectly on target. As long as Hamas/Fatah/Hezbollah use civilian areas for their operations, there are effectively from a war crimes standpoint on return fire no civilians.

    15. Re:Armour them and spin them. by Ihlosi · · Score: 2, Informative
      It takes anything of the appropriate mass, doesn't need to be a black hole.

      Yes, but anything of the appropriate mass that isn't a black hole is going to be _way_ too large to focus a laser beam. It's just going to block it instead.

  8. It seems to slow for mortars. by doublee3 · · Score: 4, Informative

    Judging from the video it seems to be able to shoot blow up 9-10 mortars per minute. But a quick google search showed that the M224 60mm Light Mortar can fire at 8-20 mortars per minute indefinitely or 18-30 mortars per minute for 1-4 minutes. Seems like you'd need a lot of these lasers to make an area 100% protected from mortars.

    1. Re:It seems to slow for mortars. by greyhueofdoubt · · Score: 4, Interesting

      We already have this. It's called the Phalanx sometimes, or just CIWS (close in weapons system). It features a 20 mm vulcan cannon, multiple radars, autonomous operation, and on top of that it can track multiple (dozens) incoming targets as well as its own outgoing projectiles. They can also network together to form a basewide protective shield. They are loaded with a tracer every 20 or 30 rounds and at night the bullet stream looks like the world's most powerful and accurate garden hose- one continuous stream of projectiles. The sound and feeling even from 200 yards is something you'll never forget, especially after you clean your pants the first time they fire without warning. Watching 5 of them fire in synch during a test is awe-inspiring (in good and bad ways, I guess).

      Yeah, lasers, great... But in a deployed area, the CIWS provides early warning and interception of incoming mortars and missiles and doesn't require anything more than a generator and a full magazine. Someday lasers might provide an even better shield but until then we could use a few more CIWS in the field.

      http://www.youtube.com/watch?v=cgpQBZF2sZQ

      You should watch that video- dove or hawk, any geek has to admit that the phalanx is one bad ass mutha.

      -b

      --
      No offense, but I've stopped responding to AC's.
    2. Re:It seems to slow for mortars. by Dun+Malg · · Score: 5, Interesting

      Three words: Counter Battery Fire :)

      Heh. Reminds me of a story about a sort of makeshift counterbattery fire someone once told me. Small Lebanese army military camp in Lebanon during the civil war, and every afternoon they'd go outside and play volleyball. Local shia militia jerks noticed the pattern and started dropping mortar rounds in the middle of their volleyball game every day. Immediate patrols trying to find them turned up nothing, as the shia militia jerks simply drop a few rounds, picked up the mortar tube, kicked sand over the base plate, and ran. Tiring of this, the Lebanese army guys measured the angle of the holes at the bottom of the impact craters made by the fuse assemblies being blown into the ground and used trigonometry to figure out where the rounds probably came from--- about a quarter mile away. Based on the size of the rounds, they knew the shias weren't taking the heavy base plate with them when they ran. They went out there in the middle of the night and, sure enough, right where they calculated, they found the mortar base plate. They picked it up, buried a big antitank mine underneath, and carefully concealed the plate just as they found it. Next day, they went out to play volleyball. Five minutes into the game, they head a loud explosion from the direction where the plate was. No mortar rounds ever interrupted their game after that.

      --
      If a job's not worth doing, it's not worth doing right.
    3. Re:It seems to slow for mortars. by budgenator · · Score: 3, Informative

      Artillery have been hip-shooting for decades, i was doing it since before GPS so with GPS it's got to be almost as accurate as set, surveyed shoots. As soon as you shoot you scoot because you just automatically assume somebody is going to drop a big steel present on your former position and it'll be there in about a minute.

      --
      Apocalypse Cancelled, Sorry, No Ticket Refunds
    4. Re:It seems to slow for mortars. by Shihar · · Score: 2, Interesting

      Eh, if you can turn 15 mortars into 5, if have done yourself pretty good. On top of that, realize that the longer you fire mortars (especially against Americans or Israelis), the far more likely an artillery shell is going to come your way. Every time you toss up a mortar, a radar station is tracking it. The Israelis have gotten so good at it, that they can practically return fire before the rocket/mortar has hit the ground. These days, the only way Hamas and the like can take a pop shot across the border is to do it from a place of high civilian density, and then seriously run like hell the second they have unloaded.

      Personally, I am kind of surprised that Israel hasn't put something like a phalanx in spots that are prone to rocket attack... though I suppose a few thousand bullets coming down into civilian areas might have something to do with it.

    5. Re:It seems to slow for mortars. by im_thatoneguy · · Score: 2, Interesting

      I can see one huge advantage however to a laser based system:

      1) It can be deployed in heavily populated areas without fear of killing an entire village down range.

      If that minigun drops below 45* wouldn't it become a lethal weapon to all parties who happen to be down wind? Those .50 caliber rounds aren't light.

    6. Re:It seems to slow for mortars. by dw604 · · Score: 2, Funny

      What part of the middle east are you from?

  9. The answer is mirv by moteyalpha · · Score: 5, Insightful

    mirv already exists and so does flack. You can't hit what you don't know is a target. There are always limits to energy per unit time per unit area and since we are already 10 trillion dollars in debt destroying things, perhaps that money would be better spent on a plan to grow some crops to eat.

    1. Re:The answer is mirv by Dun+Malg · · Score: 4, Insightful

      perhaps that money would be better spent on a plan to grow some crops to eat.

      We already grow enough crops. Hunger is a politically created distribution problem, not a problem of lack of food.

      --
      If a job's not worth doing, it's not worth doing right.
  10. Re:Um. when did they get good at this? by Prune · · Score: 2, Informative

    It's been able to track on its own since around 2001 or 2002. This is mentioned on one of the wikipedia pages.

    --
    "Politicians and diapers must be changed often, and for the same reason."
  11. Once it discovers it, security becomes an issue by CrazyJim1 · · Score: 4, Insightful

    Hopefully the guy making the decisions weighed espionage. You can really shoot yourself in the foot if you find a counter to your own missle defense and then someone publishes the counter. Do you really need an anti missle defense technology so bad that it is worth endangering your own missle defense?

  12. Dragged along for the ride by Un+pobre+guey · · Score: 5, Insightful
    1. Create an expensive and ostentatious weapons system on which other nations were not willing to squander billions of dollars
    2. Make a cool video about it and circulate it widely. Conceal the real, practical day-to-day performance results.
    3. If a global arms race fails to start, announce that you are also developing a handy-dandy, sure-fire defense against the weapons system only you possess. Caution: increased risk of scam backfiring.
    4. ???
    5. Profit!

    Yet another defense industry scam, and all of us are dragged along for the ride.

  13. Environmental Impact by DougF · · Score: 4, Funny

    of chrome would probably rule out using it as a coating/shield. Its tough enough getting EPA approval to use chromium coatings on stuff that isn't going to go BOOM (such as bearings/anti-corrosive coatings, etc), let alone a proposal that says "We'd like to put chrome on artillery rounds so there are lots of opportunities to leach into water supplies, cause cancer, etc."

    --
    Impetuous! Homeric!
    1. Re:Environmental Impact by smidget2k4 · · Score: 3, Insightful

      See depleted uranium bullets.

    2. Re:Environmental Impact by kitgerrits · · Score: 3, Insightful

      In other words, only use it where you shit but not where you eat.

      Do any American troops ever consider the fact that people might be LIVING in that regions after the war ends?
      (That is what you are fighting for, isn't it, the right to live?)

      This is one of the reasons the US is not welcomed with open arms when they're coming to liberate a country.

      --
      "I was in love with a beautiful blonde once, dear. She drove me to drink. It's the one thing I am indebted to her for."
    3. Re:Environmental Impact by Opportunist · · Score: 2, Interesting

      Imagine this: You have a culture. Let's say, a western culture. You grew up with that culture and for some odd reason, you think it's good. Sure, it ain't perfect, but hey, what is? You have your believes, which may or may not include some sort of God, you have your financial and commercial system which you consider ok, if not good, and you have your country which you consider the best on this planet by default.

      Now someone comes in and says that everything you do is wrong. You're forced to work for The Man and his cronies, they are oppressing you and make you to work for pennies while they get rich, you lack the spiritual guidance of a strong religion and you have to be liberated from such an oppressive and outright spiritually and mentally sickening system.

      Question for 500: Would you fight the Islam invasion? Let's assume for a moment that they and not you have the aircraft carriers, the ICBMs and tanks that outgun yours by a mile.

      Because that's essentially what happens.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    4. Re:Environmental Impact by sabt-pestnu · · Score: 2, Informative

      DU rounds (most often as Armor Piercing Fin Stabilized Depleted Uranium Discarding Sabot) are indeed nasty. In some cases, radiation measured at the outside of the shipping container exceeds 0.5 mR/Hr.

      On the other hand, it has better penetration, at longer ranges, than titanium core ammo.

      I imagine the concerns for the folks using this ammo run something like...
      1) Do I need the advantages of this ammo enough to load/use it?
      2) If so, what is it going to do to my (future progeny)?

      I wouldn't even imagine that "what about the locals" even enters into it, particularly if it looks like those same "locals" are shooting at you at the time.

      As for the locals resenting the US military on the basis of uranium rounds? Love it if you'd point me to a specifically reported case of it. After all, they have so many other reasons to resent the US military ("Infidels!", for instance) that it's hard to settle on something so particular.

      If you're thinking "Iraq", you might consider that's the same place that locals stole radioactive material and used it for decorations, or dumped it in the sewer when they found it was bad for them.

  14. Re:Laser-proof first post by Arthur+Grumbine · · Score: 4, Interesting

    Your first post is in as much danger from lasers as anything else. Which is none at all. It's been 25 years and untold billions of dollars secretly(gotta love the Cold War) pumped into viable military applications for lasers. What do we have to show for it?!? An entirely-useless-chemical-laser-carrying 747 that:

    1) Has gotten so far in that last 12 years of focused development that it has finished "target illumination" testing.
    2) Has 40 shot maximum payload (according to the entirely optimistic marketers of this project). They admit that it is only really specced for 20 shots now, though.
    3) Does NOT have any variety shark attached to it.

    I think Northrop Grumman, Boeing and all the other defense contractors had the following plan when they met with Reagan:
    1)Convince The Gipper that Green lasers is just what's needed to kill the Red Communists. ("It'd be just like that recent film by that young George Lucas, and we know how much you love movies, Mr. President."
    2) (optional) ???
    3) Profit!!!

    --
    Now that I think about it, I'm pretty sure everything I just said is completely wrong.
  15. EESTOR by WindBourne · · Score: 2, Interesting

    If EEstor is real, no doubt the feds are going to buy a lot of this. We have railguns and lasers coming on line. Our new DDX will have both. The ABL is designed not to just shoot rockets, but also to take out sats (it is flying at 40-50K feet; a great deal less atmosphere). And of course, our f22 were designed to handle lasers and we will shortly have them on their. My understanding is that future guns for the F22 will also be rail guns. Funny thing is, that most countries are gearing up with crewed planes. We are moving towards automated because we have figured it out that a human is not going to be able to manuever fast enough to avoid these things. But an automated system combined with a remote pilot, just might. Even the M1 is to be modified for these. And EEStor may make it all possible. All these toys will be held back for the next real war (and not just a bungled invasion). I think that any pres that tries to bring these forward for something as small as Iraq/Afghanistan would be lynched by the DOD.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  16. Re:Laser-proof first post by WindBourne · · Score: 3, Informative
    In response to the American Strategic Defence Initiative and continued military use of the shuttle, the Soviet Union fired a 'warning shot' from the Terra-3 laser complex at Sary Shagan. The facility tracked Challenger with a low power laser on 10 October 1984. This caused malfunctions to on-board equipment and discomfort / temporary blinding of the crew, leading to a US diplomatic protest.
    And that was just the soviet union in 1984.

    Pentagon confirms Beijing's anti-satellite laser
    This was in china in 2005 (confirmed in 2006).

    Now, we have an "entirely-useless-chemical-laser-carrying 747"????
    1. Exactly what do you think that is for? Rockets in boost? A laser in space would do a better job. Have you looked closely at the turitt on the front. Surprise, it can point and shoot UPWARDS. Now we have the ability to take ALL chinese sats around the world, not just approaching our soil.
    2. Do you think that this is our ONLY laser? What exactly do you think happened in 1977, when Carter found out that USSR had a ground based laser? This is the man responsible for stealth aircrafts. He is the one that wanted to remove all of the large naval ships except for aircraft carriers and SSBN, and move to smaller heavily automated crafts that worked together (surprise; that is the navy that we are moving to now). Take a trip to Alaska sometime. Wonderful things up there to see (or perhaps NOT to see).
    --
    I prefer the "u" in honour as it seems to be missing these days.
  17. Best Offense Is a Good Defense by Doc+Ruby · · Score: 2, Informative

    what they are already very good at -- shooting things out of the sky with a laser.

    No, the Pentagon still sucks at shooting things out of the sky with a laser. They are excellent at spending $BILLIONS on trying, over and again, for decades.

    Maybe they're laser-proofing everything because they're so bad at lasering stuff that they're afraid they'll laser our own stuff. At the very least, it's innovation in spending $BILLIONS on lasers.

    --

    --
    make install -not war

    1. Re:Best Offense Is a Good Defense by kahei · · Score: 2, Insightful

      So pathetic, it *hurts*! This is what the internet is truly for!

      --
      Whence? Hence. Whither? Thither.
  18. Use an optical cloaking device by yorkshiredale · · Score: 2, Interesting
    If you can wrap the missile in an optical cloaking device (http://www.physorg.com/news94744716.html) then the incoming laser energy should just 'flow' around the body of the missile and exit the other side.

    The resulting dispersal of the laser energy would prevent the missile from being seriously damaged.

    --
    The opinions expressed here are those of this individual, and may not reflect the policy or practice of the collective
    1. Re:Use an optical cloaking device by Nazlfrag · · Score: 2, Interesting

      Or perhaps just use transparent materials. World War III will be fought with Molotov cocktails.

    2. Re:Use an optical cloaking device by stjobe · · Score: 3, Informative

      "I do not know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones."
      -- Albert Einstein

      --
      "Total destruction the only solution" - Bob Marley
  19. The Scots had anti-laser defences centuries ago by chebucto · · Score: 2, Funny

    In battle, they would don a full-length ball gown covered in sequins. The idea was to blind your opponent with luxury.

    A more modern tack might simply be to let Frank Ghery design the bomb casing. The high-strength reflective materials would avert damage, while the deconstructionist curved form would, with luck, send the beam back to the attackers, using their own laser against them like in a cliched Star Trek episode.

    --
    The English word fart is one of the oldest words in the English vocabulary.
  20. Well played, sir... by Arthur+Grumbine · · Score: 3, Informative

    Your use of a conspiratorial tone in combination with a series of rhetorical questions and vague, but scary, implications in the text you quoted have swayed some of the moderators. Well played, indeed! To that I can only respond, from your own sources:

    From the Terra-3 page of your "Encyclopedia Astronautica":
    The first applications would have to be limited to anti-satellite, and then primarily to blind optical sensors --Hmmmm...a high-powered flashlight...
    Remember: from your own quote it was not "discomfort and temporary blinding" but instead there was a "/" in there. Meaning that the discomfort was the temporary blinding.

    Alas, your Register article doesn't fare much better in supporting your beautifully possible theories if you read past the first line. Heres's the second line for your benefit:
    The high-powered light was able to blind onboard cameras, acknowledged National Reconnaissance Office director Donald Kerr...
    So, if this is the best you have to show, I'm afraid, despite how incredibly impressive really bright lights are, I'll stand by my previous statements about the uselessness of the current military laser technology. Except for what the Men In Black have, of course.

    --
    Now that I think about it, I'm pretty sure everything I just said is completely wrong.
  21. As a former artilleryman... by gillbates · · Score: 5, Informative

    I say, good luck!.

    Even a modest artillery battery, on a bad day, with the hot, dusty wind in their face and half their crew asleep, can manage to put 18 rounds downrange, per minute. With a 30 second flight time (hey, it varies with range), you've got less than two seconds per projectile if you're going to destroy them all. And the laser takes several seconds per round to destroy it. And that's without the coating.

    So here's what you do: you fire a 'smurf' round - that is, a hollow steel round as your first projectile. Because it doesn't have any explosive, the laser will track it and burn it until it hits the ground, paving the way for the remaining rounds to come through without any problem.

    Granted, I think lasers are cool and all, but we already have anti-rocket systems like the Navy's phalanx which seem to be much more effective. The problem is that something like a 3000 rpm chain gun can put more energy on the target than most tactical lasers. Even more embarassing, a .50 cal round can pierce 2 inches of solid steel at ranges greater than 3 kilometers. A single .50 cal round impacting nose of an artillery shell would detonate it instantly. Why not use those precision servos to direct a weapon with real takedown power? Ballistic flight trajectories aren't that hard to calculate.

    And unlike the laser, artillery can hit things beyond visual range, in places obstructed from direct line of sight. Put yourself in a valley, and your laser defense system might not even track the round until its already too late. I think it's a step in the right direction, but they clearly need much more powerful lasers to be practical.

    --
    The society for a thought-free internet welcomes you.
  22. Yawn by Chuck+Chunder · · Score: 2, Insightful

    We already grow enough crops. Hunger is a politically created distribution problem, not a problem of lack of food.

    Every time this comes up someone trots out "it's a distribution problem, not a production problem" line.

    Here's a clue for you, while better distribution might be one part of the solution, so is more production, ie production where food is needed.

    Any solution based on distribution is inevitably reliant on political goodwill. Production can empower people so that they aren't so dependant on ongoing political goodwill.

    --
    Boffoonery - downloadable Comedy Benefit for Bletchley Park
    1. Re:Yawn by Chris+Mattern · · Score: 2, Insightful

      We already grow enough crops. Hunger is a politically created distribution problem, not a problem of lack of food.

      Every time this comes up someone trots out "it's a distribution problem, not a production problem" line.

      Probably because it's the truth.

      Here's a clue for you, while better distribution might be one part of the solution, so is more production, ie production where food is needed.

      True, but the problem still isn't that the technology or capability to grow that food isn't there.

      Any solution based on distribution is inevitably reliant on political goodwill. Production can empower people so that they aren't so dependant on ongoing political goodwill.

      Got news for ya, bunkie. Any solution *period* is inevitably reliant on political goodwill. Your assertion is incorrect; production can't happen without ongoing political goodwill either. The reason these people can't grow their own food is that the local warlord comes and burns the crops to serve his own political ends.

  23. Stay by the phone by Chuck+Chunder · · Score: 2, Funny

    With amazing insights like those I'm sure you'll have a lucrative defence job offer very shortly.

    --
    Boffoonery - downloadable Comedy Benefit for Bletchley Park
  24. And again by Sycraft-fu · · Score: 3, Interesting

    That's not a crop growing problem. The problem isn't that crops can't be grown in Africa, for example. The problem is that the governments there are unwilling to do so. A good example is Zimbabwe. It used to be the bread basket of Africa. It was like the farm states in the US. However, Mugabe has put a stop to that. Now they are a net food importer and their production is next to nothing.

    Food shortage these days really isn't a problem of production. We have the technology and the land to handle it. It is a problem of distribution. The places with large starving populations have governments that are not interested in allowing the problem to be solved, or sometimes have no real government at all and are anarchys more or less.

    This isn't an easy "just throw money at it" kind of problem.

  25. Plywood- no I'm not joking by LM741N · · Score: 3, Informative

    My brother, a University professor, who had a big laser laboratory, covered all the walls with plywood. What happens is that when a strong laser beam hits the wood, the glue vaporizes and spreads out the beam so its rendered much less concentrated. The cheapest laser defense in the world.

  26. Re:Blimp by Bastard+of+Subhumani · · Score: 3, Funny

    Fit them with semiconductor lasers and they'd be LED Zeppelins.

    --
    Only three things are certain; death, taxes, and apocryphal quotations - Ben Franklin.
  27. That would make a good episode of CSI by patio11 · · Score: 2, Funny

    But for the whole implausibility factor. I mean, I can only suspend my disbelief so far:

    "the Lebanese army guys measured the angle of the holes at the bottom of the impact craters made by the fuse assemblies being blown into the ground"

    Yeah. Granted if your calculations are thrown off my five degrees by something irregular -- say, I don't know, an explosion -- you get garbage data which broadens your "X marks the spot" to a few square miles, which is about what you could have guessed given that the shells appear to be coming from thataway and you presumably have a rough idea of how far they could travel. But don't worry, Horatio Caine is on the case, and can infer from the fact that the pollen grain of a deusexis machinus was on one of the spent shell casings that the adversary must have been shooting from next to the greenhouse, on a Thursday, when the gardener was taking his lunch outside.

  28. Huh, I never knew the CIA was military... by Firethorn · · Score: 2, Informative

    The 'oops' you refer to isn't a military issue - it's a CIA issue. The CIA is NOT part of the military. It was CIA intel, CIA planes, CIA operators, CIA guidance.

    When I consider military - I consider organizations under the DoD, the CIA isn't.

    From that oops I can see a number of problems that would of had the US Military going 'hold up'.

    A: Pakistani village - we're not at war with Pakistan(that I've heard), and lacking presidential authorization, we're not going to be shooting there.
    B: Proportionality - Is Ayman WORTH attacking while he's in a village in a neutral country, occupied by it's citizens?
    C: FOUR hellfires? A hellfire isn't the largest missile by any means, but it's still got a good warhead on it.

    Now, don't get me wrong. The military WILL make attacks that WILL kill civilians. Especially when the opponent is a ass that mingles military and civilians - like parking AA guns on schools and hospitals. Though I do know of one such case where we pulled a trainer bomb that had concrete instead of explosive, put a guidance package on it and dropped it on the tank that had been parked next to an occupied school. The idea that 2k pounds of concrete dropped from 30k feet, with a terminal velocity over the speed of sound would bust the seams a bit and render the tank unusable.

    --
    I don't read AC A human right