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More on JSF Laser System

An anonymous reader writes "Seems Lockheed Martin has won a contract to equip future versions of the Joint Strike Fighter with a 100-kW laser. Housed in a dome within the aircraft, the laser's turret would emerge for firing [sound familiar?], and the laser itself is spec'ed to achieve airborne and ground kills at a distance of more than six miles. The problem? According to this Aviation Week article, Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat. Maybe the Finnish airforce could value-add to the OEM model." We mentioned this earlier.

419 comments

  1. yum... by Anonymous Coward · · Score: 0

    laser weapons, fun for the whole family!
    good and good for you.

  2. Those Fins... by fonixmunkee · · Score: 0

    Yah gotta love 'em!

  3. Popcorn anyone? by Wireless+Joe · · Score: 3, Insightful

    Can I get mine with extra butter and popped from 6 miles away, please?

  4. sounds more like by graveyhead · · Score: 5, Interesting

    the plot of Real Genius than a star trek episode...

    --
    std::disclaimer<std::legalese> sig=new std::disclaimer; sig->dump(); delete sig;
    1. Re:sounds more like by Anonymous Coward · · Score: 0

      The crossbow project...

      "Now all we need to do is build it!"

    2. Re:sounds more like by Anonymous Coward · · Score: 0

      I immediately thought of Real Genuis, too. I must be a true genius.

    3. Re:sounds more like by letxa2000 · · Score: 1
      "I need 5 megawatts by mid-May." I guess they actually only needed 100k. I guess they were pretty ambitious back in the 80's. :)

      Chris: "You're gullible, Mitch. I'm such an asshole."

      Laslo: "I understand how you feel, Chris, and you're right..."

    4. Re:sounds more like by Anonymous Coward · · Score: 0

      Now where are all those bleeding heart pussies who want to whine about the possibility of the enemy losing their sight because of this terrible laser weapon? Come on out, it was so much fun beating shit out of you last time, it's time to do it again.

    5. Re:sounds more like by Anonymous Coward · · Score: 0

      wouldn't it be possible that enemy soldiers might lose their sight because of this terrible laser weapon? thinking about it makes my heart bleed.

  5. Maybe... by mrthx · · Score: 0, Redundant

    Val Kilmer needs to step up to the challenge.

  6. First "Real Genius" Post! by avdi · · Score: 1, Offtopic

    Now all they need is a 2-ton bag of popcorn...

    --

    --
    CPAN rules. - Guido van Rossum
    1. Re:First "Real Genius" Post! by antis0c · · Score: 1, Offtopic

      Yep, Attack and Humanitarian Aid rolled up into one.

      --

      ..There's a-dooin's a-transpirin'
    2. Re:First "Real Genius" Post! by sessamoid · · Score: 1, Offtopic

      Moderators, for chissakes look at the posting times. This guy doesn't deserve a redundant mod. His post time is only one minute after the first real genius joke (which only got a +2 anyway). He might very well have been the first one to start typing.

      --
      "No, no, no. Don't tug on that. You never know what it might be attached to."
  7. Thats a lot of heat! by warpSpeed · · Score: 2
    900Kw of heat, and only a 100Kw laser? Wow, not to effcient is it?

    I would bet that they could rig up some sort of Athelon style heat sink, the air flow over it at Mach 1 should be able to take care of the heat. That seems the be how much air flow is required in my Dual Athelon system here.

    1. Re:Thats a lot of heat! by spike+hay · · Score: 5, Informative

      900Kw of heat, and only a 100Kw laser? Wow, not to effcient is it?

      Very efficient for a laser. Most lasers get less than 1%.

      --
      If you don't understand any of my sayings, come to me in private and I shall take you in my German mouth.
    2. Re:Thats a lot of heat! by xmnemonic · · Score: 1

      A laser weapons system mounted inside an aircraft probably has a very different heat "profile" than your dual Athlon computer. In the article, they mention using cooling coils. Perhaps you should read it.

    3. Re:Thats a lot of heat! by Waffle+Iron · · Score: 2
      900Kw of heat, and only a 100Kw laser? Wow, not to effcient is it?

      It's more efficient than a the single-digit percentage efficiency of a standard incandescent light bulb.

    4. Re:Thats a lot of heat! by 403Forbidden · · Score: 1

      Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat. Sounds like they need a few Pelters :)

    5. Re:Thats a lot of heat! by brooks_talley · · Score: 2

      Intentionally radiating 900Kw of heat into the air is *not* a good strategy for a stealth aircraft.

      Cheers
      -b

    6. Re:Thats a lot of heat! by brokenbeaker · · Score: 2, Interesting

      If you read the article, you'll see that the heat will get transferred to the fuel. Although this sounds crazy, apparently there will be enough mass so that the temperature change will be only a few degrees.

    7. Re:Thats a lot of heat! by Anonymous Coward · · Score: 1, Informative

      heat absorbed = 900 kW during firing the laser.

      fire laser for 1 second, blow something up
      mess around for 2 minutes (~100 seconds)
      during that time, dissipate 9kW, which is reasonable for the usual systems on a jet fighter

      Shouldnt be a big deal.
      The trick is having an efficient heat-exchange and storage systems (efficient in terms of not costing you too much MORE energy, which would imply more heat production, and in terms of not weighing too much) thats why they wanted to use the fuel- liquid is good for heat stuff

    8. Re:Thats a lot of heat! by spike+hay · · Score: 2

      900 kw of heat is a lot, but not a totally monstrous amount. Maybe the heat created by perhaps 20 full-house heaters going FULL BLAST. (50 kw a heater.)

      --
      If you don't understand any of my sayings, come to me in private and I shall take you in my German mouth.
    9. Re:Thats a lot of heat! by Anonymous Coward · · Score: 0

      Read the article? My god sir, have you forgotten you're on slashdot?

    10. Re:Thats a lot of heat! by NormalVisual · · Score: 1

      Average is actually a little bit better than that - for a typical lamp-pumped industrial Nd:YAG laser, you get about 100 watts CW power using about 3500 watts of electricity (assuming 140 VDC at 25 amps for the krypton lamp). Still not fantastic, but better than 1%. :-) Diode pumped YAGs take that efficiency up to a little under 15% (50 watts CW @ 14VDC/25A), and their numbers are getting better all the time. Mind you, these numbers don't count the extra power needed to run the pumps to get rid of the waste heat.

      --
      Please stand clear of the doors, por favor mantenganse alejado de las puertas
    11. Re:Thats a lot of heat! by spike+hay · · Score: 2

      nd:YAG lasers are quite eficient, along with CO2 lasers. But I am talking about most other forms of lasers, such as Helium-Argon or nitrogen, for example.

      --
      If you don't understand any of my sayings, come to me in private and I shall take you in my German mouth.
    12. Re:Thats a lot of heat! by Anonymous Coward · · Score: 0

      That's a helluva heater - I think it would cost something around $50-$100 per day to run. I can't remember ever seeing a breaker > 30 amps at higher than 220 V in a house - that'd be more like 6-7 kW.

    13. Re:Thats a lot of heat! by spike+hay · · Score: 2

      My resistance heater (which is very inneficient compared to the heat pump) goes on only on the very coldest nights during the winter, like when it gets below zero. The resistance heater eats up gigantic amounts of power. When going full blast, it can use 50 KW. We also have a fairly large house.

      --
      If you don't understand any of my sayings, come to me in private and I shall take you in my German mouth.
  8. Uplift saga by bravehamster · · Score: 2
    Anyone remember the Uplift Saga by David Brin? In the first book, can't recall the name, they were flying a spaceship through the upper parts of the sun, and they were using a laser to dissipate heat. So....was David Brin talking out of his ass, or is there really a way to put the heat generated into the beam?

    --
    ---- El diablo esta en mis pantalones! Mire, mire!
    1. Re:Uplift saga by Anonymous Coward · · Score: 0

      I always thought the refrigerant laser on the sundiver would be a violation of the 2nd law of thermodynamics.

    2. Re:Uplift saga by Door-opening+Fascist · · Score: 2, Informative
      Anyone remember the Uplift Saga by David Brin? In the first book, can't recall the name, they were flying a spaceship through the upper parts of the sun, and they were using a laser to dissipate heat. So....was David Brin talking out of his ass, or is there really a way to put the heat generated into the beam?

      I know lasers are often used to lower the temperature of small numbers of atoms in order to observe quantum effects, among other things. This is not the same as dissiptating heat, mind you. Heat is a measure of radiation, whereas temperature is a measure of molecular motion. I would imagine that Brin got his vocabulary mixed up.

    3. Re:Uplift saga by be-fan · · Score: 2

      You can use lasers to lower temperatures, but that's by using the energy of the laser to cancel out the vibrations of the atoms, not by putting energy into the laser beam.

      --
      A deep unwavering belief is a sure sign you're missing something...
    4. Re:Uplift saga by jovlinger · · Score: 1

      those cooling lasers work like throwing marbles at a bowling ball to control its motion (ie, rather than moving just energy, you need to fiddle with momentum).

      The cool bit is that the lasers are tuned so that doppler shift decides whether the atom absorbs a photon (is hit by a marble) or not.

    5. Re:Uplift saga by SysKoll · · Score: 2

      Too bad the above was posted as AC, because it's absolutely right: The laser-to-dump-heat is against the laws of thermodynamics.

      You cannot generate power from ambiant heat. You need to transfer it between its source (here, the star) and a heat sink. The heat sink is normally a radiator warmer than the ambiant temperature, but you can use a body with a high specific heat coefficient (in clear, something that needs a lot of heat, expressed in Joules or in Watt.hours, to be warmed up by one degree, like the liquid fuel tank in the JSF case).

      However, in that Uplift novel, the starship clearly cannot get a radiator warmer than the star, which is why they need this laser thing. But they can't use a laser either, 'cause first they'd need a heat transfer process, hence a heat sink.

      So the author was, err, not living up to his hard-science credibility pretenses. It would have been better to fit the ship with some pure unobtainium heat shield or force field.

      -- SysKoll
      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

  9. dude, this is a Joint Strike Operation... by Anonymous Coward · · Score: 0

    Friday night, time to spray a bunch of raid on my DURP and get so Fahahahahahaked up!

  10. Cooling via the fuel tank? by dchamp · · Score: 1

    From the article:

    "To dissipate the heat, cooling loops will be employed to take heat from the laser system and transfer it into the aircraft's fuel tank, where it can be burned away."

    I'm no "nuclear genius" but that doesn't sound like the safest proposition to me. I wouldn't want to try dissapating 900kw of heat into my car's gas tank... but, best of luck to you.

    -dc

    1. Re:Cooling via the fuel tank? by Sylver+Dragon · · Score: 2

      I'm no "nuclear genius" but that doesn't sound like the safest proposition to me. I wouldn't want to try dissapating 900kw of heat into my car's gas tank... but, best of luck to you.

      I would imagine that the fuel is stored in a sealed tank, with no oxygen in it. Making it much safer. Sure jet fuel burns like kerosene, but like kerosene, it needs oxygen to burn. So, put it in a sealed environment, with no air, and you can heat it up without risk of combustion.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    2. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      Yea, well the multi-mach jet engine probably heats up the fuel tank quite a bit more than the laser would.

    3. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      Roger tower...

      Err... one more shot and we will self distruct.
      Are you sure you want us to pursue?

    4. Re:Cooling via the fuel tank? by pVoid · · Score: 1

      Probably the idea is to transfer the heat onto some material that can hold a lot of heat ... hence a liquid as opposed to air.

      They might be 'injecting' this heat into the fuel right before it gets sent off to the jet engines, where it burns off right away...

    5. Re:Cooling via the fuel tank? by sunking2 · · Score: 4, Informative

      Actually, the F22 and probably at least some other modern fighters use bellows tanks in it's fel tanks to cool engine oil. Basically you pump hot oil from the engine into the tanks which are surrounded by thousands of gallons of fuel in order to cool it down.

      Along the same lines it is very common for automobiles to have their fuel pumps inside the fuel tank for the same reason. If you live in a hot area there is a pretty good chance that people who run their cars frequently near empty go through more fuel pumps than those who don't.

    6. Re:Cooling via the fuel tank? by xmnemonic · · Score: 2, Informative

      Yes this is true. Modern aircraft carry inert gas supplies or have Onboard Inert Gas Generation Systems (OBIGGS) which fill the empty space in the tank with nitrogen. It's considered an essential feature.

    7. Re:Cooling via the fuel tank? by Sj0 · · Score: 1

      Perhaps they're trying a pogue style catalytic cracking system to increase fuel efficiency?

      hehehe.

      --
      It's been a long time.
    8. Re:Cooling via the fuel tank? by Anthony+Boyd · · Score: 2
      I wouldn't want to try dissapating 900kw of heat into my car's gas tank... but, best of luck to you.
      I would imagine that the fuel is stored in a sealed tank, with no oxygen in it. Making it much safer.

      How much more likely is the craft to explode if it is shot up? Would one shot that penetrates the tank be a decisive victory in battle? I understand that current military aircraft can withstand quite a beating and still make it back to base. Are these gas-tank-heat-sinks a weapon that can be used against the pilot?

    9. Re:Cooling via the fuel tank? by Sj0 · · Score: 0, Troll

      Fucking mod.
      overrated my hairy ass.

      --
      It's been a long time.
    10. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0
      Long-chained hydrocarbons such as jet fuel have a very high heat capacity. It takes a lot of energy to increase its temperature. Hence, it's a very good medium for storage or transport of heat. That's why many coolants consist of low-viscosity oils. The article itself states that the laser is unlikely to heat a full load of fuel more than a couple of degrees. Of course this means that the weapon may not be safe to use if the fuel level is very low, but then, a pilot shouldn't be fighting if he is low on fuel, anyway.


      Fuel tanks used in fighter jets contain bags, which deflate as the fuel is consumed. Hence, the fuel will never come into contact with oxygen before it is actually burned. These bags are self-sealing, so even a tracer hit will most likely fail to ignite the fuel.

    11. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      It's my understanding the that SR-71 (quite old, in relative terms) has a similar cooling system on it's leading edges. Too much heat from the pressure of supersonic speed.

      IIRC, it's even a special fuel to help this process. Either thermal density or thermal transfer ability.

    12. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      Not quite. Gasoline overheating is not a real issue outside of a volcano, a car's gas tank has little to do with sinking heat. Sitting the pump in liquid fuel keeps the fuel within the pump's body below vapor point AND above vapor pressure. It's more about maintaining phase (liquid), than controlling temperature, which doesn't effect the task of transporting and measuring fuel.

    13. Re:Cooling via the fuel tank? by jo_ham · · Score: 1

      Remember that jet aircraft use pretty weak fuel o run. The fuel used in your average turbofan engine would barely produce smoke in a parafin burner, it's not at all inflammable. The same can be said for the fuel used in turbojet engines like those used in the JSF.

      Like diesel fuel, it's only explosive under high pressure and temperature.

    14. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      Actually, I know for a fact on cargo aircraft, the opposite is true. The hot engine oil is pumped through a "radiator" to heat the fuel surrounding it before it enters the boost fuel pump (the first of three). This prevents the fuel (JP-8) from icing and ensures the fuel is homogenous before burning (i.e.-No contaminents to sediment).

    15. Re:Cooling via the fuel tank? by Anonymous Coward · · Score: 0

      overrated my hairy ass

      Yoda? Is that you?

    16. Re:Cooling via the fuel tank? by chamenos · · Score: 1

      as long as the fuel isn't exposed to a direct flame or electrical spark (or something else) and oxygen, it wouldn't ignite.

      in fact crude oil is refined by taking advantage of the different boiling points of the various components of crude oil. if it can be boiled safely on an industrial scale i don't see why they can't use it to absorb some heat from the laser.

      if you tried to dissipitate 900kw of heat into your car's gas tank, the petrol would start boiling and maybe you'll rupture your tank or screw up your car in some other way, but the petrol won't ignite as a direct result of heat being dissipitated into it, at least not by an open flame.

    17. Re:Cooling via the fuel tank? by labrat1123 · · Score: 1

      Actually this has been done for decades on rocket engines. The fuel is passed through cooling loops that run around the exterior surface of the exhaust nozzles. The Space Shuttle main engines still use this technique today.

  11. Very Nice if it works by Sylver+Dragon · · Score: 2

    This could be a hell of a weapon system, if they can get it to work right. Also, I wonder what the time period is for the 100KW to be transfered to the target? If this is a pulsed laser, that'd be great, but if its a continious laser, I wonder how well it'll really work against a manuvering aircraft. Still, 5 miles up and destroying ground based vehilces would be a nice way to do things.

    --
    Necessity is the mother of invention.
    Laziness is the father.
    1. Re:Very Nice if it works by tc · · Score: 4, Informative

      Watts is a measure of power, i.e. energy per unit time. So, to ask how long it takes to deliver 100KW is nonsensical. Did you perhaps mean, how long can this thing fire for continuously, i.e. how much energy can I fire at the target in a burst?

    2. Re:Very Nice if it works by Sylver+Dragon · · Score: 2

      Watts is a measure of power, i.e. energy per unit time.

      Oops, good point, been out of school too long, I'm used to hearing laser power in terms of Joules, which necessates the type of question I asked. Sorry, didn't engage brain fully.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    3. Re:Very Nice if it works by xmnemonic · · Score: 1

      "If this is a pulsed laser, that'd be great, but if its a continious laser, I wonder how well it'll really work against a manuvering [sic] aircraft."

      Laser tracking systems coupled with IR detection have already been developed for use against all types of aircraft. The limiting factors it would seem would be the turn rate of the laser turret and the accuracy of the tracking, both of which would appear not to be a problem judging by current systems (look at missile seekers, IRST, radar antennae in dogfight situations).

    4. Re:Very Nice if it works by Qrlx · · Score: 2

      I'm still wondering how much damage that would do. 100 Kilowatts, isn't that like 67 hairdryers? How much damage can you do with 67 hairdryers? (Mental image from Diamond Age: an army of girls armed with hairdryers marching on the city at the end of the book.)

      Seriuosly, I'm wondering if the laser isn't affected by clouds and stuff, or it can track the target for a while, because I guess I'm not sure what effect this weapon is going to have. I could see it being bad for metal, like a tank, but what will it do to brick or concrete? What does it do when you shine it on someone? Really bad sunburn in like one second? Third degree burns after two?

      Won't the beam be all un-collilmated and shit after passing through six miles of atmospheric effects, or is 100 kW so much that it laughs at minor perturbations?

      At first I was kinda horrified by the prospect of airborne killer lasers, and well I guess I still am. But I'm afraid of a fully-loaded F-18 even without the lasers. Cluster bombs in particular are something I never want to have dropped anywhere near me. Unlike cluster bombs, when the laser turns off, it won't leave behind unexploded little bomblets for the kids to play with.

      And I bet that huge killer lasers are a lot more environmentall friendly than the current nasty chemicals used in conventional weapons.

      Unless they use freon for dissipating that extra 900 KW.

    5. Re:Very Nice if it works by Anonymous Coward · · Score: 0

      Welp, at sea level with the sun directly overhead, the earth absorbs about 130W/sq meter. We'll work with 100W to make the math easy. So, imagine the sun directly overhead with a way of condensing all that energy into a very small beam.

      That'd burn some stuff, wouldn't it?

      Now, this laser is 1000 times that power.

      Even slightly spread out (say, the size of a dinner plate?) it's still an enormously powerful beam.

      5W lasers can burn you instantly in a very thin line. 100 KWatt will cut through almost anything man-made, I would guess.

    6. Re:Very Nice if it works by JoeRobe · · Score: 5, Informative

      I work in a laser lab, were the laser we work with (an Argon Ion) puts out a maximum 15 watts of power (of multiple wavelengths of visible light) in a ~5mm diameter beam.

      At 1/2 watt, it will blind you immediately if your eye passes in front of it.

      At 3 watts, it will burn through a piece of paper.

      At 6 watts, it's burning through my sleeve.

      At 8 watts if I accidentally wave my hand through it, it will cause blisters to form several minutes later.

      At 10 watts, our power meter starts smoking and our mirrors begin to get these ugly burn marks on them.

      At 15 watts, it'll burn through an aluminum can.

      This is for a continuous wave laser (one that doesn't pulse). Now you can imagine what 100,000 watts will do:). The question is, seeing as how this must be firing in pulses, what is the pulse length? Minutes? Seconds? Milliseconds?

      I'm also curious what wavelength it is firing at. I didn't notice it in the article (but I definitely could have missed it). Anyway, I hope that helped answer your question. Maybe some other slashdotters out there have worked with more powerful lasers?

      JoeRobe

      --
      The best way to predict the future is to invent it.
    7. Re:Very Nice if it works by Kashif+Shaikh · · Score: 1

      Watts is a measure of power, i.e. energy per unit time. So, to ask how long it takes to deliver 100KW is nonsensical.Did you perhaps mean, how long can this thing fire for continuously, i.e. how much energy can I fire at the target in a burst?

      Yeah, we play games like Mechwarrior too much:) I mean, if the weapon systems overheat, does the jet propulsion system shutdown? Also what kind of laser is it...PPC or just the boring linear 'zap' style lasers?

    8. Re:Very Nice if it works by Anonymous Coward · · Score: 0

      It is sad that our civilization only advances technologically by destructive means.
      I cry I cry
      I die die
      No care for me.

    9. Re:Very Nice if it works by Phanatic1a · · Score: 2

      How much damage can you do with 67 hairdryers?

      Depends. Take all the energy dissipated by those hairdryers in, say, 1 second, cram it into a pulse lasting, oh, say, a microsecond, and you're dumping a lot of power. That sort of power will happily break things.

      Or, to put it another way: 100 kilowatts, isn't that like 135 horsepower? How much damage can you do with 135 horsepower? Try driving a Ford Festiva into a bridge abutment at 70 miles per hour, and you'll find out.

    10. Re:Very Nice if it works by Phanatic1a · · Score: 2

      And I bet that huge killer lasers are a lot more environmentall friendly than the current nasty chemicals used in conventional weapons.


      Huge killer lasers that use a chemical reaction to pump the beam generate some horrifically nasty chemical byproducts. Take a COIL, a chemical oxygen-iodine laser. You don't want to breathe, ingest, or even look too hard at what's leftover when one of those fires.

    11. Re:Very Nice if it works by foobar104 · · Score: 2

      I cry I cry
      I die die
      No care for me.


      I had a cat named Snowball.
      She died! She died!
      Mom said she was sleeping.
      She lied! She lied!

      -- Lisa Simpson

    12. Re:Very Nice if it works by cheezehead · · Score: 1

      This is for a continuous wave laser (one that doesn't pulse). Now you can imagine what 100,000 watts will do:). The question is, seeing as how this must be firing in pulses, what is the pulse length? Minutes? Seconds? Milliseconds?

      If the thing pulses, it only makes it less effective. Remember, it's 100,000 Watts, or 100,000 Joules per second. The longer the pulse (or continuous), the more energy it delivers. If it were to pulse for a microsecond, it would deliver 100 mJ per pulse, and that's not all that impressive.
      The fact that the dissipation of 900 kW poses some challenges leads me to believe that this thing is operating in (nearly) continuous mode. However, at the end of the day, the energy will have to come from the fuel, so there's a limitation there.

      Far more significant is the diameter of the beam. This determines the amount of Watts per square meter. Lasers tend to have fairly narrow beams at the source, however, they also diverge a bit. At a distance of several kilometers this might be significant. Also, atmospheric diffraction could be a problem (possibly solved by the adaptive optics mentioned in the article).

      But, given all this, I'm still puzzled. Say you could focus these 100kW in a narrow beam of for example 1 millimeter. This could probably burn a hole through a tank or an airplane. But what's the point of burning a 1 mm hole in a tank or plane? How much damage does that do?
      Alternatively, say the beam has a diameter of 1 meter. A one meter hole would probably do significant damage, especially to an airplane. However, that would amount to ~130kW per square meter, which is around 1000 times the intensity of the sun. That's about the same as using a (big) magnifying glass in sunny weather. How long would it take to burn a hole through anything? Especially tanks with their several feet of steel armor would survive this for quite some time, I would think.

      Of course, it could be an anti-personnel weapon, but I have doubts on how effective this would be. What's the point of using an F-35 to pick off infantry troups one by one?

      I guess I must be missing something here.

      --

      MSN 8: Now Microsoft even has bugs in their ad campaigns.

    13. Re:Very Nice if it works by belroth · · Score: 2
      If the thing pulses, it only makes it less effective. Remember, it's 100,000 Watts, or 100,000 Joules per second. The longer the pulse (or continuous), the more energy it delivers. If it were to pulse for a microsecond, it would deliver 100 mJ per pulse, and that's not all that impressive
      NO.
      You can have 100kW by delivering 100kJ in 1 sec or 200kJ in 0.5 sec, or 1000kJ in 0.1 sec, it's all 100kW.
      You're normally trying to put the same energy into a shorter time, which increases the power.
      --
      I hereby inform you that I have NOT been required to provide any decryption keys.
    14. Re:Very Nice if it works by belroth · · Score: 2
      Not enough sleep, that's my excuse.
      I meant to say
      100kW = 100kJ/1s = 50kJ/0.5 s = 10kJ/0.1s

      200kJ/0.5s = 400kW and 1000kJ/0.1s = 10000kW
      sorry.

      --
      I hereby inform you that I have NOT been required to provide any decryption keys.
    15. Re:Very Nice if it works by sphealey · · Score: 2
      If the thing pulses, it only makes it less effective.
      Actually, that turns out not to be the case. Think about the amount of energy that a hammer delivers to a nail - not very much, really. If you put your palm on the nailhead and push slowly and steadily for 1/2 hour you will have converted a lot more energy to heat, but not accomplished anything w.r.t. getting the nail into the wood. Give the hammer a short, sharp swing and you will do a lot more damage with less energy expended.

      Also, there are the issues of burning though any surface coating (aluminum oxide is an excellent mirror to most laser frequencies) and burning through the cloud of vapor from previous shots.

      sPh

    16. Re:Very Nice if it works by Citizen+of+Earth · · Score: 2

      At 6 watts, it's burning through my sleeve.

      At 8 watts if I accidentally wave my hand through it, it will cause blisters to form several minutes later.


      Sounds like somebody didn't read his Laboratory Safety manual.

    17. Re:Very Nice if it works by CTho9305 · · Score: 1

      No, watts are a measurement of rate. 1000kJ in .1 second would be 1000kj / .1 seconds = 10,000kW. It doesn't matter how long the pulse is, only the joules per time. 100kW in .1 seconds = 100kJ/sec * .1 sec = 10kJ of energy absorbed by the target.

    18. Re:Very Nice if it works by JoeRobe · · Score: 1

      "Sounds like somebody didn't read his Laboratory Safety manual."

      Haha yeah I know...I'm sitting there working on the laser, and I smell an odor of burning plastic - my sweatshirt sleeve was hanging in the beam. The frustrating thing about waving your hand through the beam at >6W is that you dont even realize you did it until all of the sudden you have a blister. It happened to me once and now I'm really careful about it.

      We do wear cool-looking safety glasses, though:)

      --
      The best way to predict the future is to invent it.
    19. Re:Very Nice if it works by belroth · · Score: 2
      Um, if watts are a measurement of rate how can it possibly not matter how long the pulse is?

      compare and contrast

      It doesn't matter how long the pulse is,
      and
      only the joules per time.

      A watt is one Joule per second. If I can put one joule in a one second pulse then I hava a one watt device, if I can put the joule into a half second pulse I have a two watt device.

      --
      I hereby inform you that I have NOT been required to provide any decryption keys.
    20. Re:Very Nice if it works by JoeRobe · · Score: 1

      I agree with you - the watts/m^2 are the important thing, not just watts. I figured 5mm was a fairly common beam size. The beam spread is a problem, it'll be interesting how they find a way to overcome it. The unit mm*mrad takes both of those factors into account (mm = beam size, mrad = beam divergence)

      I really don't know what you could use it for. I mean, it could be useful in air dogfights, but it'd be really stupid, seeing as how if you miss your target, there's now this beam going for tens of miles that could easily lop an arm off of a civilian.

      I've looked up some stats on beam power needed to cut through metal. CW solid state lasers that output 4kW easily cut through 1/2" slabs of metal. So this'll be 25 times that (assuming the same beam diameter.) Could be pretty powerful. I still don't know about cutting through tanks.

      --
      The best way to predict the future is to invent it.
    21. Re:Very Nice if it works by Izmunuti · · Score: 1

      "But what's the point of burning a 1 mm hole in a tank or plane? How much damage does that do?"

      Well, it may depend on how accurate the laser is. Where the damage is might make all the difference. How about a 1mm hole through the skull of the pilot?

    22. Re:Very Nice if it works by cheezehead · · Score: 1

      I guess I did not make myself clear, judging by the number of posters trying to educate me on the relationship between energy, power, and time :-)

      Yes, given a certain amount of energy, a pulsed laser is far more effective than a continuous one.
      An energy of 1 Joule in a nanosecond gives you a GigaWatt laser. The same energy in a millisecond only gives you a kiloWatt laser.

      However, note that the article mentions that the power of the laser is 100 kW. It does not mention a fixed amount of energy.

      Let me put it another way. Suppose we have two different lasers. Laser A has a power of 100kW, and delivers a 1 millisecond pulse, every second. Laser B also has 100kW of power, but delivers 1000 pulses of 1 millisecond, every second (so it's effectively a continuous laser). Which one is more effective? Laser A delivers 100J of energy every second. Laser B delivers 100,000J every second. (If you are going to argue now that laser A is a 100W laser, then I'm afraid I have confused you...).

      Again, the fact that they need to dissipate 900kW, and use the fuel as a heat sink, leads me to believe that this is a (nearly) continuous laser. If it were using, say, a 1 millisecond pulse, they would need to dissipate 900J per pulse, which is not all that impressive.

      --

      MSN 8: Now Microsoft even has bugs in their ad campaigns.

    23. Re:Very Nice if it works by PierceLabs · · Score: 1

      Try a missle housing. In this day and age, this becomes the ultimate precision weapon. Target a warhead (potentially one in flight for you) and simply lase it out of the sky. If this works I can't wait to see a mobile HELSTAF facility built to knock out large numbers of theater missles.

      Missles hitting missles is still a crap shoot, but a laser pulsing missles and burning their warhead cores out is a very practical option for theater missle defense.

    24. Re:Very Nice if it works by Lord_Byron · · Score: 1

      The 20mm projectiles the aircraft's cannon fires at a very high rate also remain lethal for some distance. Also, where a laser will only hit the Earth if it's fired in that direction, with projectiles, what goes up will come down.

    25. Re:Very Nice if it works by Anonymous Coward · · Score: 0

      the difference here is that the laser beam is like a continuous beam (read: absurdly high rate) of projectiles that, if fired towards the ground, would have the potential of killing hundreds of people (if it hit the right place). imagine "scanning" the laser across the ground for a few seconds...that'll do a lot more damage than a rapid fire projectile weapon will to a crowd of people.

    26. Re:Very Nice if it works by Shimbo · · Score: 1

      I work in a laser lab, were the laser we work with (an Argon Ion) puts out a maximum 15 watts of power (of multiple wavelengths of visible light) in a ~5mm diameter beam.

      Now you can imagine what 100,000 watts will do:)

      No , but I've see what 1 000 000 000 000 000 Watts can do.

  12. Time to buy some really good sunglasses by Zrech · · Score: 2, Insightful

    I guess they forgot about the "splash" dammage effet of a "laser". If this device were to hit any sort of reflective material, the potential to permenently blind large ammounts of people is great.

    1. Re:Time to buy some really good sunglasses by Sylver+Dragon · · Score: 2

      guess they forgot about the "splash" dammage effet of a "laser". If this device were to hit any sort of reflective material, the potential to permenently blind large ammounts of people is great.

      Hey, even better. Not only do you take the tank out, you blind the infantry that is near it!

      --
      Necessity is the mother of invention.
      Laziness is the father.
    2. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      You must be that infantry...

    3. Re:Time to buy some really good sunglasses by afidel · · Score: 3, Informative

      intentionally blinding people with lasers is against the Geneva convention.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    4. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      It doesn't matter, because this is a weapon. If it kills/hurts the evil friends of the evil people you are targetting, who cares ?

      They should rather use a plasma gun, it consumes a lot more energy, but the visual effect is nicer by night ;)

    5. Re:Time to buy some really good sunglasses by spoonist · · Score: 0, Flamebait
      ... the potential to permenently blind large ammounts of people is great.

      Hey dude, it's a WEAPON. That means it's SUPPOSED to cause damage... so blinding some enemy troops isn't such a bad thing.

    6. Re:Time to buy some really good sunglasses by Sylver+Dragon · · Score: 2

      intentionally blinding people with lasers is against the Geneva convention.

      So is torture, and of course, we haven't seen that in war since the Geneva convention.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    7. Re:Time to buy some really good sunglasses by Sylver+Dragon · · Score: 3, Funny

      Hey dude, it's a WEAPON. That means it's SUPPOSED to cause damage... so blinding some enemy troops isn't such a bad thing.

      Shh, don't burst his reality. He's probably also one of those people that want to outlaw weapons in war because they are too effective at killing people. Let him go about his dreams of Nerf warfare.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    8. Re:Time to buy some really good sunglasses by GigsVT · · Score: 1

      If this device were to hit any sort of reflective material, the potential to permenently blind large ammounts of people is great.

      Probably not. Assume the surface is 95% reflective, that means it is absorbing 15% of the energy. 5kw in a tight beam would still blast a hole almost instantaneously, probably fast enough to not reflect much energy.

      Of course, I know nothing about this area of science, so I may be wrong, but this seems reasonable.

      --
      I've had enough abrasive sigs. Kittens are cute and fuzzy.
    9. Re:Time to buy some really good sunglasses by GigsVT · · Score: 1

      . Assume the surface is 95% reflective, that means it is absorbing 15% of the energy

      Uhhh, yeah... Note to self, smoke less crack. You get what I meant hopefully.

      --
      I've had enough abrasive sigs. Kittens are cute and fuzzy.
    10. Re:Time to buy some really good sunglasses by Waffle+Iron · · Score: 5, Funny
      intentionally blinding people with lasers is against the Geneva convention.

      I can see it now:

      GI: Sarge! There's a dozen or more enemy troops on the other side of that ridge! I'm going to call for air support: They'll blind those bastards with a laser! We can go in and round 'em up.

      Sarge: No can do, soldier. That's against the Geneva convention. You tell your flyboy buddy to drop a Daisy Cutter on those a-holes. I'm afraid the only humane way to handle this situation is to incinerate those poor bastards to a crispy crunch.

      GI:Yes, Sir!

    11. Re:Time to buy some really good sunglasses by coding_ape · · Score: 1
      Yes, but only if the laser is specifically designed to blind people. Here is the Protocol on Blinding Laser Weapons.

      As long as it is meant to blow things up it is perfectly legal, even if it does fry some eyeballs in the process.

    12. Re:Time to buy some really good sunglasses by brokenbeaker · · Score: 2, Informative

      It turns out that weapons whose main function is to blind people are banned by the Geneva convention.

      This link
      http://www.eurekalert.org/pub_releases/2002- 07/ns- flm072402.php

      actually discusses the weapon to be mounted on the f35.

      The article also states 2015 as likely date for entry into service.

    13. Re:Time to buy some really good sunglasses by e2d2 · · Score: 3, Funny

      Chrome tanks, chrome fatigues, and mirror Cochese shades?

      SWEEET!

    14. Re:Time to buy some really good sunglasses by shaunbaker · · Score: 1

      exactly, it is banned, but you missed the key point, "intentionally". Splash damage is not intentional, just as the M1A2 tank uses a high powered laser range finder that will blind you, it is permited because its main function is not to blind people.

    15. Re:Time to buy some really good sunglasses by .milfox · · Score: 1

      Yup. That's why those .mil issue goggles have a nice tinted lens as well. :P

      And that's really the reason why all the cav guys always wear the tinted ones. Or Gargoyles. Or both. :P

    16. Re:Time to buy some really good sunglasses by Rob+Simpson · · Score: 1

      You're an idiot. What about your own troops? Or the pilot, for that matter...

    17. Re:Time to buy some really good sunglasses by esper_child · · Score: 1

      who ever said intentionally blinding people was the use of the weapon, it is just a side effect. Go back and reread that articles. Also, it doesn't make a case about what happens if it is 'accidental' so splash damage is a moot point.

    18. Re:Time to buy some really good sunglasses by esper_child · · Score: 1

      If blinding is a side-effect as opposed to the goal of the weapon, then by all means you are allowed to use it. Blind people with lasers isn't against geneva convention so long as the weapons primary designed usage is to anything else.

    19. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      Nope, the U.S. is signatory to a treaty that does not allow the use of laser blinding weapons. This laser probably works in the an area of the spectrum that is not affected by the human eye.

    20. Re:Time to buy some really good sunglasses by esper_child · · Score: 1

      well the pilot would be stupid not to have eyeprotection (The russians have in the past tried to blind our pilots with lasers anyways so that should be a good excuse to have teh eye protection). And the ground troops, uhm you would first have to get teh beam to them, and at that point blinnding might be the least of their problems.

    21. Re:Time to buy some really good sunglasses by esper_child · · Score: 1

      actually he is correct, this is how this would work. You better have REALLY clean mirrors or you will have problems on your hands, sure it will refelct MOST but that might not be enough to save yourself.

      On a side not I have seen lasers in this range used for research and they are quite amusing to mess with. Just make sure your reflective surface doesn't have any contamination on it or you will have severe problems with it.

    22. Re:Time to buy some really good sunglasses by jafuser · · Score: 2

      With that kinda wattage, I'd image the reflective damage would do more damage than just blinding. You'll probably wind up with a quite crispy coating if you're in the path of any reflected shimmers =)

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    23. Re:Time to buy some really good sunglasses by jafuser · · Score: 2
      Very interesting point. What's to keep an enemy from using a reflective material, not much unlike that used in traffic signs, which somehow reflects *most* of the light directly back at the same angle it's coming from?

      How do these signs work anyway? I discovered this once when I was playing with a laser pointer and a stop sign in front of my house. It looked really bright from my perspective if I was the one aiming the pointer, but if someone else did it from another angle, it didn't look much different from shining it on a plain wall.

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      Please consider making an automatic monthly recurring donation to the EFF
    24. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      Even if you blind them en route to killing them?

    25. Re:Time to buy some really good sunglasses by foobar104 · · Score: 3, Insightful

      At these levels of power, the reflective material would have to reflect virtually all light in order to be safe. And when I say "virtually all," I mean on the order of 99.999%. I believe a 12 watt laser can cut through sheet aluminum pretty handily, and aluminum is both somewhat reflective and highly heat-conductive. A kilowatt-scale laser should be able to cut through just about anything, shiny or otherwise.

    26. Re:Time to buy some really good sunglasses by foobar104 · · Score: 2

      Nope, the treaty you mentioned is the Geneva Convention, and it bans weapons whose sole purpose is to blind. Just about any laser ranging or designation device can blind if used (or misused) in just the right way; none of these devices is regulated by the Geneva Convention.

      The purpose of this laser weapon is to destroy stuff, not to blind people. So it's A-OK, too.

    27. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      you do realize that most soldiers in the world are conscripted, and don't really have a choice NOT to fight, do you? as such, i don't believe they can be held fully responsible for their actions. that is why soldiers who have committed war crimes under orders from superiors don't get punished. rather, those superiors that gave the orders get the rap.

      so stop playing so much video games whereby the bad guys are all brainwashed billies bent on your destruction, ok?

    28. Re:Time to buy some really good sunglasses by cameldrv · · Score: 1

      The sign probably has vertical V-shaped grooves in it at 90 degree angles to reflect light back to the source if it is at roughly the same height. The manufacturing and reflectivity isn't perfect, so you still see it from other angles.

    29. Re:Time to buy some really good sunglasses by Bubblesculpter · · Score: 1



      I believe the signs work by the light reflecting off tiny spheres.

      The spheres are contained in the mixture which is 'painted' onto the sign, or in the mixture which the reflective tape is made out of.

      When the light hits the sphere, there will always be a surface perpendicular to the source of the light, resulting in it reflecting back. Of course, some of it will reflect in other directions, but would scatter.

      Then again, I may be totally wrong, but I believe I've read about that somewhere...

      --
      www.Beyond7.com Insane modern art water sculpture.
    30. Re:Time to buy some really good sunglasses by Isle · · Score: 1

      that is why soldiers who have committed war crimes under orders from superiors don't get punished.

      Actually they do, this argument came up many times during the Nurenberg processes, and was turned down everytime. It is every person own responsibility to obey the law and international trities. That you are acting under order is never an excuse, even if they are threating your life; in that case it is your duty to rebel.

      (Try imaging the same case under common law, someone threatens to kill you if you dont kill someone else. If you did it, you would still be convicted, the one threating you would be guilty of conspiracy to murder and threats on your life, but not the murder.)

    31. Re:Time to buy some really good sunglasses by Anonymous Coward · · Score: 0

      Yeah, it may seem weird, but killing people is more acceptable than intentionally crippling them. After all, if we could just blind all our enemies instead of killing them in wartime, imagine the strain it would put on the defeated nation, to have 100,000 blind people to care for instead of 100,000 bodies to bury.

    32. Re:Time to buy some really good sunglasses by DirtMcGirt · · Score: 1

      Actually, weapons like this, for which blinding is likely a very common side effect, are specifically exempted by the geneva convention. See this article in new scientist. They say the reflections could blind people many miles away.

    33. Re:Time to buy some really good sunglasses by Lord_Byron · · Score: 1

      Which is why the 5.56 is designed to wound more often than kill. Not that it isn't still plenty deadly.

  13. Re:First Real Genius Post! by Gregg+M · · Score: 2

    Can you hammer a six inch spike through a board with your penis?

    Damn ..... wrong joke.

    --
    Linux is only free if your time has no value. Windows is only free if you threaten to use Linux.
  14. Dissipating the heat into the fuel... by richard-parker · · Score: 3, Interesting

    To dissipate the heat, cooling loops will be employed to take heat from the laser system and transfer it into the aircraft's fuel tank, where it can be burned away.

    ...
    "If you think about the amount of fuel onboard a jet aircraft, if you put all that heat in the fuel, you might raise it by a degree, something on that order," he said.
    Unless, of course, the aircraft has expended 99% of its fuel - in which case the temperature of the remaining 1% of the fuel would raise by 100 degrees. Ouch.
    1. Re:Dissipating the heat into the fuel... by sunking2 · · Score: 2

      In which case you're gonna crash because you've run out of fuel anyway. It is few and far between that an aircraft returns to base with under 15% fuel, let alone enter combat with so little.

    2. Re:Dissipating the heat into the fuel... by Anthony+Boyd · · Score: 2
      It is few and far between that an aircraft returns to base with under 15% fuel, let alone enter combat with so little.

      Umm. Isn't combat one of the very few places where you cannot predict the outcome of any engagement with any degree of reliability?

    3. Re:Dissipating the heat into the fuel... by GigsVT · · Score: 1

      Then just have a safety interlock where the laser can't fire if the fuel isn't enough to cool it. If they can scrounge together nearly a megawatt of energy on a fighter jet and design a laser that is over 10% efficient, then I'm sure they thought of that too. This whole discussion seems to be falling prey to Slashdot Naysayer Syndrome (SNS).

      --
      I've had enough abrasive sigs. Kittens are cute and fuzzy.
    4. Re:Dissipating the heat into the fuel... by brooks_talley · · Score: 2

      I'd expect a god-only-knows-how-expensive plane like the JSF will probably include a fuel gauge, and the pilots will probably get some sort of training about when to use/not use the laser.

      Cheers
      -b

    5. Re:Dissipating the heat into the fuel... by (H)elix1 · · Score: 2

      Then just have a safety interlock where the laser can't fire if the fuel isn't enough to cool it.

      Great... visions of a trek flick... sorry captain, the plasma conduits are shot. We can't route anymore power to the weapon systems without loosing life support.

      Better safe than a small crater that use to be a mecha with one too many heavy lasers.

    6. Re:Dissipating the heat into the fuel... by SEWilco · · Score: 1
      Then just have a safety interlock where the laser can't fire if the fuel isn't enough to cool it.

      "That craft on my tail is going to blast me if I don't zap it... LASER SAFETY OVERRIDE, FIRE, EJECT..."

    7. Re:Dissipating the heat into the fuel... by foobar104 · · Score: 2

      "That craft on my tail is going to blast me if I don't zap it... LASER SAFETY OVERRIDE, FIRE, EJECT..."

      Um... you do realize that you can accomplish the same ends just by pulling the bright yellow handle between your legs, right?

    8. Re:Dissipating the heat into the fuel... by zmooc · · Score: 1

      Indeed. But there's one thing I can predict; use of laser-guns will typically be when the tanks are more than half-full; there has to be enough fuel left to get back to the base and fighting will usually not be near the base. Or at least to get back to a safe zone where tank-planes can come. For all exceptions there are still conventional guns.

      --
      0x or or snor perron?!
    9. Re:Dissipating the heat into the fuel... by SEWilco · · Score: 1
      "That craft on my tail is going to blast me if I don't zap it... LASER SAFETY OVERRIDE, FIRE, EJECT..."

      Um... you do realize that you can accomplish the same ends just by pulling the bright yellow handle between your legs, right?

      Ejection alone won't destroy the enemy. Firing at it might do so.
      I also realize the JSF probably will use only the between-the-legs ejection handle without the face-curtain trigger, the laser firing control might not be labeled, and the override might be related to a status display and not a separate button.

    10. Re:Dissipating the heat into the fuel... by foobar104 · · Score: 2

      One aircraft, with pilot, is worth considerably more than one tango. Pilots in the US armed forces are trained to bring themselves and their aircraft home intact, even if it means breaking off an engagement to do so. He who fights and runs away, lives to fight another... and so on.

    11. Re:Dissipating the heat into the fuel... by smithmc · · Score: 1

      Umm. Isn't combat one of the very few places where you cannot predict the outcome of any engagement with any degree of reliability?

      Umm, this thing is being mounter on the Joint Strike Fighter, no? Obviously this Kill-O-Zap Mega-Hurtz gun is meant to be used on strike missions, not during dogfights.

      --
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    12. Re:Dissipating the heat into the fuel... by smithmc · · Score: 1

      If they can scrounge together nearly a megawatt of energy on a fighter jet

      1E6 watts / (746 watts/hp) = 1340.5 hp, no big deal. That's about two Ferrari Enzos' worth.

      --
      Downmodding is the refuge of the weak. Don't downmod, make a better argument!
    13. Re:Dissipating the heat into the fuel... by GigsVT · · Score: 1

      Yeah, that is true, but they are converting it to electricity, which means they are going to be working with high voltages at (relatively) high amperages. It's no small feat, a short or failure could blow a big chunk out of the plane.

      For reference, a portable 1MW generation unit is usually mounted permanantly in a tractor-trailer trailer section.. of course that is designed to provide a continuous 1MW, whereas they probably only have to provide bursts.

      Anyway, my point was "I'm sure they thought of that", to all the naysayers about the fuel heat dissipation system.

      --
      I've had enough abrasive sigs. Kittens are cute and fuzzy.
    14. Re:Dissipating the heat into the fuel... by SEWilco · · Score: 1

      Well, when you're going to lose your aircraft anyway and your only rearward weapon is your laser that will blow up your plane....

    15. Re:Dissipating the heat into the fuel... by Anonymous Coward · · Score: 0
      Well, when your father showed up in your bedroom on your 12th birthday and your only rearward weapon was a rather pathetic little half-squirt....[YOU WERE BOUND TO GET FUCKED UP THE ASS AND TAKE THE ROAD IN LIFE MARKED "Faggoty-Ass Loser"]. Now, I will review what you have written. It appears you are a raghead. You assume defeat rather than suggesting that escape is always an option. Real men (i.e. white men) know that in a dogfight, the fight isn't lost until you're a burning corpse. I shudder to think that Arabs like yourself have infiltrated our precious society and decided to spread your Communist ideals. Linux is not cool. Get that into your goddamned head.

      Patrick from the Screen Savers claims to have had sex with you. Worse than that, he said he was the pitcher. Even in bed with bitches, you are the ultimate bitch.

      (If any of you fags with mod points think this is either off-topic or flame-bait, then you are ball-sucking fags and you can suck Richard M. Nixon's bloated ball/penis. In other news, I banged your mom.

      Love Always,
      Capt. Giant Dick

    16. Re:Dissipating the heat into the fuel... by agedman · · Score: 1
      Unless, of course, the aircraft has expended 99% of its fuel - in which case the temperature of the remaining 1% of the fuel would raise by 100 degrees.
      If the aircraft has expended 99% of its fuel, it'd better be taxiing at a friendly airbase. It probably wouldn't be flashing its lasers at that point!

      Well, unless of course the jerk ahead of him is taking a little too long at the pump.

  15. can't fire on an empty tank by eyeN · · Score: 1

    i noticed two problems with the cooling strategy:

    1) Tom Burris sites the enormous fuel capacity of the fighter as the coolant for the laser, but they are utilizing an area "used largely for fuel storage in the other variants" to house the laser system, so they are reducing the amount of fuel that can be used to dissipate the heat.

    2) you couldn't fire the weapon on a low or empty tank without overheating.

    - ian ward

    1. Re:can't fire on an empty tank by Anonymous Coward · · Score: 0

      Fighters would rarely have to fire on the way back or just before landing, and even then you don't land on an empty tank if your mission has gone according to plan. So in something like 95% plus situations our forces would use this thing, it would probably have half full tanks or better.

      Still I would feel safer with water cooling. Rig up a jet that purges the superheated steam for additonal thrust. In an emergancy, a spare, short use rocket/jet engine.

    2. Re:can't fire on an empty tank by .milfox · · Score: 1

      No, they're using an area used for A LIFT ENGINE in the marine corps VSTOL variant. :P

      So in the AF and Navy variants the space for that additional engine will be empty. Or at least under-used.

    3. Re:can't fire on an empty tank by Anonymous Coward · · Score: 0

      Wasn't that space going to be used for fuel tanks in the AF and Navy variants? That would make the statement "they are utilizing an area "used largely for fuel storage in the other variants" to house the laser system" correct, wouldn't it?

    4. Re:can't fire on an empty tank by foobar104 · · Score: 2

      You seem to be forgetting that water is heavy.

  16. Heat by bytesmythe · · Score: 5, Funny
    Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat

    They can use whatever heatsink comes out for those 4 Ghz Pentiums...

    --
    bytesmythe
    Hypocrisy is the resin that holds the plywood of society together.
    -- Scott Meyer
    1. Re:Heat by Ooblek · · Score: 2

      No way...too simple. All the fighter pilots should just ask Lockheed to install auto-warming cupholders now. It will help drowsey pilots on those long flights around hostile airspace.

    2. Re:Heat by Anonymous Coward · · Score: 0

      Only you'd have to fire the laser to keep your coffee hot.

      Pilot: "Damn; this coffee's cold! Let's warm it! Hey, what's that? Civilians? Hell; it's my coffee or them. Who ever said war was easy?"

    3. Re:Heat by inteller · · Score: 0

      Yeah heat sinks....that's what we use in Mechwarrior anyways....

    4. Re:Heat by Anonymous Coward · · Score: 0

      uh, no... everyone knows heat RISES.

    5. Re:Heat by krogoth · · Score: 2

      Actually, that wouldn't be a bad idea. A high-end PC HSF might have 2 fans - imagine the air cooling you could get at Mach 2!

      --

      They that quote Benjamin Franklin on liberty and safety deserve neither.
  17. Put the heat to use... by blackbeaktux · · Score: 1

    The next-gen JSF would feature a mini-oven and a jacuzzi for the pilot and co-pilot.

    1. Re:Put the heat to use... by Anonymous Coward · · Score: 0

      The next-gen JSF will not have a pilot.

    2. Re:Put the heat to use... by Eagle7 · · Score: 3, Funny

      The next-gen JSF would feature a mini-oven and a jacuzzi for the pilot and co-pilot.

      Right... I can see it now:

      Pilot: I need to use the laser Slider... time to fire up the oven.

      Copilot: Shit Maverick, this is the 15th batch of hot pockets I've had to eat this flight - can't you use a fucking missile or something?

      --
      _sig_ is away
    3. Re:Put the heat to use... by Anonymous Coward · · Score: 0

      The other way 'round, rather:

      Copilot: "Find us a target, I want a pizza."

  18. New business plan? by Anonymous Coward · · Score: 0

    1. Make 100-kW laser.
    2. ???
    3. Profit!!!

  19. Great... by Anonymous Coward · · Score: 0

    When do we get the models that fits on sharks?

  20. hmmm... another approach? by llamalicious · · Score: 2

    As powerful as a 900Kw laser is, should they mayhap try focusing on making it produce less heat, rather than attempting to simply funnel it away?

    I'm sure they already investigated it, but I'd be looking to more applied material sciences to come up with a cooler-by-design laser, rather than cooler-by-dissipation. Less of a power drain that way too.

    1. Re:hmmm... another approach? by Flamerule · · Score: 3, Interesting
      From the article:
      Lockheed Martin believes that a 100-kilowatt laser is the minimum power level needed to be an effective weapon for a fighter.

      However, "to get 100 kilowatts of light out, you've got to put a megawatt of electrical power in, so somewhere along the way you've got to deal with 900 kilowatts of cooling," Tom Burris, lead for directed energy at Lockheed Martin Aeronautics, told The DAILY. "That's a ton, for a fighter that normally does tens of kilowatts of cooling."

      It's a 100KW laser; that requires 1MW of energy. The energy that didn't go into the laser is lost as waste heat, hence 900KW of heat need to be dissipated. The only way to reduce the amount of heat would be increasing the laser's efficiency, and as other posters have already pointed out, 10% is excellent efficiency for this kind of system.
    2. Re:hmmm... another approach? by Isle · · Score: 1

      I think they have tried as much as they can. Laser technology is certainly going to improve but right now this is state of the art.

      Perhaps they instead could look at using the heat for something else. (can heat be effectivly turned into propulsion in a jet-fighter, or used as a weapon in itself)

  21. Not on the plane... by SaturnTim · · Score: 4, Funny


    I didn't want it on the aircraft,
    I wanted them mounted on the sharks!

    All I want are sharks with freakin laser beams on their head!

    --Dr. Evil.

    --
    http://www.theMediaBunker.com
    1. Re:Not on the plane... by Anonymous Coward · · Score: 0

      Now we know why they have to swim around in water. Gotta keep their heads cool

    2. Re:Not on the plane... by inburito · · Score: 1

      Getting a little outdated since Scott already got him the sharks with freaking laser beams in the new movie(not really that good a movie)..

    3. Re:Not on the plane... by Anonymous Coward · · Score: 0

      Sorry, all we could get are sea bass.

    4. Re:Not on the plane... by macdaddy357 · · Score: 2

      A giant "laserbeam." It shall be known as the Alan Parsons Project!

      --
      How ya like dat?
  22. It's about time. by antisocial77 · · Score: 1

    It's 2002 people. If we don't get laser weaponry and gauss rifles soon, all of my hopes for the future will be crushed.

  23. I wonder.... by nizo · · Score: 5, Funny

    if they are gonna put a huge warning sticker on the front of the figher: "Do not stare directly into laser"?

    1. Re:I wonder.... by xmnemonic · · Score: 1

      Aircraft with FLIR pods already have high-energy laser warnings.

    2. Re:I wonder.... by Floyd+Turbo · · Score: 2

      ". . . with remaining eye."

    3. Re:I wonder.... by xmnemonic · · Score: 1

      Er, rather, aircraft with integrated IR-laser pods as well as attachable FLIR pods have laser warnings painted on them.

    4. Re:I wonder.... by RobL3 · · Score: 2

      In a lab I used to work in there was a sign posted that read "Do Not Look Into Laser With Remaining Eye". Pretty funny stuff.

    5. Re:I wonder.... by Dr.+Awktagon · · Score: 3, Funny

      No, but there'll definitely be a sign on the firing end with the words "THIS SIDE TOWARD ENEMY".

    6. Re:I wonder.... by Stonent1 · · Score: 2, Funny

      Oh you mean like this: Do not rotate?

    7. Re:I wonder.... by jasontheking · · Score: 1

      that's nice. how am I supposed to read the warning from that far up?

      sounds like someone was a bit slack in testing.

  24. Talk about... by pVoid · · Score: 1

    a laser you should directly look into.

    hah.

  25. where do you get the power from? by Anonymous Coward · · Score: 1, Interesting
    How in the world do you get a megawatt of available power in an aircraft? Charge banks of capacitors?



    Can anyone here shed some light on such a compact yet powerfull system?

    1. Re:where do you get the power from? by Anonymous Coward · · Score: 0

      You attach a generator/alternator/etc. to the output shaft of a conveniently-located turbine engine, e.g. the one providing thrust for the rest of the airplane.

    2. Re:where do you get the power from? by Anonymous Coward · · Score: 0

      And how much power does this convenient turbine provide?

      Hint: Not enough. Especially when you consider how much power this turbine's main function requires.

    3. Re:where do you get the power from? by Anonymous Coward · · Score: 0

      900kw is about 1200hp .... only three or four car engines worth of power output. This is not a big deal.

    4. Re:where do you get the power from? by Anonymous Coward · · Score: 0

      Hogwash.

      900 kW ~= 1200 hp. You've probably got a megawatt sitting in your driveway right now.

    5. Re:where do you get the power from? by El+Puerco+Loco · · Score: 2

      1 Megawatt is a less impressive amount of power than it sounds. It's only about 1340 horsepower. The engines of the F-22 can generate about 30 MW of power standing still, and much more than that at supersonic speeds.

    6. Re:where do you get the power from? by El+Puerco+Loco · · Score: 2

      One other point, if this system uses COIL (chemical oxygen-iodine laser), the laser beam is produced by chemical exitation, not electrical like in a HeNe laser. So the megawatt of energy comes from the laser medium itself, and not any external source of electricity.

  26. what is the problem? by Anonymous Coward · · Score: 0

    Race cars are rated about 700 hp. If they produce 700 hp, then they would be dessipiting about 1400 kW heat (assuming 25% efficiency). So if a tiny car can dessipitate 1400kw, why can't a fighter plane cannot do 900 kw?

    1. Re:what is the problem? by letxa2000 · · Score: 1
      I think the problem is they want to do it without leaving any kind of targetable heat signature.

  27. Sucks to be you. by RatBastard · · Score: 0, Offtopic

    Looks like someone skunked you, pal.

    --
    Boobies never hurt anyone. - Sherry Glaser.
  28. Heat Dissipation Experts by GlassHeart · · Score: 1

    In other news, The Department of Defense awarded a billion dollar contract to Intel Corporation to work on dissipating the tremendous heat generated by the lasers. "No big deal", said an unnamed engineer close to the Pentium IV project, "it's just a matter of using a bigger fan."

    1. Re:Heat Dissipation Experts by Anonymous Coward · · Score: 0

      After all the laser is more efficient than our newest processors from Intel....

    2. Re:Heat Dissipation Experts by user32.ExitWindowsEx · · Score: 1

      I thought AMD would be more suited to heat dissipation.

      --
      "Evil will always triumph because good is dumb." -- Dark Helmet
  29. Can somebody give me an idea... by Anonvmous+Coward · · Score: 2

    ... of how hot this laser could get? I'm sorry, I'm not the guy you can throw kilowatts at and know exactly how powerful (or not so powerful) a laser like that is.

    Don't get me wrong, it sounds cool, but I've yet to hear of a vehicle mounted laser that could do much damage other than filling people's houses with popcorn.

    1. Re:Can somebody give me an idea... by xmnemonic · · Score: 1

      Well, obviously, if you haven't heard of it, there's no way it could possibly exist.

    2. Re:Can somebody give me an idea... by Zrech · · Score: 1

      Well that was a worthwhile post, really informative and to the point!!

      If anyone does know please post, this is probably a point of interest for many people.

    3. Re:Can somebody give me an idea... by Anonymous Coward · · Score: 0

      Maybe the voices from the radio receiver in his mouth could tell him more...

    4. Re:Can somebody give me an idea... by Fiveeight · · Score: 1

      I'm not really sure about this particular type, but my "Space Warfare and Strategic Defense" says

      "The early lasers produced several thousand watts of power and had a power density on the order of 10,000 watts per 1/3rd of a square inch. Hard to believe as it is, this power density is greater than the intensity of light at the surface of the sun."
      So a 100KW version should be pretty effective, at least up high where there isn't much smoke, dust or water vapour

      I doubt this thing would kill vehicles very effectively, especially tanks (laminate armour a foot thick takes a lot of piercing), but planes and missiles are pretty flimsy and full of fuel, electronics and high explosives.

      MIRACL (2.2MW) VS a Titan missile body

    5. Re:Can somebody give me an idea... by Kris+Warkentin · · Score: 3, Insightful

      Well, a watt is a joule/second.

      A calorie is the amount of energy to raise 1 gram of water by 1 degree Celsius and there are 4.19 Joules in a calorie. Therefore, 100 kilowatts = 100 000 W = 100 000 J/s ~ 25 000 calories/s which means we could raise 25 kg of water by 1 degree in 1 second. Now this would have to depend on the surface area of the target - it could be 2.5 kilograms of water by 10 degrees in a second or .25 kilograms of water by 100 degrees. This is not particularily accurate but it gives you an idea of the power - water is not particularily easy to heat and if this laser could fire for even a few seconds on a fairly small surface area....ZAP!

      --

      In Soviet Russia, hot grits put YOU down THEIR pants.
    6. Re:Can somebody give me an idea... by Anonvmous+Coward · · Score: 2

      "Well, obviously, if you haven't heard of it, there's no way it could possibly exist."

      Hahahahahaah! So let me get this straight, you're trying to insult me for asking a question? Heh. I take it you don't know the answer, then. Hahaha what a dork.

      "I'm a ChickenHawk, and I only eat chickens!!" Hee hee that's what you sound like!

  30. For those asking why this is being developed by shut_up_man · · Score: 1

    I think Trinity said it best... "Dodge this".

  31. superconductors by Anonymous Coward · · Score: 0

    Perhaps somebody could fill me in on the efficiency of modern laser systems, but it strikes me that they're tackling the *side-effects* of a bad design, as opposed to fixing what's wrong in the first place.

    Should they not be instead be aggressively persuing high temperature superconductors (and associated compact cryogenics) as a means to avoid generating this kind of heat in the first place? This should make for a vastly more efficient laser design and permit much greater transfer of the full 900kw input electrical energy to offensive energy output.

    Why build a 100kw laser when you might be able to have closer to 800kw with a superconductive coil?

    1. Re:superconductors by Anonymous Coward · · Score: 0

      I've read all the comments attached to this article, even the shit moderated down to -1. There are Real Genius jokes and Austin Powers jokes and a bunch of people who don't understand the relationship between watts and joules and horsepower. But this is, by far, the dumbest comment I've seen.

      How the fuck would superconductors help in this situation? Do you think we're losing 90% of our energy to heat because of copper wiring? You ignorant bastard. You honestly have no idea how lasers work, do you? Lasers are inherently inefficient things; efficiency on the order to 10% is amazing, compared to the average efficiency of 1% or so for lasers of much lower power output.

      You are a fucking idiot.

  32. unlikely by Preposterous+Coward · · Score: 2
    OK, I can't speak definitively for fighter aircraft, but in the light aircraft that I fly, the fuel tanks are most definitely not sealed. If the fuel tanks were sealed, as you burned fuel, you'd be creating a vacuum in the tank that would make it increasingly difficult to feed fuel to the engine. The fuel tanks vent to the outside both to keep them pressurized and to allow for overflow due to thermal expansion.

    By the way, jet fuel doesn't just burn "like" kerosene: Jet A is kerosene. (Though it's my understanding that certain military aircraft use a different fuel mixture than standard transport aircraft; and light aircraft generally use something like 100LL avgas, which is 100-octane low-lead fuel.)

    --

    "Biped! Good cranial development. Evidently considerable human ancestry."
    1. Re:unlikely by Sylver+Dragon · · Score: 2

      Hmm, didn't know that about light aircraft. How does the vent system prevent spillage during manuvering? Also, wouldn't that be a bit of danger in a Fighter craft? I mean, 1 good bullet could ignite a fuel tank, especially if it is a tracer round.

      As for the burning "like" kerosene, I know, I was just making a bit of a joke out of it. Sorry, guess I failed.

      --
      Necessity is the mother of invention.
      Laziness is the father.
  33. Obligatory Austin Powers Joke... by taernim · · Score: 1

    Dr. Evil: "You know, I have one simple request, and that is to have sharks with freakin' laser beams attached to their heads. Now evidently my cycloptic colleague informs me that that can't be done. Can you remind me what I pay you people for? Honestly, throw me a bone here!" ;)

    --
    "PC Load Letter? What the $@#% does that mean?!"
  34. but the really funny part... by Preposterous+Coward · · Score: 2

    ...is not the question as much as the answer: not right now ;-)

    --

    "Biped! Good cranial development. Evidently considerable human ancestry."
  35. Not the first time fuel has been used to cool by xmnemonic · · Score: 3, Interesting

    The legendary SR-71 (high altitude mach 3 spyplane) kept the fuel stored at an extremely low temperature in the tanks (sub zero initially I believe), then pumped it through fuel lines running throughout the aircraft. The fuel would absorb the heat from the various internal components of the plane before arriving at the engines.

    1. Re:Not the first time fuel has been used to cool by Sylver+Dragon · · Score: 2

      Odd, I seem to recall that the SR-71's fuel tanks also leaked at low temperature. That'd make it a real pain to keep the liquid cooled. Though not outside the realm of posibillity.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    2. Re:Not the first time fuel has been used to cool by xmnemonic · · Score: 2, Informative

      They did not leak because of the low fuel temperature. They leaked because of loose sealings that had to exist due to the expansion of the materials in high-speed, high-friction flight. The JSF will not experience such heat and likewise will not need accomodations like this.

    3. Re:Not the first time fuel has been used to cool by Moofie · · Score: 2

      The SR-71 didn't use cryogenic fuel. It used a hydrocarbon fuel not very different from kerosene.

      I didn't realize, however, that it used fuel to cool the toasty bits. I'll read up on that. I'm on a team at school that is looking at using the J58 engine cores from the '71 as the first engine stage for an air-breathing SSTO vehicle. We're going to need to cool our airframe a bit. : )

      --
      Why yes, I AM a rocket scientist!
    4. Re:Not the first time fuel has been used to cool by Phanatic1a · · Score: 5, Informative

      It used a hydrocarbon fuel not very different from kerosene.


      Very different from kerosene. Most military jet aircraft run on JP-5 or JP-8, which are essentially aviation kerosenes.

      The SR-71 runs on JP-7. JP-7 is a more viscous fuel with a low vapor pressure and a very high flashpoint. So high, in fact, that the SR-71 can't start its own engines. To light the fires on a Blackbird takes a chemical ignition system, where the ground crew squirts a measure of tetraethylborane into the engines. TEB is actually hypergolic with JP-7, and the resultant explosion starts the engines.

      The airframe heats up to 1000 degrees F in high mach flight, and so it has to be built to fit together nice at the higher temperature. When it's on the ground and cool, it does indeed leak fuel like a sieve. And yes, they do pump fuel from tank to tank in flight to cool hot spots.

      Dear lord, what a plane. 5.2 thrust-to-weight ratio. 3200km/h. 85,000 ft ceiling. 1100 C inlet temperatures. 2000 degree combustion exhaust. Has successfully evaded over 4,000 SAMs.

      Like, wow.

    5. Re:Not the first time fuel has been used to cool by thogard · · Score: 1

      Not to mentioned designed and built before most of the people reading about it.

    6. Re:Not the first time fuel has been used to cool by Tablizer · · Score: 2

      The legendary SR-71 (high altitude mach 3 spyplane) kept the fuel stored at an extremely low temperature in the tanks (sub zero initially I believe), then pumped it through fuel lines running throughout the aircraft. The fuel would absorb the heat from the various internal components of the plane before arriving at the engines.

      Not a very safe design it sounds like. One missle or spark could set the whole plane ablaze pretty quick. I guess their strategy was to assume that they could outrun any danger.

    7. Re:Not the first time fuel has been used to cool by borgboy · · Score: 1

      I was under the impression that they used UDMH - Unsymmetrical Dimethylhydrazine - as a starter. Was that misguided?

      --
      meh.
    8. Re:Not the first time fuel has been used to cool by Breakfast+Pants · · Score: 1

      Lets hope these lasers don't get into the hands of THE ENEMY. Its pretty hard to outrun a LASER!

      --

      --

      WHO ATE MY BREAKFAST PANTS?
    9. Re:Not the first time fuel has been used to cool by Phanatic1a · · Score: 2

      I guess their strategy was to assume that they could outrun any danger.


      There was no assumption about it; that's specifically what it was designed to do. The SR-72 could, outrun any danger, and probably still could today. When it's going into hostile airspace, it's running flat out at over Mach 3, and at very high altitudes of over 80,000 feet.

      Even if the plane you're trying to intercept it with can go that high, that's a hella difficult intercept geometry. Even for SAMs, which can travel at high Mach numbers, that's a hella difficult intercept geometry.

      Over 4,000 missiles have been fired at SR-71s over the years. Not one SR-71 was ever lost due to enemy fire.

      Assume, my ass. And really, let's face it; if you take a missile hit at Mach 3 and angels 80, the design of your fuel tanks is not going to make a bit of a difference, because the aerodynamic forces are going to rip the plane to shreds faster than you can say "Challenger."

      The fuel wasn't cryogenic, either. STP when it went into the tanks.

    10. Re:Not the first time fuel has been used to cool by Anonymous Coward · · Score: 0

      Hard to shoot down a plane that travels faster then most missiles. SR71 is the only (?) plane that can shoot itself down if it had missile capabilities. ;)

      The 71 also leaked fuel like mad due to the fact the air frame had 'holes' in it. The frame expanded at high speed and sealed itself up (from heat). The 71 had to be refueled shortly after lift off because most of it's fuel would be leaked away on take off....

    11. Re:Not the first time fuel has been used to cool by GooberToo · · Score: 1

      With a six mile kill range stated for the laser, the plane shooting the SR-71 would have to be around 32,000 ft or higher AND be able to shoot up rather than down.

    12. Re:Not the first time fuel has been used to cool by Anonymous Coward · · Score: 0

      The SR-71 runs on JP-7. JP-7 is a more viscous fuel with a low vapor pressure and a very high flashpoint. So high, in fact, that the SR-71 can't start its own engines.


      I believe starting up also required an external "starter motor" in the form of a high performance V-8. Saw it on the discovery channel, I think.

    13. Re:Not the first time fuel has been used to cool by Zaak · · Score: 1

      One missle or spark could set the whole plane ablaze pretty quick.

      Not really. The fuel has such a high flash point that the SR-71 cannot light its own engines.
      Not to mention that there isn't a missle that can hit an SR-71.

      TTFN

    14. Re:Not the first time fuel has been used to cool by zmooc · · Score: 1
      From this post by Phanatic1a:

      The SR-71 runs on JP-7. JP-7 is a more viscous fuel with a low vapor pressure and a very high flashpoint. So high, in fact, that the SR-71 can't start its own engines. To light the fires on a Blackbird takes a chemical ignition system, where the ground crew squirts a measure of tetraethylborane into the engines. TEB is actually hypergolic with JP-7, and the resultant explosion starts the engines.

      So sparks won't be the problem. Missiles will be, but the SR-71 won't be hit by missiles on a regular basis:)

      --
      0x or or snor perron?!
    15. Re:Not the first time fuel has been used to cool by Tablizer · · Score: 2

      (* and a very high flashpoint. So high, in fact, that the SR-71 can't start its own engines. *)

      What if it's engines stall for some reason in mid flight? M-80?

      Also, how fast are high-end SAMs?

    16. Re:Not the first time fuel has been used to cool by Tablizer · · Score: 2

      (* Over 4,000 missiles have been fired at SR-71s over the years. Not one SR-71 was ever lost due to enemy fire. *)

      What *were* the losses due to?

      Sounds like a good way to deplete a country's missle stock, fly blackbirds around and around and they keep trying. 4,000 missles is about 4-billion US dollars worth of missles assuming a million bucks each.

      It is a cool-looking plane. I always wanted a desk model, but I don't have the patience to glue it myself. Plus the glue fumes make me high, making me troll wrongly and lose karma :-)

      Maybe I'll check on ebay.

    17. Re:Not the first time fuel has been used to cool by itwerx · · Score: 2

      What's even scarier is that it's obsolete...

    18. Re:Not the first time fuel has been used to cool by Phanatic1a · · Score: 2

      What *were* the losses due to?


      Mechanical failures or accidents.

    19. Re:Not the first time fuel has been used to cool by Tablizer · · Score: 1

      Mechanical failures or accidents.

      No captured-U2-pilot-like show trials?

  36. and yet it still cant fly by Anonymous Coward · · Score: 0

    Would anyone care to explain why they are giving out contracts to expand on an aircraft that has YET TO FLY. I have several friends on the project, and the government is STILL using northrups YF22 for the "test bed". Seems kinda premature to give out contracts to improve a design that still doesnt work.

  37. Which suggests the obvious solution... by devphil · · Score: 3, Funny
    I would bet that they could rig up some sort of Athelon style heat sink, the air flow over it at Mach 1 should be able to take care of the heat. That seems the be how much air flow is required in my Dual Athelon system here.

    They need a case mod for the JSF. I suggest one of the water-cooled systems; a second non-laser-firing plane can fly alongside with the radiator. Only a few hundred meters of tubing for the water would be needed to connect the two.

    Alternatively, mount a gigantic fishtank on top of the aircraft.

    I don't remember any of the other weird case mods that have been posted here, for which I'm sure all of you are thankful. :-)

    --
    You cannot apply a technological solution to a sociological problem. (Edwards' Law)
    1. Re:Which suggests the obvious solution... by Anonymous Coward · · Score: 0

      of course, then we can mount the laser on the head of the shark inside

  38. Focusing the beam by RayBender · · Score: 3, Informative
    These clowns never mentioned that the "adaptive optics" they want to use to keep the beam focused are very experimental (in this application). I have worked with the stuff, and it is ok for astronomy - but actually focusing a laser in the sort of environment the JSF will be in (low altitude, high-G forces, turbulent flow across the aircraft skin) strikes me as really hard.

    I'd say we should wait and see how the ABL performs before getting rid of the trusty ol' AMRAAM.

    --
    Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
    1. Re:Focusing the beam by Anonymous Coward · · Score: 0

      Adaptive optics . . . shouldnt be too much of a problem. fly the plane in a straight line, put the laser in a place on the plane where there isn't aren't any objects protruding upstream of the turret.
      Arranging a "clean" (non-turbulent) flow situation probably isnt as hard as targetting, and heat dissipation

    2. Re:Focusing the beam by RayBender · · Score: 1
      But the turbulence in the atmosphere between the plane and the target.... i.e. the same stuff that makes the stars twinkle. It'll disrupt the beam and spread it out, likely by enough to make the beam more or less harmless, unless corrected. And doing that correction is very hard.

      --
      Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
    3. Re:Focusing the beam by Anonymous Coward · · Score: 0

      i.e. the same stuff that makes the stars twinkle. It'll disrupt the beam and spread it out

      Simple: Just pass a Geneva convention to ban twinkling stars.

    4. Re:Focusing the beam by Anonymous Coward · · Score: 0

      I think if you do the calculation you'll find that the beam spread is not too significant under the circumstances they're talking about (range <6km, thousands of feet above the ground).

      My guess is they could leave out the AO and still get acceptable performance.

      AC.

    5. Re:Focusing the beam by RayBender · · Score: 1
      Well, possibly. SOFIA which is an airborne observatory expects to get 2-4 arcsecond seeing at 40,000 ft. If the JSF laser does something similar then yes, the beam spread will be small enough to not be a problem. They'll just have to manage the boundary layer carefully..

      --
      Human genome = 3 billion base pairs = 6 GBit. Windows + Office = 20 Gbit. Which is more impressive?
    6. Re:Focusing the beam by juju_ben · · Score: 1

      It's not intended to replace missile systems. The story indicates a range of about 6 miles, putting it in a class more similar to the cannon. Although from what I've noted so far, assuming sufficient slew rate in the turret and rate of fire, I'd think one of its primary uses would be point defence (ie: shooting down missiles fired at the plane), a function for which there is no current system to replace.

      --
      -- juju_ben. "You dance just like the angels dancing on the head of the pin jabbed into my minds eye."
    7. Re:Focusing the beam by Anonymous Coward · · Score: 1, Informative

      These clowns never mentioned that the "adaptive optics" they want to use to keep the beam focused are very experimental (in this application).

      I wouldn't call these guys "clowns." Adaptive optics was actually developed as a classified project by the DOD in the 1980s.

      They were kind enough to unclassify most of the research so that it could be used by astronomers.

    8. Re:Focusing the beam by foobar104 · · Score: 2

      Yeah, and it will have the same effect on the laser weapon that it has on the stars, too. In other words, that'll be 100,000 watts of burning, annihilating, twinkling death raining down on you.

    9. Re:Focusing the beam by Sokie · · Score: 2

      Aren't AMRAAM's air-to-air missiles? Advanced Medium-Range Air-to-Air Missile? Sounds like this is for air-to-ground so it would be more a replacement for things like HARM's. But the HARM is rader guided and has a range much longer than ~6km. But there is the advantage of the laser not having much of a time-in-transit. :)

      -Sokie

      --
      ------
      Where are the slash-groupies? I distinctly remember being promised slash-groupies!
  39. It might be possible by cr@ckwhore · · Score: 2

    Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat

    Just a quick proposal here... perhaps it may be easier to dissipate 9,000 hectowatts of heat with current technology. Even better, I think they could probably dig up a cooling fan from a overclockers outlet that'll dissipate 90,000 deciwatts of heat with ease.

    --
    Skiers and Riders -- http://www.snowjournal.com
    1. Re:It might be possible by cr@ckwhore · · Score: 2

      ... oops... meant to say 90,000 DECAWATTS ... not to be confused with 1.21 gigawatts.

      --
      Skiers and Riders -- http://www.snowjournal.com
    2. Re:It might be possible by Anonymous Coward · · Score: 0

      You think you're cool but you're actually fucking stupid

  40. No! by DarkHelmet · · Score: 2
    Housed in a dome within the aircraft, the laser's turret would emerge for firing [sound familiar?]

    You ignorant slut! Those are Phase Cannons, which use an entirely different technology than a laser.

    Enterprise is NOT Austin Powers. They do not use "LASERs"

    That's it! No Xbill for a week, Michael! You must suffer for your non-geekish ways, and suffer you shall!

    --
    /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i
  41. Star Trek? Huh? by smoondog · · Score: 3, Funny

    Housed in a dome within the aircraft, the laser's turret would emerge for firing [sound familiar?]

    I find the suggestion of a Trek parallel humorous. Of course a laser turret that emerges to fire is somehow the visionary genius of a Trek writer. But, I guess whale penises do that too. Oh well...

    -Sean

  42. STAR TREK!? by Anonymous Coward · · Score: 0

    Oh come ON. Anyone with a brain knows this is a rip-off of Real Genius, not Star Dreck V'ger.

    "The Crossbow Project--there's no defence like a good offense"

  43. spy vs spy by Brigadier · · Score: 2


    anyone else have images in there head of a joint strike fighter being sizzled with the black spy (insert terrorist of your choice) in a broken down mig one with a mirror hanging off the tail fin grinning in the for ground.

  44. Heat dissipation? by r_j_prahad · · Score: 1, Redundant

    The problem? According to this Aviation Week article, Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat.

    Have they asked AMD for help yet?

  45. What about clouds? Fog? by dpbsmith · · Score: 2

    Maybe I'm missing something really obvious, but I don't see how it can achieve "airborne and ground kills at a distance of more than six miles" unless the air is clear. Heck, they say they need to do special tricks just to get the beam through the aircraft's own turbulence.

    If the laser is powerful enough I suppose it can evaporate the fog, but... let's see, World War II "FIDO" (Fog, Intense, Dispersal Of) installtions used 75,000 gallons of gasoline. I'm not sure just how long those 75,000 gallons lasted, but I don't think it was very long. Let's say an hour. One gallon of gasoline/hr = 100,000 BTU/hr = 30 kilowatts. So a FIDO installation while in operation might have been putting out about 2000 megawatts.

    On a clear day, you can kill forever?

  46. Joint Strike FIghter by Anonymous Coward · · Score: 0, Funny

    As a member of the National Association of Hemp Workers and Marijuana Growers Union (NAHWMGU), I must protest Slashdot's support of joint strike fighters.

    The right of Hemp workers everywhere to join together and protest for better working conditions must be preserved. If you are a Hemp worker, please contact your local chapter for more information on joining the Joint Strike. Don't let Slashdot keep you down!

  47. Playing fast and loose with power and energy by HotNeedleOfInquiry · · Score: 3, Informative

    "to get 100 kilowatts of light out, you've got to put a megawatt of electrical power in, so somewhere along the way you've got to deal with 900 kilowatts of cooling," This sentence means nothing to an engineer. Here's why: 900 kilowatts over 1 millisecond is 1/4 of a watthour. A trivial amount of energy to dissipate. Over 1 second, it's 250 watthours, no big deal, but not trivial. Over 1 hour, it's 900 kilowatt hours, a very big deal. Without time, it's just big impressive numbers for the ignorant masses.

    --
    "Eve of Destruction", it's not just for old hippies anymore...
    1. Re:Playing fast and loose with power and energy by HotNeedleOfInquiry · · Score: 1

      Correction, I should have said "A trivial amount of *power* to dissipate".

      --
      "Eve of Destruction", it's not just for old hippies anymore...
    2. Re:Playing fast and loose with power and energy by puppet10 · · Score: 1

      correction correction.

      Watt = J/s (Energy / Time) = Power
      WattHour = J/s * Hour (Energy *Time/ Time) = Energy

      --
      -------- This space intentionally left blank --------
    3. Re:Playing fast and loose with power and energy by Anonymous Coward · · Score: 0

      I haven't read the article, so I'm ACing, but it seems to me you would need to store the energy to be dissapated over the hour you mention, and therein lies a significant problem. Further, it appears you are assuming that the users of the Kill Beam of Death would want to kill more than one thing per hour. How do you respond, sir?

    4. Re:Playing fast and loose with power and energy by Anonymous Coward · · Score: 0

      Yes, of course cooling is invariant over time. Oh, wait, it's not. So how exactly does it make any difference the length of time, since the cooling capacity is also measured in watts for it to make sense? What are you talking about?

  48. Red or Green? by Thakandar2 · · Score: 1

    ...Cause that's the difference between the good and bad guys.

  49. Isn't there a way... by Uncle+Gropey · · Score: 1

    ...to rapidly dissapate heat by sending an electrical charge through a carrier that is gradually tapering into different alloys of metal? It cools one end while increasing heat in the other. Does anyone know wtf I'm trying to think of?

    1. Re:Isn't there a way... by pcfe · · Score: 1

      Yupp, a peltier element

  50. Simple solution by gnovos · · Score: 2

    I would think the simple solution would be to pump the heat directly to the afterburners so that after firing a laser would could be very easily traced back to your plane (just follow the straight line), you could use the burst of speed to flit away.

    --
    "Your superior intellect is no match for our puny weapons!"
    1. Re:Simple solution by joshki · · Score: 2

      JSF is a stealth fighter. Afterburners are very bad things to use over enemy territory in a stealth jet. I'm sure the JSF is built to have almost no heat signature at all -- lighting off the afterburners would negate any advantage it has in terms of stealth.

      --
      I do not read or respond to AC's. If you want a discussion, log in. Otherwise, don't waste your time.
  51. Not really a "silver bullet" by xmnemonic · · Score: 1

    It will be quite an effective weapon if put into use, though I think it will be far from what some people are thinking it as being a magic weapon that can instantly disable vehicles from afar. Depending on the type of vehicle, the laser would have to be fired for different amounts of time, possibly long enough to endanger the safety of the attacking aircraft more than usual. Clouds and fog would also absorb some energy if not completely obscure the laser (not to be confused with the refraction caused by air mentioned in the article, cured by adapative optics) at times.

    Somewhat unrelated to my main post, I wonder to what degree they intend for the laser to damage vehicles? Are they talking softening of parts of the airframe of an aircraft allowing for aeroelasticity to take its toll, or ruptured fuel tanks?

  52. I've heard things, i've heard things by matto14 · · Score: 0

    maybe they should try water cooling.

    --
    SCREW FLANDERS
  53. Re:Michael steps out by Anonymous Coward · · Score: 0

    Now *that's* hot.

  54. Re:Sundiver - using a laser to dissipate heat by count0 · · Score: 2

    Well, in Sundiver, the book you remember, heat is absorbed and used to generate power for the laser - the key being superefficient power generation, which we don't have today.

  55. the fuel was used to keep the skin cool by Anonymous Coward · · Score: 0

    air friction at high speeds is a big problem that is why titaninum is used because aluminim would melt

    1. Re:the fuel was used to keep the skin cool by xmnemonic · · Score: 1

      Yes. I had remembered that it was used to cool the skin but while I was verifying my facts, I read that the fuel was used to cool some internal components and in my haste only mentioned the latter in my post and not the former.

  56. Attention Overclockers! by Gefiltefish · · Score: 1

    Take notice, all of you overclocking fanatics!

    This is your golden opportunity to take that experience in getting an extra 8% performance from your CPU and putting it to use in a cool-as-hell defense application

    Your knowledge of conduction, convection, peltiers, and liquid nitrogen cooling systems FINALLY has a greater purpose than bigger numbers at POST and on Sandra!!

  57. Easy.... by Querty · · Score: 1

    "Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat."

    No problem, my overclocked Athlon produces about that amount of heat. Just buy a big CPU cooler ;-)

  58. Lazers! That not right??? by JonathanTWilson · · Score: 1

    Along, along time ago, in a galaxy not so far away...

    There was a small planet called Earth, and on that planet there was an even smaller country called USA that once signed an international treaty that agreed to outlaw the usage of lazer weapons. Do the America government ever honour their obligations?

    Once again we have more of this U-S-A chanting. In about 10 years time every country in the world will just be another star on the American flag.

    1. Re:Lazers! That not right??? by Vinum · · Score: 2, Informative

      Actually the international treaty just banned the use of lasers designed for no reason other then to blind soldiers.

      It is ok to make lasers that kill or destroy objects.

    2. Re:Lazers! That not right??? by Fiveeight · · Score: 1

      And Anti-Ballistic Missile systems. But they wouldn't back out of that one, would they? Waitasecond...

    3. Re:Lazers! That not right??? by pcfe · · Score: 1


      Then again, they might come to the conclusion that it is easier just to blind the people and not bother with the hassle of making the weapon able to just disable a vehice.

      The US seem really to believe they are alone on the planet, it would not be the first time that they do not bother to adhere to a treaty they signed.

    4. Re:Lazers! That not right??? by Vinum · · Score: 1

      Ya.. I mean.. the US has nothing better to do than put a million dollar weapon on a billion dollar jet just to blind you. No, I think maybe they want this laser to dominate air space and destroy ground based missile systems. I could be wrong though.

      Even so, treaties are kept and broken all the time by different countries in the world.

      If US thought it was the only country in the world it would of bombed Iraq a long time ago, and probably the entire middle east... Ohh wait, wouldn't there have to be other countries in the world in order to go bomb them?

      See, there actually was a point in time when the US tried to be the only country in the world. This was back during WWI and you had a movement in the world where we wanted to stay out of world affairs and just be isolated. Of course, we were shorly bombed by Japan at Pearl Harbor.

      Every time there is a Slashdot story about US and what new weapon they have all the foreign people start feeling penis envy and start bashing the US right away. :)

    5. Re:Lazers! That not right??? by Vinum · · Score: 1

      I hate to reply twice in a row, but a thought hit me right as I hit submit. This is kind of off topic, but who cares.

      The Internet itself was founded by the US government. Origionally as we all know it had military applications but it was quickly opened to the public. One of its primary goals was the spread of information and communication. It was also thought that it could possibly eliminate political/social/ethnic boundaries and move the world to a more utopian state.

      Sadly this dream never came true or this thread would of never started in the first place :/ And I find myself read a US-centric web site refering to some people as foreign. I guess the more things chance the more they stay the same.

      Thank God for beer.

    6. Re:Lazers! That not right??? by Ozymandias_KoK · · Score: 1

      That would be a poor choice. If you blind the people, then more people can come and use the functioning equipment. That's why the main focus is to destroy the equipment. In that case, it is not necessary to (directly) kill anyone, because if their equipment doesn't work they are still out of the fight.

    7. Re:Lazers! That not right??? by Anonymous Coward · · Score: 0

      YEA RIGHT! Like the united states would let countries that have utterly failed like france into the system. Ever hear of colonies? If we go kicking everyones but they won't get voting rights.

  59. f*cking engineers by Anonymous Coward · · Score: 0

    inventing new toys so that the alpha males can kill the innocent

    1. Re:f*cking engineers by foobar104 · · Score: 2

      Guilt. These weapons are used to kill the guilty. Try to remember that, okay?

  60. Math Time by AtomicSnarl · · Score: 1

    OK - 1 Watt = 4.19 calories

    So 900,000 W / 4.19 = 214,797 calories

    1 calorie warms 1 gram of water 1 degree Celcius

    So 900 Kw would raise 1000 Kg of water .21 degrees Celcius.

    Even if the fuel had half the heat capacity as water, it would still serve as a huge heat sink for the laser.

    --
    Pacifist paratroopers yell, "Ghandi!" when they jump.
    1. Re:Math Time by Anonymous Coward · · Score: 0

      Rather than dividing, you should multiply 900,000 W * 4.19 [calories per watt] which yields 3,771,000 calories. So, 900kW would then raise 1000kg of pure water 3.771 degrees celsius.

    2. Re:Math Time by Alien+Being · · Score: 2

      "So 900 Kw would raise 1000 Kg of water .21 degrees Celcius"

      per second

    3. Re:Math Time by Bobartig · · Score: 2

      Check it out:
      Specific Heats:

      Water: 4.196
      Kerosene: 2.100 ;)

      Whaddya know? I sure wouldn't have thought of it, but then again, I don't design fighter planes.

      --
      This is where I get my recommended daily allowance of "Foot in Mouth."
    4. Re:Math Time by Negadecimal · · Score: 2

      OK - 1 Watt = 4.19 calories

      A watt is a measurement of power (joule/sec).
      A calorie is a measurement of energy.

      You can't equate them. Alien Being's on the right track...

    5. Re:Math Time by Anonymous Coward · · Score: 0

      I'm sure they aren't firing it more than a few seconds at a time.

    6. Re:Math Time by Anonymous Coward · · Score: 0

      http://www.ceeo.tufts.edu/curriculum/classroom/jou les.html

      joules==calories

    7. Re:Math Time by Anonymous Coward · · Score: 0

      But isn't power just energy transfer / second ?

      Did he forget to say all of this was happening in 1 second ?

    8. Re:Math Time by belroth · · Score: 2
      Actually it's be for a fraction of a second, a common problem when trying to use lasers to burn through metal is that the vaporized metal disrupts the laser.

      Also if you put the same energy into a shorter burst, that increases the power.

      --
      I hereby inform you that I have NOT been required to provide any decryption keys.
    9. Re:Math Time by f97tosc · · Score: 1

      Two problems

      1 As many others have pointed out, watt is per second. But this is probably OK, the laser won't fire for that long.

      2 How do you quickly conduct all the generated heat out to the 1000 kg of water? If you just put the thing in a swimming pool, then you risk having the water in immidiate contact with the laser boil in an explosive manner, rather than having the whole pool warmed a tiny bit. And now, we were talking about jet fuel...

      Tor

  61. Beginning of the end of US aerial dominance by Mittermeyer · · Score: 3, Insightful

    This project is utter foolishness. If we figure out how to operate a 1mW 6.2 mile laser on a fighter, that makes it portable enough to fit on a truck or tracked vehicle. With a greater percentage of a groud vehicle being able to be committed to power systems, a ground-based mobile laser will be ablt to outpower an airborne version, and likely be a LOT cheaper.

    Outranged outgunned outnumbered airplanes are NOT what we want. We are trading decades or our airpower in for a few measly years of SAM and ground strike invulnerability. This direction is NOT smart for us.

    --
    ________________________________________ History Must Not Fall Into The Wrong Hands ___________________________________
    1. Re:Beginning of the end of US aerial dominance by Galilee · · Score: 0

      You have to figure the speed of the jet compared to the speed of the ground based unit. Even with the same range, the jet will be able to move into range and fire the laser before the ground based unit will be able to aim and fire at the jet.

    2. Re:Beginning of the end of US aerial dominance by Flamerule · · Score: 2
      If we figure out how to operate a 1mW 6.2 mile laser [...]
      First of all, it's a 1MW laser, not a 1mW. I read that as "milli" and did a double take.
      [...] With a greater percentage of a groud vehicle being able to be committed to power systems, a ground-based mobile laser will be ablt to outpower an airborne version, and likely be a LOT cheaper.

      Outranged outgunned outnumbered airplanes are NOT what we want. We are trading decades or our airpower in for a few measly years of SAM and ground strike invulnerability. This direction is NOT smart for us.

      Your argument doesn't make sense. You just mentioned SAMs -- ask yourself, what's the difference between rocket-based weapons and lasers? By your reasoning, ground-based vehicles armed with missiles should be able to annihilate similarly-armed aircraft. Obviously they don't, because the aircraft has the advantages of maneuverability, speed, and stealth.
    3. Re:Beginning of the end of US aerial dominance by ergo98 · · Score: 1

      So if the US doesn't investigate it, the world will remain ignorant of laser technology? Do you not think that there are people right now throughout the globe trying to figure out how to use lasers as weapons?

      Anyways, all they need to do is spring for the chrome option when they pick up their JSF at the showroom.

    4. Re:Beginning of the end of US aerial dominance by ergo98 · · Score: 1

      You just mentioned SAMs -- ask yourself, what's the difference between rocket-based weapons and lasers?

      While I doubt the original post's logic as well, there is a very large difference between SA missiles and SA lasers : SA lasers reach their target at 300,000km/second, versus maybe 4000km/h. The former means that lasers really don't have to "maneuver".

    5. Re:Beginning of the end of US aerial dominance by Fiveeight · · Score: 1

      Plus, lasers are massively more effective up high. How effective would a ground based laser be in a sandstorm? Or when it rains? Or when something's burning nearby (not unheard of in warfare)?

    6. Re:Beginning of the end of US aerial dominance by ergo98 · · Score: 1

      The exact same airborne obstacles to a laser "going up" apply to it coming down, though. I guess if you mean that the laser would be effective A2A, then that is logical, but if it's being shot at a ground target then the advantage is pretty much equalized.

    7. Re:Beginning of the end of US aerial dominance by Fiveeight · · Score: 1

      Yeah, I think early laser systems will be for killing aircraft. Very high speeds and relatively low power makes a great A2A weapon, but a less effective tank/IFV/building killer.

    8. Re:Beginning of the end of US aerial dominance by Glytch · · Score: 2

      Hey, maybe we'd see a return to the old 50's-style shiny chrome aircraft!

    9. Re:Beginning of the end of US aerial dominance by Anonymous Coward · · Score: 0

      I see no point in shooting a laser from an aircraft at a target on the ground. The laser transmits at most 10% of the energy used. The laser needs a fuel with particular properties, so surely a bomb will have higher energy density. The laser is effective at destroying incoming missiles and possibly aircraft through heating and ablation, but this has little effect on buildings and tanks.

      Thus a bomb is both easier to deploy and more effective against ground targets. The exception would be if your targeting were unbelievably good (much better than is possible today) in which case a laser could kill one or a few particular people on the ground without damaging their surroundings very much. But this is not possible in the foreseeable future.

    10. Re:Beginning of the end of US aerial dominance by Anonymous Coward · · Score: 0

      Strike aircraft can use standoff weapons at greater distances than ever before, and swarms of future smart munitions will be able to do impressive damage without offering themselves as targets. Enemy lasers will still be detectable, trackable, and killable.

    11. Re:Beginning of the end of US aerial dominance by matrix29 · · Score: 2

      Hey, maybe we'd see a return to the old 50's-style shiny chrome aircraft!

      You mean old 50's-style shiny RED chrome aircraft.

      If the aircraft is the color of the beam color then most of the beam will also be reflected. Refer to the RINGWORLD books if you're curious as a red shirt being hit by a red beam equals zero effect.

      --
      "Face it, a nation that maintains a 72% approval rating on George W. Bush is a nation with a very loose grip on reality.
    12. Re:Beginning of the end of US aerial dominance by Glytch · · Score: 2

      I agree that a red shirt being hit by a red beam means a zero effect, but that's only because Kirk, Spock and McCoy would have found a way to escape their prison cell anyway without his help.

    13. Re:Beginning of the end of US aerial dominance by Mittermeyer · · Score: 2

      Yes they are. Chances are the Russians have a continuing active program, and I KNOW the Chinese are big on blinding laser systems so yes others are working at it. But when we chunk a couple billion at an engineering problem we often get results which would have taken the other countries decades to achieve. And a laser-filled world is not to our advantage.

      This reminds me of Britain building the Dreadnaughts, obsoleting their battlefleets overnight, expending huge amounts of money, and when push came to shove the real threat was the sub. Yes they had control of the seas for 25 more years, but they would have been better off finding a cheaper solution for their maritime defense.

      --
      ________________________________________ History Must Not Fall Into The Wrong Hands ___________________________________
    14. Re:Beginning of the end of US aerial dominance by Mittermeyer · · Score: 2

      I'm saying the ground-based unit can have greater range because it can carry more power around then a jet that is busy trying to not fall down.

      Then the game turns to the sensor acquisition game. Can our postulated AA truck stay hidden from JSTARS and low-flying satellites, versus a plane that will be very stealth but ultimately will have to do something about all that exhaust.

      Finally, there is economics. For the $35-50 million a laser JSF will cost, betcha I can build at least 7-10 trucks. I win on sheer numbers.

      --
      ________________________________________ History Must Not Fall Into The Wrong Hands ___________________________________
    15. Re:Beginning of the end of US aerial dominance by Mittermeyer · · Score: 2

      Yes I was bad for putting in the small m.

      There is a big difference between ground SAMs and airborne missiles- namely that the ground-based missile has to get up to speed, and the air-based missiles are already launching at Mach 1+. Therefore the ground SAMs have to be much much larger to get the same job done, which also affects their maneuverability. And as you pointed out the plane is a far more mobile target then the missile and is being piloted by someone who very much wants to live.

      Nonetheless, ask the air force how they feel about Russian S-300s. They are very very concerned about the latest SAMs from Putinville. And we keep putting off decent EW replacements, but that is another issue.

      Lasers on the other hand are quite even in the speed department. It will make no difference to Mr. Laser how hot Maverick is flying his plane.

      What's more, unlike SAM batteries that only have a few shots the truck laser can shoot dozens of shots with a chemical power source, and far more if hooked up to a local power grid.

      Finally there is cost. Assuming the JSF laser and sensors are a wash between the two platforms, it's simply cheaper to build trucks then JSF planes, and really easier to hide the high value laser trucks amongst thousands of ordinary trucks. There is stealth in numbers.

      I can lose three trucks to Iceman, kill your precious JSF with my fourth truck, and have enough left over for a conventional armor company that runs over your airbase protected by LAVs (guffaw!) and a month-long Spanish Riviera vacation for my generals.

      Airpower has been a vital component of Pax Americana for decades now. I hate to see us throw it away- it will mean more American blood shed when duty calls.

      --
      ________________________________________ History Must Not Fall Into The Wrong Hands ___________________________________
  62. Re:Thats a lot of heat! Couldn't that by Anonymous Coward · · Score: 0

    be solved by flying faster and faster? And I mean really fast.

  63. Re:Cooling via the fuel tank? - not a new idea by SAN1701 · · Score: 1

    Take a look at the good old Concorde

  64. Dude by AntiTuX · · Score: 2

    I totally just got a flashback to austin powers there. I don't know why, it just seems apt.
    Dr. evil and his obsession with "LAYSERS" (yes, I did the quote unquote finger thing when I wrote that).
    kinda like in the new one where his son gives him the sharks with lasers on their frickin heads.
    or the laser that he was gonna use to blow up the earth.
    funny shit.

  65. Re:hmmm... Yea why not try being nice? by Anonymous Coward · · Score: 0

    Or how about some food aid? Or what about sending over some real money to be used for education? Did you ever think of that you war mongerers

  66. F-22 = Raptor by mgsoden · · Score: 1

    The JSF is designated as the F-35 Thought you'd be interested.

    1. Re:F-22 = Raptor by sunking2 · · Score: 2

      I know, the point was simply that using fuel as a cooling system is not uncommon.

  67. insert subject here by Graspee_Leemoor · · Score: 1

    Double Kill!

    Head Shot!

    JSF is on a killing spree!

    graspee

  68. Braces by Zrech · · Score: 0, Troll

    I had braces for 2 years and could pickup some FM radio stations when I was in certain places in town. Kinda funny for a bit, then REALLY REALLLY FRIGGING ANNOYING. I know that was off topic from the subject, but not to the post I am replying to.

  69. Re:where do you get the power from? qjkx by Anonymous Coward · · Score: 0

    Chemical reactions I think. I don't think there's any electrical system involved--it has to do with a chemical reation directly creating a laser light. But I could be right.

  70. The way to greater weapons qjkx by Anonymous Coward · · Score: 0

    The answer? Libertarianism and the (related) abolishment of intellectual property. IP has limited all forms of science, and weapon control has stifled private research into weapons. Do you think the government has reason to do cool stuff? If these two things happened we'd have both these in a matter of months.

  71. Re:Cooling via the fuel tank? - not a new idea by Fiveeight · · Score: 2, Informative

    Same thing with the XB70 Valkyrie The Great White Bird

    "Heat is the major enemy of speed. Caused by the friction of cutting through the air, heat has limited the top speed of modern aircraft (such as the F-15) far more than power. Beyond Mach 2.5, friction increases at an ever-growing rate (for comparison, an SR-71 operating at Mach 2.2 heats up to about 275 degrees, but at Mach 3.2, skin temperatures rise to almost 900 degrees!). The same aerodynamics that gave the XB-70 so little drag helped minimize heat buildup. The hottest portions of the Valkyrie, her nose and horizontal splitter, reached a temperature of only 625 degrees during Mach 3 flight, with the majority of the XB-70s skin at a temperature of just 450 degrees! Equipment was placed in the fuel tanks, which acted as heat sinks. As the fuel soaked up the heat from the fuselage, it was drawn into the engines and burned away, leaving the cooler fuel behind. At the same time, it had to be replaced with nitrogen gas. The temperatures inside the tanks were high enough that just two percent oxygen would have caused the fuel to burst into flames -- a decidedly undesirable event."

    Just 450 degrees?

  72. A sophisticated way of relating to others? by Futurepower(R) · · Score: 5, Interesting


    For some people, this is an acceptable way to relate to other people. If you don't like other people, just kill them. Preferably from a long way away.

    It's profitable, too, for a small number of people, because the weapons are secret and therefore the profits can be kept secret.

    It's an adult video game. Except that you don't get to play. You, if you are an American taxpayer, only get to pay.

    There are a lot of people who would like to kill other people if it is free and they don't have to go to prison. It's a kind of mental illness. For more about this, see What should be the Response to Violence?

    Violence tends to cause other violence. Mostly hidden elements of the U.S. government are causing the U.S. to be a target of violence. For example, the U.S. government (taxpayers) spend more than $900 every year for every man, woman, and child in Israel so that Israelis can buy U.S.-made weapons to kill Arabs. It's a way of transferring money from the taxpayers to the weapons makers. It seems likely that this will result in another holocaust; I doubt the Arabs are kidding when they say they will never surrender.

    Every day in the U.S., it is possible to see American leaders on television calmly discussing the killing of other people. Of course, they have come to believe that they will never be the target.

    I accidentally posted this anonymously before, so here it is now, with my name on it.

  73. Tin-foil hats all round by grahamsz · · Score: 2

    Perhaps a tin-foil hat would actually be some use here.

    It'll be amusing when finds that you can beat a frickin big "laser" with a fickin big mirror :)

    1. Re:Tin-foil hats all round by octalc0de · · Score: 1

      you'll still die. your tinfoil hat doesn't have 100% reflectibility, let's just say for argument it has 99.9%.

      That's still a WHOLE lot of energy hitting you.

    2. Re:Tin-foil hats all round by grahamsz · · Score: 2

      Yeah but it'll stop the establishment from stealing my brain signals at the same time.

      Anwyay assuming the laser fires for 100mS then it'll dispatch 10kJ of energy, and 0.01% of which will distributed across my head (perhaps 4kg of water, with a shc of 4180J/kg) will only raise the temperature by about 0.5mK.

    3. Re:Tin-foil hats all round by BCoates · · Score: 2

      Googling makes it look more like 95-97% reflectivity for aluminum foil, so you'd absorb more like 300J. It'll also be distributed over the surface, not the volume of your head, so your standard 36g tinfoil hat would get nearly 10K hotter... a few dozen blasts of that could get painful!

      --
      Benjamin Coates

  74. Silly by Anonymous Coward · · Score: 0

    All planes do. Temperature at high altitudes is usually below 0 C, and naturally they don't waste enegry keeping the fuel warm and cozy.

  75. Re:Cooling via the fuel tank? - not a new idea by Anonymous Coward · · Score: 0

    Fuel-oil and fuel-hydraulic heat exchangers are common and vital to cooling engine oil, gearboxes, and hydraulic systems. The F-16 is a good example of their efficiency since they make external radiators unnecessary. This technique is very old news. (BTW one reason for coloring hydraulic fluid is so that dilution is readily apparent in the reservior sight glass. The next step is sniffing a sample for fuel leaking from a cracked exchanger.)

  76. Well duh, simple solution. by Alsee · · Score: 2

    how to dissipate 900 kilowatts of heat

    That's easy. Screw the 100 kilowatts of laser, just nail them with a 900 kilowatts heat ray.

    -

    --
    - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
  77. So, how long will it be, by Hawthorne01 · · Score: 1
    until we hear a preflight briefing like this:

    "The Iraqi biochemical weapons factory is ray-shielded, so you'll have to use proton torpedoes."

    --
    "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."
  78. Ohohohoh yes... by silvaran · · Score: 3, Interesting

    Star Trek, here we come... Mr Worf, arm phasers!

    I think the best part about a country having powerful weapons is their ability to NOT use them. Keeps evil powers in check (of course, evil is a subjective term, but anyways...). Same with nuclear weapons. Einstein basically told U.S. representatives, "yes, splitting atoms will work, but don't do it. It has disasterous consequences." Well, they didn't exactly listen. But I hope the ability to develop new weapons comes with the mindset to not use them.

    I would prefer to see these laser weapons go from fighter jets to medical surgery. Imagine the medical uses for this. Small, precise cuts, no sterilization necessary.

    1. Re:Ohohohoh yes... by Anonymous Coward · · Score: 0

      Medical surgery with lasers? - its been around for awhile buddy

    2. Re:Ohohohoh yes... by silvaran · · Score: 2

      Even the ability to cut flesh? I know they can reduce broken capillaries by frying them with a red laser, but can they also do cuts?

    3. Re:Ohohohoh yes... by Anonymous Coward · · Score: 0

      Yeah, we all know the US has a long and proud history of developing nasty weapons and not using them. We'd never drop a defoliant on a foreign nation, potentially endangering our own troops, and we'd never inject bioligical or radiactive contaminants into unsuspecting citizens for research purposes. We'd never drop an immensely powerful bomb onto a civilian population just to end a war. And of course we'd never use precision bombing technologies and stealth in concert to utterly decimate an opponent's ability to wage war, because it's just immoral to use technologically advanced weaponry to your advantage!

      So of course you are right, we won't ever use this laser.

      I hope by now the irony is obvious.

    4. Re:Ohohohoh yes... by smithmc · · Score: 1

      Same with nuclear weapons. Einstein basically told U.S. representatives, "yes, splitting atoms will work, but don't do it. It has disasterous consequences."

      Uh, IIRC Einstein urged the US government to start working on the Bomb, the sooner the better, so that the Nazis wouldn't get there first.

      --
      Downmodding is the refuge of the weak. Don't downmod, make a better argument!
  79. focus by Anonymous Coward · · Score: 0

    Actually, the more difficult problem is keeping the laser focused due to the turbulent boundary layer near the surface of the aircraft. Regardless of how powerful the laser is, if it is not focused, it will not be destructive. All the swirls and eddies of the air flow across the aperture for the laser distort, and therefore defocus the beam.

    Actively sensing the state of the flow in order to correct for this is a major challenge from a feedback controls perspective.

  80. hold on just a cotton pickin' minute by Anonymous Coward · · Score: 0

    Doesn't this new toy violate the Geneva Convention?
    Aren't there provisions against blinding weapons?!!!

    1. Re:hold on just a cotton pickin' minute by Anonymous Coward · · Score: 0

      did you even read the past 50 posts regarding blinding with lasers or are you just an idiotic, eurocunt?

  81. how about a... by BurKaZoiD · · Score: 1

    ...really, really big heatsink/dual fan combo?!? It'll work, dammit!

  82. Doubt about 100kw laser on aircraft by Anonymous Coward · · Score: 0

    A 100 kw laser seems ver doubtful.

    Consider ... when I was undergoing major surgery, under local anesthesia, during part of the procedure a medical laser was used. I asked the doctor how much power his laser output. His answer: I usually run about 5 watts, sometimes as high as 10 watts. Its capable of running up to 60 watts. He then said, "See that hole burned in the concrete wall?" of the surgery center, about a dozen feet away. I looked up. That happened when the service technician accidently operated the laser at the 60 watt setting and aimed it at the wall.

    Unless the surgeon was putting one over on me, it does not seem to take a huge amount of power for a surgical laser to burn tissue, or for that matter, a concrete wall. It is a highly focused beam, of course.

    A 100 kw laser seems like (bad pun) overkill. Besides, generating a 100kw worth of electricity is a bit of issue in an aircraft, as well as dissapating a huge amount of excess heat from doing that.

    Seems doubtful to me.

    But then, perhaps this started from a misquote in the media. Just last week, a Wall Street Journal report wrote that hair dryers run at "18 watts" (She should have said 1,800 watts). But you get the idea.

  83. Pass out the idiot awards... by QwkHyenA · · Score: 2
    You'd think that we'd learned from our mistakes. When the ABL system came out the first thing the enemy did was to CHROME all their missiles. Guess someone forgot that lesson...Oh well. Just taxpayer money..

    --
    LFS. Have you built your system today?
    1. Re:Pass out the idiot awards... by blincoln · · Score: 1

      I am unable to find a single reference to chromed missiles online, other than this post.
      Anybody want to help me out? My personal feeling is that it's unlikely, given that the ABL isn't even done yet.

      --
      "...always new atoms but always doing the same dance, remembering what the dance was yesterday." -Richard Feynman
    2. Re:Pass out the idiot awards... by Anonymous Coward · · Score: 0

      I doubt chrome would be much more effective than aluminum or steel. Certainly to within a factor of 2 they absorb a comparable amount of radiation.

      Painting your missiles black of course is not recommended.

    3. Re:Pass out the idiot awards... by Anonymous Coward · · Score: 1, Informative

      Chromed missiles will not help for very high energy densities. The "chromed" material will suffer rapid heating, and burn out. (due to ohmic heating) This is a real problem for any high powered laser systems, as it means you can not use standard mirrors. The way around this is to use dielectric mirrors, and some sort of cooling system (usually water). Dielectric mirrors work only for specific wavelength of light, and specific angle of incidence, and thus can not possibly be used to help protect missiles. (But are good for constructing laser cavities.)

      The energy densities for these laser systems should be sufficiently high if the active optics work as advertised.

    4. Re:Pass out the idiot awards... by PierceLabs · · Score: 1

      Not sure how chroming the missles really helps. The laser will still burn through chrome just like anything else - just possibly at a slower rate.

  84. Where to get ideas for cooling. by EvilMal · · Score: 1

    Look to the people who make heat sinks for Athlons.

  85. Shouldn't be a problem... by schlach · · Score: 2

    A med-laser? What's that, 5 heat per turn?

    The XL engine alone has 10 heat sinks, enough to mount two of those beasts... ; )

    </obligatory MechWarrior reference>

  86. Another toy for the bloated JSF by Theatetus · · Score: 1

    Sigh... I've been watching DoD pour money down these stupid projects for years now. While the Army has been chasing ridiculous mega-howitzers and us dumb jarheads have been forgetting to check the hydraulics on our Ospreys, we've managed to procure a strike fighter that doesn't satisfy any branch's needs.

    There's a strange doublespeak going on in military procurement (yeah, I know, what else is new? But this is more than usual): OT1H, everybody is supposed to be stripping down for the "new wars" we'll be fighting -- the Army is re-strengthening the regiment; the Corps is retasking the brigade -- OTOH, we're still purchasing large, centrally maintained, slow, high-tech "warfighting solutions" that were really only supposed to prove our phalli were bigger than the Soviets'.

    It makes a little more sense when you remember that procurement for all these systems began ~15 years ago, when it looked like JSFs and 200mm howitzers and Ospreys were a good idea (then again, a non-crashing Osprey would probably be great for brushfire deployments).

    But regardless, every dollar that gets spent on Operation Crossbow Redux and other toys is money that doesn't get spent training soldiers how to comb Himalayan caves for crippled one-eyed fanatics on dialysis or Marines how to spot suicide bombers paddling towards battleships in stolen Zodiac boats. I know Marines who still have Korean war-surplus deuce gear... though at least they finally updated last year the 1969 vintage camouflage I mucked around in my whole tour.

    Another example of why our decades-long military procurement process is broken.

    --
    All's true that is mistrusted
    1. Re:Another toy for the bloated JSF by ryantate · · Score: 2

      Right, a STOVL strike fighter is a waste in the new era of low intensity conflicts and rapid deployment.

      Because air power was not an absolutely critical factor in winning the war against the Taliban with fewer than *200* U.S. troops on the ground in Afghanistan at any one time.

      You should really check out the Frontline special on that war, in particular the part where one of the spec-ops soldiers says his team didn't really win over the warlords they were working with until they pointed lasers at some Taliban strongholds and made them go away (with Paveways or somesuch).

      Give me a break. The JSF will be able to operate from very, very short landing strips in the middle of nowhere and deliver the sort of smart munitions that have become a critical part of modern LICs -- and more (eg the laser).

      The JSF hasn't reached its final form, much less deployed. How can you say it won't work? Did anyone predit the F-4 Phantom II would be so useful to all branches, or that the UH-1 would, or the A-4 (navy/mc/israel), or the FA-18 (navy/mc/australia/canada/etc), or that the British would retake the Falklands using only Harriers?

  87. Re:hmmm... Yea why not try being nice? by Anonymous Coward · · Score: 0

    (* Or what about sending over some real money to be used for education? *)

    Yeah right. Like the Taliban School of Terror.

  88. Star Drek my ass... by Anonymous Coward · · Score: 0

    The gun systems on the Comanche worked exactly the same way.

    Prior art, bitch.

  89. three words come to mind by jeko · · Score: 1

    Thermal. Shutdown. Initiated.

    --
    He put his boots up on the table and made a face. "The sig," he smirked. "You can waste your life in search of the sig."
  90. Not all THAT much heat. by Ungrounded+Lightning · · Score: 2

    Thats a lot of heat!

    900 Kw? That's only about 1200 horsepower.

    I wonder if they could dump it into the engine intake air, for a boost? Or just wrap an extra turbopump around a radiator to get an extra couple hundred horses worth of thrust (and a free fan for the radiator) whenever the laser fires.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    1. Re:Not all THAT much heat. by Ungrounded+Lightning · · Score: 3, Insightful

      ... Or just boil some water and vent the steam. 900 Kw isn't much when it's not continuous, and boiling water takes a LOT of energy.

      --
      Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    2. Re:Not all THAT much heat. by Anonymous Coward · · Score: 0

      Yeah, but water is heavy and would run out and need to be refilled. Aerospace engineers _hate_ weight more than anything (including enemy aerospace engineers).

      Hey, why don't we just save the actual design, construction, flight, and maint. of these multi-billion USD fighters and just invite the russian engineers to play ours on a special edition of "Aerospace Engineering Jeopardy" -- winner takes Iraq...

      G

    3. Re:Not all THAT much heat. by cheezehead · · Score: 1

      Vent the steam. The F-35 is suppose to be stealthy. Leaving a con trail of vented steam does not help the stealth characteristics.

      Furthermore, as an AC pointed out, these aerospace guys and completely and utterly paranoid about weight. I have worked on an aerospace program where a dual processor system was considered for the on-board computer. One of the arguments against the second processor was its weight (and the extra weigth to the power supply and heat sinks)! I don't blame you if you don't believe me, I could hardly believe it myself...

      --

      MSN 8: Now Microsoft even has bugs in their ad campaigns.

    4. Re:Not all THAT much heat. by Ungrounded+Lightning · · Score: 2

      Yeah, but water is heavy and would run out and need to be refilled.

      So does the fuel for the laser - or the engines. It's just another tank (and a small one) to be filled. (If the laser is chemically-pumped you could include the cooling water in the fuel canister and reload just like you would a machine gun or missile pod.)

      Aerospace engineers _hate_ weight more than anything (including enemy aerospace engineers).

      Ablative cooling - in the form of boiling water - has one of the highest cooling-to-weight ratios of any cooling system.

      --
      Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  91. surgical Vs aircraft laser by phorm · · Score: 1

    The surgical laser may have done this, but it would have been at very close range. You have to remember that the aircraft laser would be operating over distances of 6 miles. That's a lot farther than the surgical, and despite laser focus, probably still a certain margin for losing power. If they want to melt tanks/troops from high altitudes at a distance, they'll need a little more than a high-power surgical laser.

  92. whatever happened to international law? by Anonymous Coward · · Score: 1, Informative

    RESTRICTIONS ON THE USE OF CERTAIN CONVENTIONAL WEAPONS.

    Plese read this:

    http://www.unog.ch/frames/disarm/distreat/ccwpro t4 .pdf

    Does anyone give a F#$@ about this?

    1. Re:whatever happened to international law? by Ozymandias_KoK · · Score: 1

      Whoever modded this up should read the damn link. The 3rd Article specifically exempts blinding as a side effect. Read the article, or the myriad of other postings that mention this.

  93. intyernational treaty by JDizzy · · Score: 3, Informative

    Usage of these weapons is actually restricted by international treaty. The reason is that high intensity light systems could be used to permanently blind the foot soldiers, and that is considered unsportsman like warfare. Sorta like the way nukes are considered unsportsman like too! But lasers, like any other bright light, does't just kill people. They can blind them, and permanently too. That is considered to be off limites. Now melting the armor on a vehicle is fair game, and if you happen to be looking in the laser and manage to not get your skin instantly burned (not likely), but you go blind; your fair game cuz you were sitting on an legitimate target (the armor vehicle). But swooping down on populated areas, and then sweaping the crowded areas with bright lights is bad.

    The treaty was a bit unclear, and unfourtunatly I don't have the deatials, but as I recall it might be offlimites to use the laser to blind enemy pilots too. As in shining the beam inot he cockpit of the enemy jet! I guess it depends ont he situation, and the combat senarios.... but we are realyl treading new ground here!

    --
    It isn't a lie if you belive it.
    1. Re:intyernational treaty by colenski · · Score: 1

      tom clancy did it in debt of honor i think, they used a cia team in japan to bring down a civilian airliner with a big honkin deer light maybe i am giving al Qaida ideas as we speak lol

    2. Re:intyernational treaty by Vinum · · Score: 1

      > The treaty was a bit unclear, and unfourtunatly I don't have the deatials,

      Which is why...

      A) You should not write about things you do not know about.

      B) Read all of the 500 posts above speaking about this.

    3. Re:intyernational treaty by GooberToo · · Score: 2

      Ahh...no, the treaty does not make sure a weapon illegal. It makes it illegal to use them against people, not against vehicles and equipment. Just like you're not supposed to use .50 cal and larger against people either. They are used to take out equipment. Sadly, many soldiers seem to be in the line of fire when the rifle in their hand becomes a target or such weapons. ;)

    4. Re:intyernational treaty by Ozymandias_KoK · · Score: 1

      The .50 cal is designed as an anti-personnel and light anti-armor weapon. There is no prohibition against shooting people with it. You fell victim to an oft-repeated but incorrect statement. FWIW, I'd like to meet the shithouse lawyer who originally stated that, and put a thumb-sized projectile through his ignorant skull. :)

    5. Re:intyernational treaty by GooberToo · · Score: 2

      Hmmm. I've never heard that it was a misunderstanding before. Have anything to back it up with?

      Even the .50 cal sniper rifles are designated as anti-armor/equipment per the several friends I have in the military and brief assocaition with a seal sniper. In fact, his job during the Gulf War was to use his .50 cal rifle to put holes in boat motors. Having said that, I have no doubt that he's use his .50 against people given the chance.

      I can only assume that we're talking about the difference between the treaty and practical application. Not sure what to tell you otherwise.

    6. Re:intyernational treaty by Ozymandias_KoK · · Score: 1

      Didn't say it didn't work wonders for equipment. :) If it was against some treaty, I'd like to see the reference that disqualifies it -- hearsay don't count. Aside from that, I'd say I remember shooting at lots of man-silhouttes out on the range, with vehicles thrown in at the longer ranges. I never saw any LBE, rucksacks, nor individual weapons for us to shoot at. :) You might find some of the FM useful here as well. Also, read the description of ball ammo in the ammunition section.

      http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/23 -6 5/ch6.htm#ch6

    7. Re:intyernational treaty by Ozymandias_KoK · · Score: 1

      http://www.jagcnet.army.mil/JAGCNETInternet/Homepa ges/AC/TJAGSAWeb.nsf/8f7edfd448e0ec6c8525694b0064b a51/ad1ed00f7eb501a585256a41005e2848/$FILE/Ch%2047 .pdf

      Also of interest.

  94. seriously though by Anonymous Coward · · Score: 0

    why not just water cool the laser? have a continous flow of water like they do on industrial laser, the h2o could easily be cooled through the ram intake at speeds of a couple hundred mph.. just use thin copper pipes...

    1. Re:seriously though by foobar104 · · Score: 2

      Because water is heavy. Planes are best when light.

  95. Re:Sundiver - using a laser to dissipate heat by Anonymous Coward · · Score: 0

    How superefficient does it need to be?
    All nuclear powerplants are basically steam engines.

    This could be a solar steam engine, where the steam is driving a series of turbines that power the laser.

    I guess it depends how close to the sun they're getting...

  96. rocket engines and heat by lingqi · · Score: 2

    conversely, If you look closely at rocket nozzles, you will see rings abound. these rings carry liquid O2 / H2 and heat them up (via the exhaust) before the enter the combustion chamber.

    (back ot the subject)

    as far as the laser is concerned, automobiles routinely rid themselves of that much heat via conventional radiators. I do not see this as a *big* problem, especially considering the atmosphere is about -40 where the aircraft operates. (granted, at a high mach the aircraft heats up due to drag -- in fact SR11 _extends_ 11 inches due to this heat!) -- to back up my claims: a gasoline engine is usually ~20% efficient. with a shaft output of 300HP (your regular sports car) your radiator / exhaust gets rid of ~ 1200HP of heat, which translates to just around 900kw.

    --

    My life in the land of the rising sun.

    1. Re:rocket engines and heat by Mishra2002 · · Score: 1

      Actually the O2 and H2 are cooling the rocket nozzle. You don't need to heat up the fuels, you need to keep the bell from melting.
      -Mishra

  97. Thats IT! by Anonymous Coward · · Score: 0

    Use a sterling engine.

    oh wait thats a dumb idea.

  98. Re:A sophisticated way of relating to others? by Vinum · · Score: 1

    > You can't negotiate with people who want nothing more than to see you dead.

    Yup, that is why divorce trials are such a bitch. :)

  99. heat == energy by JDizzy · · Score: 2

    Now I might be a bit of a conservative scientist, but it seems to me in other situatiosn the chance to convert that heat energy into tangabel other forms of energy would be a good oportunity. For example, the heat could be used to warm he jet fuel just prior to it's insertion into the combustion chamber, thus increasing its efficiency of the combustion. Warm fuel burns more efficient than cold fuel!

    There also exist gell packs that can absorb heat and convert it to electrical power. Not that the JFS is in short supply of electricity, with its turbo jet engines spinning shafts that then connect to static generators... but wouldn't it be possible to recycle some of the spent power back into the laser?

    If heat is such a problem, it would seem to me the laser could only be used in shorts bursts. Like less than a second, and no more than 1-1/2 second.

    Not to sound harsh, or critical... but 100 kilo-watts of laser isn't very impressive either. The fun lasers are in the giga-watt range. High megawatt, and gigawatt lasers are used for welding, so I don't see this being much use except to maybe disable the sensor systems, or blind the enemy troops. In fact, I doubt 100 kilowatt is the real spec being used. I would venture that a much more powerfull, and secret, version is being developed.

    The best place to stick a laser is on C41 type plane. In other words a big plane that coudl house multiple laser mirrors, and not have to worry about the heat issues sicne they coudl just pass some of the thin air over the heat exchangers. That woudl be a good replacment for the giant gattlin guns used on the place, not to mention replacing all the ammo they need to carry. Laseres, after all, are very reusable!

    --
    It isn't a lie if you belive it.
  100. I wonder... by Anonymous Coward · · Score: 0

    I wonder how they're going to avoid friendly fire and by-stander hits. A laser will travel indefinately. If you miss your target, it's going to keep on going until it hits SOMETHING, be it a friendly tank, personnel, a forest, a city or innocent villagers.

    1. Re:I wonder... by foobar104 · · Score: 2

      A laser will travel indefinately. If you miss your target, it's going to keep on going until it hits SOMETHING....

      Um. Believe it or not, we have the same problem with missiles. If a missile misses, it just keeps going until it finds something to run into.

      Strangely enough, we keep using them.

    2. Re:I wonder... by El+Puerco+Loco · · Score: 2

      Actually, missiles self destruct at a predetermined range if they miss the target.

    3. Re:I wonder... by Mishra2002 · · Score: 1

      Yes but eventually the laser will dissapate in the atmosphere. The odds of acidentally hitting something else at 30,000ft is not so good. I think it'll be ok.
      -Mishra

  101. Double-ended sword by goodmanj · · Score: 2, Funny
    So let's get this straight: this thing kills enemy fighters by delivering 100 KW of heat. Meanwhile, it delivers 900 KW of heat to the plane firing it.

    It's like a gun that shoots nine bullets backward for every bullet it shoots forward.

    Ah, you say, but they'll design the fighter to deal with the heat load. Yes, well, you could wear a bulletproof vest while using the nine-bullets-backward gun; that still doesn't make it a good idea.

    There's no denying that lasers are more interesting than bullets and missiles, but I've seen no evidence that they're more useful.

    1. Re:Double-ended sword by foobar104 · · Score: 2

      So let's get this straight: this thing kills enemy fighters by delivering 100 KW of heat.

      Probably not. Missiles like the AIM-120 are better for this. Especially when you couple the range of the AMRAAM (classified, but really far) with the power of the radar systems on the F-35, you have a first look, first shot, first kill system. In other words, the enemy aircraft is dead before he can even see you on his radar.

      This weapon will be better suited to killing ground targets, like radar installations, and possibly to killing inbound AA or SA missiles. It doesn't take that much power, in the absolute sense, to kill either of those type of targets.

    2. Re:Double-ended sword by Filarion · · Score: 1

      as I recall from the earlier article, the thing would mainly blind pilots/personnel (which comes with some legal problems) and ignite fuel tanks. The thing is, once the system is working it's a lot cheaper than any projectile weapon. Using a million-dollar Maverick to take out a truck convoy isn't too economic.

      --
      --[Nothing important]--
    3. Re:Double-ended sword by MadSwede · · Score: 1
      Probably not. Missiles like the AIM-120 are better for this. Especially when you couple the range of the AMRAAM (classified, but really far) with the power of the radar systems on the F-35, you have a first look, first shot, first kill system. In other words, the enemy aircraft is dead before he can even see you on his radar.
      Exact specs may be classified, but the AMRAAM's range is roughly 30 miles. Not what I'd call really far, in aerial combat terms. Now, the Phoenix AAM has a range of around 110 miles. That's impressive :)
    4. Re:Double-ended sword by foobar104 · · Score: 2

      Um. No. The range of the AIM-120B and AIM-120C is at least 30 miles. That's the unclassified specification. The P3I will further increase that range substantially through the use of improved propulsion systems.

      I've worked on some flight simulator code that described the capabilities and in-flight characteristics of the AIM-120B. That code is classified Secret, but I can tell you that the actual specs of the missile describe a range somewhat in excess of 30 miles.

      But the most important thing about AMRAAM is its size. The AIM-54 can only be deployed on the F-14, while the AIM-120 can be carried by the F-15, F-16, F-18, F-22, and F-35. (C variant only on F-22 and F-35 internal carriages.)

  102. Re:Star Trek? Huh? by Anonymous Coward · · Score: 0

    "Real Genius." Rent it. Also, now available on DVD.

  103. What I want to know: by juju_ben · · Score: 1

    What kind of rate of fire and target acquisition rate will there be? If they're sufficiently good, this might end up as a point defense weapon(IE: a weapon designed to shoot down incoming missiles) as well.

    --
    -- juju_ben. "You dance just like the angels dancing on the head of the pin jabbed into my minds eye."
  104. Re:where do you get the power from? qjkx by Anonymous Coward · · Score: 0

    Yes, you are right. And if you want a very intense laser, you use a nuclear bomb to pump it. This was part of Reagan's "Star Wars" program.

  105. Re:A sophisticated way of relating to others? by Anonymous Coward · · Score: 0

    Dude, all I want to do right now is fucking kill you.

  106. Bose-Einstein Condensate by rossy · · Score: 1

    Another solution would be to store a small
    amount of super cooled Beer stored as a Bose-Einstein Condensate. (No matter that they haven't
    yet cooled beer to a nano-kelvin yet..)
    After you shoot the laser beam at the bad guys,
    the heat is shunted to the Bose Einstein Condensate
    which becomes Cold Beer!
    It's Miller Time!

    --
    Ross Youngblood
  107. Re:A sophisticated way of relating to others? by noewun · · Score: 3, Insightful
    Get this through your head.

    Christianity is a religion of violence, historically spread through military conquest. The Catholic Church basically offers two choices for the "pagan:" conversion or death.

    Jesus Christ can now take his place beside Charles Manson, another leader of a dangerous and bloody cult.

    Jesus (and Mohammed) your grasp of religious history is awful. Islam's history of violence pales in comparison to the millions killed in the various heresies, pogroms and Inquisitions the Holy Roman Apolostic Cathlolic Church has either directed or tacitly supported since the Council of Nicaea. Men were burned alive at the stake for merely saying that Jesus may have been part human and part divine; entire cities were sacked and burned because the inhabitants dared to have a different definition of the Trinity than those in power. The rise of Islamic Fundamentalism dates from the late 1700s. The rise of Christian Fundamentalism can be dated from the end of the Roman Empire, when the academies of the ploytheistic religions were forced to shut down.

    All religions have been turned to the uses of power and violence. Singling out Islam is part of the problem.

    --
    I am a believer of momentum and curves.
  108. Okay, some issues. by Anonymous Coward · · Score: 0
    If I recall, this sort of laser is a COIL, or chemical oxygen-iodine laser. %10 efficient, lots of waste heat, but you don't need to fly several tons of batteries and capacitors to use it, like you would if you used a 1 inch square diode laser array (several companies put out models that can emit 3900 watts of IR @ %50 efficiency). Add liquids, get laser and heat.


    But wait, just six months ago, didn't slashdot have a posting about Borealis, whose flagship product (CoolChips) was just tested by Boeing and was shown to be real? MMMMM.. 900 KW of heat, recovered at, oh, %50.. 450kw of power, with which one could do just about anything you like (diode laser array.. plasma manipulation of airflow.. pick something).

  109. mwuhahahaha by dirvish · · Score: 1

    I am going to build a giant Laser Beam !

  110. 900kw of heat? by Perdo · · Score: 3, Interesting

    On a vehicle that uses heated gas expansion for propulsion (fancy name for a jet), It seems like 900kw of extra heat could be used in place of an afterburner.

    Just find a fluid that does a phase change efficiently between the melting temperature of the laser's mechanism and say just a little hotter than the jet's exaust plume.

    Liquid boron or sulfer ought to do the trick.

    --

    If voting were effective, it would be illegal by now.

  111. Re:A sophisticated way of relating to others? by Anonymous Coward · · Score: 0

    Yes, but the christians seem to have grown a bit in the last few thousand years. They dont seem to be killing people in the name of religion anymore, like the muslims are.

    Now, the priests just rape little boys..... wait, what was the point I was trying to make?

  112. 2/3 correct by bcaulf · · Score: 1

    Reflective material for traffic signs has pits shaped like the corner of a cube. 90-degree angles, but three of them instead of two. So, any incoming light makes three bounces and exits more or less exactly back in the same direction from which it came.

    The same stuff is used for front projection visual effects as first seen in 2001. A half silvered mirror bounces a projected movie onto the scene, on-axis with the camera. The reflective material bounces the movie back into the camera aperture.

  113. Re:Sundiver - using a laser to dissipate heat by David+Gould · · Score: 2

    Right, except Brin seems to have this notion that whenever a large laser is fired, it just sorta sucks heat out of the surrounding air to power itself, even without being set up with any special heat-pump apparatus.

    True, in Sundiver, he made it sound like there was a special heat-pump setup (though I don't recall him describing it in enough detail to be sure), but in Heaven's Reach, the terrans rediscover the same trick a few centuries later to get out of a vaguely similar situation (and it's strongly suggested that the Galactics hadn't come across it in a billion years). This time, he definitely implies that the laser is sucking up ambient heat, because the brainstorm follows a character saying/thinking something like "wow, that communication laser sure draws a lot of power -- you can feel the room temperature drop a few degrees when you turn it on." Uh, sure, dude.

    --
    David Gould
    main(i){putchar(340056100>>(i-1)*5&31|!!(i<6)<< 6)&&main(++i);}
  114. Whale penises and design by No+Such+Agency · · Score: 2

    Well, it's interesting you should mention whale penises. They "emerge to fire" for exactly the same reasons that this turret would. If they were sticking out all the time, they'd disrupt the animal's streamlined shape, and also could get damaged. Funny how effective natural selection is, really...

    --
    Freedom: "I won't!"
  115. Re:A sophisticated way of relating to others? by woogieoogieboogie · · Score: 2, Insightful

    You are very sadly informed. Read the Old Testament. There are countless references to the Jews killing entire towns. that is everyone, men, women and children. And they utterly destroyed all that was in the city, both man and woman, young and old, and ox, and sheep, and ass, with the edge of the sword . . . (Joshua 6:21) Then Horam, king of Gezer, came to help Lachish; and Joshua smote him and all his people, until he had left him none remaining. And they took Eglon, and smote it with the edge of the sword, and all the souls that were therein. (Joshua 10:32-34) And they took Hebron, and smote it with the edge of the sword, and the king thereof, and all the cities thereof, and the souls that were therein; he left none remaining. (Joshua 10:37) For the indignation of the Lord is upon all nations, and His fury upon all their armies: he hath utterly destroyed them, He hath delivered them to the slaughter. Their slain also shall be cast out, and their stink shall come up out of their carcasses, and the mountains shall be melted in their blood. (Isaiah 34:2-3) But in the cities of these peoples that the Lord your God gives you for an inheritance, you shall save alive nothing that breathes, (Deuteronomy 20:16) yeah this is a group of people bent on peace, they worship genocide. And FYI, the state of Israel was forced upon the Arabs. It was created without their consent and against their will. But hell, it worked with the Africans, American Indians and dozens of other non industrialized people and they all accpeted their fate, why are those pesky arabs whining about.

    --
    ... Governments are instituted among Men, deriving their just Powers from the Consent of the Governed...
  116. Call me a dummy... by Goonie · · Score: 2
    But I thought you wanted *cool* air going into an engine, so that when it mixes with fuel, burns, and expands, it expands more and thus you get more thrust.

    Or do I have it wrong here?

    --

    Any sufficiently advanced technology is indistinguishable from a rigged demo
    --Andy Finkel (J. Klass?)
  117. It's like giving someone a nerf gun. by HeX86 · · Score: 1

    It's like giving someone a nerf gun incase they decide to turn on you.

  118. Re:A sophisticated way of relating to others? by swillden · · Score: 3, Insightful

    Islam is a religion of violence, historically spread through military conquest. The Koran basically offers two choices for the "infidel:" conversion or death.

    Dead wrong.

    Go find a copy of the Koran (hint, it's on-line several places) and find me a single passage that says unbelievers must be killed. Guess what: it ain't in there.

    Quite the opposite. What you'll find is lots of statements about how Allah will punish the unbelievers, and quite a few that tell the believers to take care not to incite the unbelievers, but to live alongside them in peace, unless the unbelievers try to stop the Muslims from worshipping Allah.

    And history bears this out as well. Historically, Islam is a far less violent religion than Christianity. For example, consider Moorish Spain. Although the conquest of Spain was violent (that being the accepted manner of expanding your territory), the Muslims at the time did *not* force the Christians and Jews to convert. In fact, from the point of view of the Jews, the Moorish occupation was a golden age, one of the few times that they were pretty much completely free of oppression. Not only were they not killed, or forced to convert, both Jews and Christians managed to gain high ranks within the government.

    When the Christians finally managed to eject the Moors, *they* gave all non-believers three choices: convert, leave or die. And they often neglected to offer the second option. You may have heard of a little bash called the "Spanish Inquisition".

    I'm not slamming Christianity; I'm Christian. I'm making the point that the teachings of Islam are *not* inherently violent. Everyone knows that Christ preached turning the other cheek, and yet supposedly Christian people have repeatedly perverted his doctrine. Islam teaches that violence against another man is only permitted when that man is trying to stop you from following Islam.

    There are a some violent and despicable people in the world who happen to be Muslims and have chosen to use the rhetoric of "Jihad" (specifically, the lesser Jihad, which is the fight for freedom from religious oppression) to justify their hatred and their murders. The term doesn't fit the application, but that has never bothered propagandists.

    You can't negotiate with people who want nothing more than to see you dead.

    True, but keep in mind that the number of Muslims who feel that way about Israel is small relative to the Muslim population. Don't try to smear all Muslims with that same tar. Most of the Arab world has sympathy for their Palestinian brethren, but that's a far cry from wanting to see all Israelis (or all non-believers) dead.

    As for the Israel/Palestine conflict, neither side is totally right, and neither side is totally wrong. The Palestinians have a legitimate beef about wanting their land back, but they should have figured out by now that they're not going to get all of it back and been content to accept some of the numerous offers to share. Their use of terror tactics is despicable in the extreme. On the Israeli side, their deep hatred ensures that there will never be any kind of peaceful settlement, and they're guilty of frequently applying excessive and indiscriminate force. Israel was the embattled underdog, trying to pull something good together after thousands of years of oppression but they've turned into a bully that causes many of their own problems by overreacting.

    In short, it's a mess caused by hatred and selfishness on both sides, and although the debate is often wrapped in religious clothes, the core problems are racism and land, not doctrine.

    --
    Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  119. its so ironic... by cheekyboy · · Score: 1, Insightful

    isnt it ironic, that the israelies are treating the arabs the same way the germans treated the jews? You would think that the jews would be the ones with the utmost wisdom and knowledge and super forsight from history to know that what they should do is intermix, and be as one.

    Its all really quite sad, and to hell with it all, its their problem and not ours, and its up to them to fix it. Give the arabs a state, just like the world game the jews a state. If they cant understand it then they are as bad as AH. him self.

    Hey, just give a a few E's and LSD to every one and party one that would fix it all.

    --
    Liberty freedom are no1, not dicks in suits.
    1. Re:its so ironic... by Anonymous Coward · · Score: 0

      That irony is never mentioned in 6th grade social studies classes during the ever-so-important "racism week" of WWII Holocaust movie sessions. History-classes will teach us nothing.

    2. Re:its so ironic... by Gospodin · · Score: 1

      How the fsck did this get rated "Insightful?" It's complete and obvious blather. For starters, the Israelis aren't rounding up random Palestinians and gasing them to death. For another, the European Jews weren't constantly threatening to destroy the German nation and kill all the Germans, as the Arabs are doing and have done for decades.

      I suppose my comment will now get rated "Flamebait."

      --
      ...following the principles of Heisenburger's Uncertain Cat...
  120. NOT so funny by KM1 · · Score: 1

    There is a very good reason for the ban on weapons which intentionally blind soldiers and it is exactly as you say in your joke-it IS a humane ban.
    This kind of bans originally stem from the horrible scenes during the gas attacks during the first world war. During this time chlorine and mustard gas were used in and attempt to break the stalemate in the trench war. As a result large numbers of soliders who survived became crippled or blinded. A number of these solider had to stay blinded and with severe skin and lung damage among the dead in the battlefield before being found, many starved to death before they were found.
    Being blinded and left alone in a battlefield filled with enemy soliders, landmines, razorwire and many other threats will often be a death sentence. Compared to being killed instantly by a bomb being blinded without immediate rescue will often be the equivalent of a quick execution compared to torture followed by a random or slow death.
    All in all intientionally blinding weapons are not something a civlised society should use even on the few occasions when it is forced into war.
    Whether tihs affects the mentioned airplane is another matter.

  121. Easy... by Anonymous Coward · · Score: 1, Insightful

    "The problem? According to this Aviation Week article, Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat."

    All they need is an eximer frozen in it's excited state. It's like lasing a stick of dynamite.

    Very large power? Portable? Limited firing time? Unlimited range? All you'd need is a large spinning mirror and you could vaporize a human target from space.

  122. Simple Dr Watson by Pingo · · Score: 1

    Just dump the excess heat into the aircrafts fuel
    via a heat exchanger.

    Preheating of fuel gives a really awesome boost to the Jetengine. //Pingo

    --
    --- Linux or FreeBSD, it's like blondes or brunettes. I like both. ---
  123. Re:Uplift Saga uses frequency doubling by Anonymous Coward · · Score: 0



    I assume the technology is based on well understood
    nonliner optics where a laser can be pumped by a lower frequency beam. At high photon concentration ad double photon absorbtion event can take place where the photons are halft the wave length of the one required for single photon absorbtion. This is normally explained as one photon causing excition to a "virtual" very short lived state which can then absorb the second photon. Note it's still quantinized its just that
    most people don't know that the absorbtion frequencies are actually as set 1 1/2 1/4 etc.
    Ive never heard of the 1/4 absortion being triggered since that requires 4 photons to be absorbed almost simutanously. I do not know if higher frequences can be halved say double frequence absorbtion I suspect they can.

    Any after that long arguement ...
    Infrared is frequency doubled to visible light then dissipated via laser cooling.

  124. Pick off infantry troops one by one by Anonymous Coward · · Score: 0

    What's the point of using an F-35 to pick off infantry troups one by one?

    Well! Maybe this will answer that question!

  125. Violence begets ... peace by jgardn · · Score: 1

    The stuff you wrote above is pure nonsense. Here's my proof.

    How many countries did Japan invade before and during WWII? How many people did they torture, murder, experiment on? How many women did they rape until they bled to death?

    Now, ever since we took up the sword, and made it our business to kill as many Japanese as we could, and ever since we destroyed their navy, their colonies, and turned two of their industrial cities into smoking glass, how many countries have they invaded? How many people have they tortured and murdered and experimented on? How many women have they raped?

    In fact, today, wouldn't you rank Japan as one of the most peaceful societies in the world -- perhaps even more peaceful than the USA? Gee, I wonder why that is... Just 60 years ago, they were considered by all of their neighbors as blood-thirsty conquerors and barbarians. Now they are a peace-loving and kind nation. What happened? Violence happened, in an unprecedented scale.

    See, violence IS the answer in certain situations. It was the answer in the Revolutionary War, it was the answer in the Civil War, it was the answer in World War I and World War II, and it will be the answer to some of the world's worst problems in the future. Violence is also the answer to Al Qaeda, Saddam Husseim, and dare I mention it - Hamas and other Palestinian terrorists. Violence -- or the threat of it at least -- brought down the Berlin Wall, and violence is a force that brings North Korea to the tables, and is making China rethink its foreign policies.

    Ever since ancient times, man has known that you literally have to fight fire with fire. If a man is terrorizing someone, the best way to handle it is to kick the crap out of him, or to end his life. That is all still applicable today. You couldn't negotiate with bloodthirsty tyrants then, and you still can't today.

    --
    The radical sect of Islam would either see you dead or "reverted" to Islam.
  126. Baby-Burning and Molech by jgardn · · Score: 1

    You misunderstand the bible. Do you know who or what Molech is?

    Let me describe for those of you who don't know.

    Molech is a brass idol that is hollow inside. He has outstretched arms. You are supposed to build a fire inside until the entire statue becomes very hot. The way to worship Molech is then to take a baby, preferrably a male, and "pass it through" Molech. That means to put your baby on the searing brass. The baby then is burnt up into charcoal.

    There are other gods the natives worshipped, but Molech is the most disturbing.

    When God gave Moses and Joshua, and later leaders of the Israelites orders to murder and destroy whole cities, he did for the same reason he flooded the earth: they were beyond help.

    You can't convince someone who loves to burn his babies up to change his ways. If you can't change him, what chance does their children have of becoming much better than their parents?

    And so, you have to start over, with a clean slate.

    Remember, when the Israelites began to serve Molech and the other gods, God sent down disease, destruction, and ultimately brought the Babylonians in to remove them.

    Sounds fair to me. God didn't favor the Israelites because they had a cool name -- he liked them because they were a good people. They enjoyed raising their children and building farms, and they despised murder, rape, and baby-burning. When that all changed, God didn't seem to care whether they died or not. In fact, he encouraged foreign leaders to bring their armies down and purge the land from the Israelites.

    --
    The radical sect of Islam would either see you dead or "reverted" to Islam.
  127. General McArthur begets ... peace by Futurepower(R) · · Score: 2


    It seems to me that what you said is not proof, but it is interesting to think about.

    The situation with Japan was unusual, it seemed to me, because of General McArthur. He used his power to help Japan rebuild. (My father was one of the U.S. military people who helped in the re-construction.) Basically, General MacArthur was Japan's first democratic leader.

    Japan has been peaceful, not because of war, but because of an amazing amount of creative and intensive charity after the war. Also, the Japanese are culturally pre-disposed to accept one strong, fatherlike, leader.

    Notes from Google: General MacArthur, the founder of today's 'prosperous' Japan says "... he had achieved countless reforms such as educational reform, farmland reform, zaibatsu dissolution, dissolution militarism, promotion of democracy and tax reform tax reform as well as signing on battleship Missouri. It is no exaggeration to say that he was the founder of today's prosperous Japan."

    This article tells a little more: Japan Under American Occupation.

    The cultural disposition of the Japanese to accept an older leader helped them accept W. Edwards Deming, an American quality control expert. See History of Japan's Quality movement which says,

    "The quality movement in Japan began in 1946 with the U.S. Occupation Force's mission to revive and restructure Japan's communications equipment industry. General Douglas MacArthur was committed to public education through radio. Homer Sarasohn was recruited to spearhead the effort by repairing and installing equipment, making materials and parts available, restarting factories, establishing the equipment test laboratory (ETL), and setting rigid quality standards for products (Tsurumi 1990). Sarasohn recommended individuals for company presidencies, like Koji Kobayashi of NEC, and he established education for Japan's top executives in the management of quality. Furthermore, upon Sarasohn's return to the United States, he recommended W. Edwards Deming to provide a seminar in Japan on statistical quality control (SQC)."

    See also, Japan's Secret: W. Edwards Deming.

    As I said, the charity toward Japan after the war was extensive , amazingly so.

    Christianity should be given some credit here because the idea of being charitable to Japan apparently came from Christian principles. (This is not meant to be a religious statement. It is only a cultural statement.)

    The charity was even more remarkable because Japan had had a really, really rotten outbreak of mental illness that causes Japanese to be disliked in countries surrounding Japan even today. There were certainly many reasons why people would allow themselves to feel negative toward the Japanese.

  128. Re:A sophisticated way of relating to others? by jeko · · Score: 2, Insightful

    OK, we have now wandered far, far afield, but...

    A year ago, I would have agreed with you completely. In fact, your reply is so reasonable and lucid, I still have a hard time disagreeing with it.

    And I will agree that my reaction here is born more from emotion than logic. I teach at a college in Japan, where I watched the exultation of the Muslim community after 9/11. Maybe it was the assorted bomb threats that got phoned in to the registrar's office in Arabic-accented Japanese that pushed me over the edge. (It's a secular college that was founded by Christian missionaries long, long ago.)

    Having lived abroad for almost ten years now, and marrying a woman whose native language is not English, I've lost that subtle racism that most liberals, and I am one, have -- the idea that people born in the third world somehow have an excuse not to behave in a civilized fashion.

    Looking at my own history, my grandparents lived in Appalachia, without benefit of indoor plumbing or electricity. Possums formed a staple of their diet. Somehow, I don't recall them chanting in the streets for anyone's blood.

    France helped my country throw out the British, and they did it for purely selfish reasons. Without the French, it's entirely likely that Washington would not have survived. After 1776, France didn't stick around and send aid and workers to help us "nation build." With their purposes accomplished, they got out. You know what? I'm still grateful for the help. Left to our own devices, fractious and quarreling colonies somehow managed to have a meeting and come to an agreement about how to live together. We did it, France did it, England did it. Australia did it, India did it.. We're not unique. The list of people who have found themselves in chaos, had a meeting, made agreements and lived by them is quite a long one. When they do, we refer to it as a "civilization."

    Afghanistan could have done the same thing. We built the mujahadeen purely so the Soviets would have a thorn in their side, and then we left. Fine. There's not a reason in the world that the Afghani people couldn't have had a meeting and worked it out.

    Instead, they chose to run around the streets beating their women and staging public executions. They wasted time in pointless feuding and religious nonsense that threw away their one chance at a viable nation. They submitted to the rule of the Taliban, despite the fact that they had just ejected a far greater power, the Soviets.

    Currently, the provisional government of Afghanistan has a myriad of problems. No agriculture, no utilities, no infrastructure of any kind. They apparently can't do anything, but theyve somehow managed to reinstitute the Office of Vice. Once again, religious police walk the streets of Afghanistan making sure women wear their veils.

    Sure, Cletus, we ain't got no food, no water, no plumbin', but dammit, them wimmen are wearin' them veils.

    The original poster argues that this is somehow America's fault, that the 3,000 dead in New York deserved to die.

    Complete and utter bull. The Arabs are not the only people with grievances. If anyone should be bombing American cities, it should be the Cherokee and Lakotas. Somehow, I don't see the Native Americans doing anything more violent than holding sit-ins at Alcatraz. Furthermore, historical grievances do not excuse atrocities. If they did, then by all rights my family should start bombing London and assassinating anyone named "Campbell."

    But the Arabic world in general is hardly a charity case. They've been flooded with oil money for almost five decades now. A reasonable people would have taken the oil money and built prosperous nations.

    I still can't get over the fact that the first request of the Kuwaiti ruling family from the Army core of Engineers was to rebuild the royal palace, complete with solid-gold faucets, even before basic life-saving services had been restored.

    I'm sorry. Muslim behavior has pushed me over the edge on this one. The dancing in the streets after 9/11. The joy that I saw among the Muslims here at the sight of people jumping from windows. The utter and complete lack of condemnation from the Muslim community until only recently. The meeting in London last month "celebrating" 9/11 and vowing to bring England under Sharia law. The fact that the Daniel Pearl murder video is reported to be a best-seller in the Arabic world. The Palestinian infant dressed up as a suicide bomber. (I don't care if the black-oil aliens from the X-Files have taken over. There is no excuse for the babarism of teaching children to blow themselves up.)

    I look at the Middle East and I see Isreal, with no oil money but significant American support. I see a democracy with reasonable people who have gone from decimation to prosperity after WWII. I see Taiwan, with greater problems, accomplishing the same thing.

    Then I see the Arab countries, awash in oil money, ruled by feudal lords, stricken by poverty, beating their women, chanting in the streets for blood, supporting people whose main goal in life is the death of civilians.

    I use to make excuses for these people, but no longer. It's long past time for these people to grow up, let their women come out from under the rock, and step into the sunshine. It's time for the Muslim community to live like human beings and quit making excuses for the homicidal maniacs in their midst.

    Imagine the response from the pulpits across Christendom if Jerry Falwell had blown up the great Buddhist Temple in Nara, claiming he was following the Old Testment instruction to smash idols, claiming he was drawing vengeance for the thousands of martyred Christians here, including the American pilots who were vivisected just up the road from me in WWII. I'd begin every day here by saying: "Hi. I'm from America. I'm a Christian. Falwell is a monster. He's completely wrong." CNN would be one nonstop show of Christian ministers lining up to denounce him.

    I have yet to hear the same response from Islam. Bin Laden appears to be a popular hero in the Middle East, a modern-day psychotic bloody version of Robin Hood. I've heard a few qualified, mealy-mouthed responses from the Muslim community here in America about how "violence is not the best solution." What I have not heard is the shocked thundering raging denouncement and the commensurate police activity coming from Islam if the situation were truly what you say it is.

    I'm sorry, but the Muslim community has burned through their "benefit of the doubt." Until they start acting like civilized human beings, I'm not going to pretend that they are.

    --
    He put his boots up on the table and made a face. "The sig," he smirked. "You can waste your life in search of the sig."
  129. Re:A sophisticated way of relating to others? by lateralus_1024 · · Score: 1

    very well said, couldn't agree with you more.

    The fundamental issue in the Israel-Palestinian war is land. Not religion.

    The land in question was taken. There was no negotiation.

    --
    If you think /. comments are bad, check out Digg.
  130. Re:A sophisticated way of relating to others? by Anonymous Coward · · Score: 0

    As an American Christian, I whole heartedly concur with what you said. Islam has been defaced by a few so-called muslims and more-so from ignorant people on this board who are too lazy to understand what Islam and Koran teach. There is nothing but peaceful life lessons within the Koran. Anyone who tells you different either has an 8th grade reading comprehension level, or has not read a page of it.

  131. Steam and stealth. by Ungrounded+Lightning · · Score: 2

    Vent the steam. The F-35 is suppose to be stealthy. Leaving a con trail of vented steam does not help the stealth characteristics.

    Neither does a hundred killowatts of laser light. When the laser lights up you're not stealthy - unless you count blinding any light-sensitive sensors nearby as "stealth". When the laster ISN'T lit, you're not generating steam - except for a short time right after you turned it off. With the right design, "short" can be a matter of seconds.

    Meanwhile you're already venting a BUNCH of steam - the combustion product of the hydrogen in the jet fuel with the oxygen in the air. Dump a little extra water vapor in the exhaust (mixed with an equivalent amount of input air) and all you've done is slightly increase the amount of your exhaust and reduce the proportion of carbon and nitrogen oxides (of which your steam cooler produces zero, unlike your engines).

    You're not going to get rid of your "steam contrail" unless you turn off your engines. The flight characteristics of a fighter jet with no power have been compared unfavorably with those of a manhole cover.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  132. Heat dissipation by docbrown42 · · Score: 1

    According to this Aviation Week article, Lockheed Martin has to figure out how to dissipate 900 kilowatts of heat.

    Popcorn?

    Loook Ma! It's snowing!

    --
    Ed Wedig
    Graphic design services
    docbrown.net
  133. Re:A sophisticated way of relating to others? by Gospodin · · Score: 1

    Historically, Islam is a far less violent religion than Christianity. For example, consider Moorish Spain.

    OK, then, consider the Ottoman Empire. Christian churches and monasteries were regularly attacked, Christians forced to change their names to Turkish names, Christian children taken from their families as infants and converted into fanatic Muslim soldiers, Christians and Jews treated as second-class citizens. It was hardly a golden age for the Balkans.

    True, but keep in mind that the number of Muslims who feel that way about Israel is small relative to the Muslim population.

    I assume you have some sort of proof of this? I hear a consistent refrain from Arab Muslim news outlets that they won't rest until Israel and its inhabitants are no more. How are they, and I, expected to take this - as a practical joke?

    Note that I'm not a Christian (I'm a fence-sitting agnostic). However, when I compare the number of mainstream Christian bigwigs calling for the blood of Muslims (or Jews, or for that matter anybody) to the number of mainstream Muslim imams making the same calls, I can't help but notice that the data is pretty much entirely one-sided. How do you explain this?

    --
    ...following the principles of Heisenburger's Uncertain Cat...
  134. Lockheed Burger by Anonymous Coward · · Score: 0

    I find it hilarious that Lockheed Martin - at least on their site - positions it's world class hardware and totally lethal vehicle systems (such as the F-22, the JSF, and the F-117) as 'products'. I was looking for an order form and a credit card # line. Would you like a 100-KW laser with that?

  135. Re:A sophisticated way of relating to others? by swillden · · Score: 2

    Sorry for the very long delay in replying... I've been traveling and very busy. Rather than dashing off a reply in five minutes I thought it better to wait until I could answer thoroughly.

    OK, we have now wandered far, far afield, but...

    That's a slashdot tradition ;-)

    Awesome post, by the way. You made me think, which is always a good thing.

    Having lived abroad for almost ten years now, and marrying a woman whose native language is not English, I've lost that subtle racism that most liberals, and I am one, have -- the idea that people born in the third world somehow have an excuse not to behave in a civilized fashion.

    Just so we're clear on where we both stand, I'm a conservative, with strong libertarian leanings, driven primarily by the years I spent living outside of the U.S. (in Mexico).

    Possums formed a staple of their diet. Somehow, I don't recall them chanting in the streets for anyone's blood.

    Agreed, poverty is no justification for violence. That's an old liberal argument that holds no water whatsoever with me.

    After 1776, France didn't stick around and send aid and workers to help us "nation build." With their purposes accomplished, they got out.

    France really had nothing to offer us, and nothing to gain by helping us further. I think we have plenty to offer Afghanistan (more on that below) and I think we stand to benefit by helping.

    Afghanistan could have done the same thing. We built the mujahadeen purely so the Soviets would have a thorn in their side, and then we left. Fine. There's not a reason in the world that the Afghani people couldn't have had a meeting and worked it out ... [instead ] they submitted to the rule of the Taliban, despite the fact that they had just ejected a far greater power, the Soviets.

    Right. I'll go ahead and snip the rest of your examples about the Islamic countries' inability to establish stable and properous lives for themselves.

    I think there is a fundamental reason for their repeated and widespread failures, and that it *is* religious in origin: Islamic doctrine does not approve of separation of church and state. Personally, I think one of the most profound things Christ ever said was "Render unto Caesar that which is of Caesar and unto God that which is of God." That, plus his repeated affirmations that his "Kingdom is not of this world" provide the Christian scriptural basis of secular government.

    Clearly, religious government is fine if the leaders are righteous, benevolent and tolerant, but it becomes very bad when they're not, because a religious government cannot be questioned or criticized -- one does not question God. This, incidentally, is exactly where Europe was five hundred years ago -- God "chose" the King and the King was not to be questioned.

    By the way, as I understand it, this issue touches directly on the difference between Sunni and Shi'ite Muslims. Sunnis are generally considered by the west to be more peaceful and progressive, and Shi'ites are more hardline. The real, doctrinal, difference between the sects is their interpretation of the reliability of their leaders -- Shi'ites believe that their Imams are perfect and infallible, whereas Sunnis believe that they are men who may make small errors. Neither believe that their leaders can make large errors, however.

    the 3,000 dead in New York deserved to die... Complete and utter bull.

    Clearly. There is no justification for intentionally killing innocents.

    But the Arabic world in general is hardly a charity case. They've been flooded with oil money for almost five decades now.

    Parts of it, anyway. Afghanistan doesn't have any oil. But Turkey doesn't have much either, and they're building a reasonably decent country (and are rabid church/state separatists -- Turkish military officers are *required* to drink alcohol, for example).

    I'm sorry. Muslim behavior has pushed me over the edge on this one. The dancing in the streets after 9/11. The joy that I saw among the Muslims here at the sight of people jumping from windows. The utter and complete lack of jeko> condemnation from the Muslim community until only recently.

    Here I believe you're just factually wrong. The Muslim community *has* condemned the attacks; they did so immediately and strongly, and not just American Muslims. Even the radical, anti-American organizations did it (you can argue that they did so out of self-preservation, not sincerity, but the fact that they did publically condemn the attacks remains).

    A quick google search found this, this, and particularly this, among many others.

    One interesting quote:

    The US Consul General in Jerusalem reported that he has received a huge stack of faxes from Palestinians and Palestinian organizations expressing condolences, grief and solidarity. He himself was pained to see that the media chose to focus on the sensational images of a few Palestinians rejoicing.

    The fact that the Daniel Pearl murder video is reported to be a best-seller in the Arabic world.

    I'd be rather cautious about "facts" like this. What constitutes a best seller? Who counts the sales? Who reported it? What other factors might there be? The "Faces of Death" series of videos are rather popular in the U.S. as well.

    The Palestinian infant dressed up as a suicide bomber. (I don't care if the black-oil aliens from the X-Files have taken over. There is no excuse for the babarism of teaching children to blow themselves up.)

    Absolutely. Those parents are sick and twisted. However, the American parents who forced their children to drink cyanide-laced Kool-Aid were also sick and twisted. Bad people exist everywhere, but that doesn't mean that the majority of any people are bad.

    Imagine the response from the pulpits across Christendom if Jerry Falwell had blown up the great Buddhist Temple in Nara ... I have yet to hear the same response from Islam.

    That's the fault of the western news media (and apparently the Japanese media as well), not the fault of Islam. There have been people in the U.S. complaining that the Islamic leaders of the world haven't apologized for 9/11, and I think that is very misguided. Why should they apologize for what they didn't do?

    Stories I've read in various places have mentioned that many people in the middle east find the 9/11 attacks so horrifying that they simply cannot believe it was carried out by Muslims. Conspiracy theories blaming it on the Jews or saying that Bush knew about it and yet stood idle so that he could build anti-Islamic sentiment abound. The theories are ridiculous, but it's worthwhile to note that they exist primarily because the Muslims don't want to believe their brethren are capable of such a heinous act.

    I'm not saying that any inaction on their part is justified by these misguided theories, I'm just pointing out that far from rejoicing in it, most Muslims want to divorce themselves from the act and blame someone they already hate for other reasons, because accepting it themselves is too painful.

    Similarly, many German citizens during WWII refused to believe that all of the Jews being shipped off were being systematically slaughtered, in spite of logic and evidence.

    Bin Laden appears to be a popular hero in the Middle East, a modern-day psychotic bloody version of Robin Hood. I've heard a few qualified, mealy-mouthed responses from the Muslim community here in America about how "violence is not the best solution." What I have not heard is the shocked thundering raging denouncement and the commensurate police activity coming from Islam if the situation were truly what you say it is.

    I feel like a conservative nutcase for blaming this on the media, but I really think they're at fault. They, in fact, did not publicize the Islamic condemnations, or the candlelight vigils, or the letters and faxes of support and sympathy, preferring to show the dancing in the streets.

    That's not to say that there aren't people who rejoice to see the U.S. taken down a notch. There are, and while it's understandable that they enjoy seeing the U.S. take a punch, their ability to overlook the thousands of *innocent* lives lost is very, very sad, and betrays the low value they place on human life.

    I'm sorry, but the Muslim community has burned through their "benefit of the doubt." Until they start acting like civilized human beings, I'm not going to pretend that they are.

    I agree. Although it's funny that much of what we consider civilization to be was created by Arabs, I think you're right many Islamic countries are not what we now consider civilized people. And that's a big problem.

    As I said above, I think the core problem is that religious government locks a people into a feudalistic, tribalistic system that causes individual oppression and halts progress. It's not the people, because people are pretty much the same everywhere, it's their system. That's okay, they have the right to govern themselves as they choose, even if it's stupid.

    What they don't have the right to do is to come here and kill us. To my way of thinking, if the government of a country supports terrorism, then that government loses its right to govern. If the people of that country are unable or unwilling to remove that immoral government from power, then we have every right to do so, and we have every right to make sure that a similarly immoral government doesn't rise up in its place to continue the destruction.

    It does not give us the right to turn the region into a nuclear wasteland, nor does it give us the right to arbitrarily attack other Islamic countries who may not have had a hand in supporting the terrorists, nor does it give us the right to revile or abuse people who follow their own peace-loving faith.

    If you want my solution to the 9/11 problem, here it is: We should establish a policy (it would probably go down in history as the "Bush Doctrine", if it were to happen) that states that any government that supports terrorism, or even any government that doesn't take reasonable actions to stop terrorism, loses its right to rule its people. If necessary, the U.S. will militarily remove the offending government, under UN auspices if possible. If the nation doesn't seem to be capable (in the estimation of the damaged party) of establishing a more civilized government, then the region should become a protectorate until a stable, secular and democratic government ruled by law can be established and thoroughly entrenched.

    In this particular case, I think Afghanistan should become a U.S. protectorate, that we should impose a constitutional, democratic government modeled on our own, and that we should stay involved and enforce the rule of law for at least a decade. We should allow the people to retain their own culture, except where it conflicts with our view of civilized government. We could just leave, as you say, but that will not prevent a repeat which may endanger us yet again in the future. This process will be expensive and will require us to help rebuild the physical infrastructure but, IMO, we can afford it because it's the most effective way to prevent another 9/11.

    In the case of Iraq, we need to make clear to Saddam Hussein that he has already proved to the world that his regime is uncivilized, by his attacks on his own people, the terror attacks on Israelis and the invasion of Kuwait. In spite of that fact, we are kindly offering him a chance to prove that he is not preparing to employ weapons of mass destruction. To that end, we will send in teams of skeptical inspectors to whom he must prove that he has no weapons of mass destruction. His failure to do so would invoke the consequences of the "Uncivilized Nation" policy, namely invasion and replacement of the government with one which *we* consider to be civilized, with establishment of a long-term protectorate if necessary.

    In short, if a government shows itself to be evil, then we will replace it with one of our choosing. If people want self-rule, then they should make sure their government behaves. I think this policy would not only be moral and logical, it would also be a really serious threat. The biggest, deepest reason why the Islamic countries' leadership fears the U.S. isn't the overt actions that we might take, it's the creeping influence of our immoral ideas and ways of life. The threat here is that if they choose to support terrorism, our subtle, creeping influence will suddenly turn into complete, overt control of every aspect of their government and society.

    The biggest problem I see with this sort of policy is that it will require the U.S. to come clean about its own terrorist past and commit to never again participate in terrorism, or be subject to accusations of hypocrisy, which would undermine the moral high ground the policy attempts to take. Americans understand that it was previous administrations that supported terrorism, and that it was in the context of the very unique situation of the cold war, but the rest of the world may not, so we should just apologize, point out that we have replaced that previous government and promise never to permit it again.

    I look forward to your comments.

    --
    Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  136. Re:A sophisticated way of relating to others? by jeko · · Score: 1

    You, Swillden, are a reasonable person, and if the world were filled with reasonable people, then wars would cease, brutal poverty would disappear, and the only trouble in the world would come from those times when Mother Nature tried to kill us with earthquakes and avalanches.

    And I am profoundly uncomfortable being on this side of the argument. I want to live in a John Lennon/Paul McCartney "Ebony and Ivory" world. I want to believe in the Brotherhood of Men. I want to believe that conflict comes from misunderstanding, that the majority of the Arab world basically want to spend their days raising their kids, planning barbecues and scheming for a pay raise.

    Unfortunately, I no longer believe that, and that's where you and I disagree. Painting in ridiculously broad strokes, I believe the Arab world is filled with embittered people scapegoating the US for all their problems. While I don't believe the US has clean hands in this part of the world, and I would cheerfully send dozens of CIA agents to prison for the support of the Shah and other crimes, I believe the scapegoating has gone beyond all reason. I believe the leaders of the Arab world encourage this scapegoating because it distracts the populace from their own incompetence.

    I don't believe the average Arab male is interested in such concepts as equality before the law. I don't believe the average Arab male is interested in the idea of "tolerance," instructions from the Koran about "People of the Book" notwithstanding.

    And though it disturbs me greatly, I have come to believe that if the Arab world were strong and the US were weak, if the situation were reversed, that the Arab world would oppress my people beyond description.

    You, of course, disagree with me here. I, in fact, want to disagree with me here. I am fully aware that all I have to support my position is anecdotal evidence and a subjective point of view.

    Furthermore, since I have a brother-in-law in Manhattan who saw the towers fall with his own eyes, and I had to watch my dear mother-in-law wait a few hours wondering to hear if her only son were still alive in a faraway land, I am no longer a detached observer.

    I'm tainted, I'm biased and I am fighting to hear "It's a Small World" in the background.

    Of course, what we really need to settle our argument, is for an organization like Gallup to go and take a statistically rigorous poll of the area. Publish the results, get an open debate, watch the polls, sift through the tea leaves of the election results.

    I notice this sort of thing happens in Isreal all the time.

    But, oddly enough, this doesn't happen in Saudi Arabia. Nor Syria. Nor Iran. Nor any other "moderate" member of the Arab world. I'll spare you the straw men of such extreme elements as Libya. I will grant you that Turkey is the brightest picture going.

    Hmmm. The Arab world doesn't seem to have much in the way of a "free" press. Reporters Without Borders reports that expressing an unpopular opinion in the Middle East is a good way to find yourself imprisoned or worse. Reform movements in Iran have found brutal opposition from the clergy, and will require a full-blown revolution now to survive.

    Ah, but Islam is the religion of peace and justice isn't it? Isn't justice one the the Pillars of Islam? I see a woman in Pakistan sentenced to be gang-raped for simply being seen with another caste member. I see a woman in Nigeria sentenced to being buried up to her neck in the dirt and then having her skull bashed in with rocks.

    Now, yes I know that both cases had intervention after the fact in the face of international disapproval. I just don't believe these are anomalous points on the graph. These were not cases of Rodney King being beaten by cops or some poor man being shot to death by bigots in blue. These were the considered, debated decisions from jurists on the bench after time for deliberation. I think it's reasonable to believe that these decisions reflect community standards for the area.

    If you want to know a man's character, look at how he treats those below him. If you want to measure a business associate, watch how he treats waiters. If you ever find yourself at a disadvantage to him, that's how you'll be treated.

    How does the Arab world treat its women and children? In the hottest places on Earth, the women are draped under curtains appropriate for Alaskan climates. When asked why, the gentle members of the Arab world reply that it is to protect them from rape, that a woman in a mere business suit invites attack. In the face of bared knees, it is apparently unreasonable to expect men to restrain themselves.

    To further this protection, paid policemen in many Arab countries wander the streets and attack women who aren't properly shrouded. Even our "ally" Saudi Arabia insists that American combat soldiers should wear these curtains to protect them from assault by their own religious policemen.

    But beyond clothes, the Arab world buys and sells their daughters in a way that would not seem out of place in the Antebellum South. Girls are told who to marry. They are routinely left uneducated and segregated in public places. Speaking their mind is an open invitation to part with their teeth. Women are property.

    And that, I'm afraid, is their vision for us. Bought. Sold. Told where to go. Told what to do. Forbidden to speak. Beaten at will. What the Arab world wants ... is dominion. While the West cues up speeches from Martin Luther King and fights court cases to extend Jefferson's legacy, the Muslim world dreams of bringing Sharia law to all, one world under the crescent, one world bowing to Mecca.

    And for those who disagree, Daniel Pearl stands as a warning and admonition.

    I don't want to believe this, but Islam has left me no choice. They outlaw the free press that might bring hard numbers to our discussion, forcing us to duel with unreliable anecdotal evidence. They oppress their women and lower castes in ways that make me blanch, and that example promises me that if they ever gain influence over my life, I can expect the same.

    They follow callow, corrupt leaders like Arafat, and when men like Sadat appear on the scene, they assassinate them. They take hostages like Terry Anderson and use them as tools of statecraft. They send their children out strapped with explosives and nails into civilian centers. They use jetliners as weapons and target international places of business.

    The Arab world is aware of its reputation. They watch Hollywood movies. They know what we think of them. Where have their leaders insisted Hollywood was wrong? Where are the fierce denials about the status of women? Why haven't the religious police been dismantled? Why aren't the girls sent to school? Why is it that the only exchange students from the Middle East I've met have been men?

    But you're right. I really don't know what I'm talking about. I've never lived in the Middle East. The soldiers and roughneck oil workers I've talked to who have are perhaps not the most scholarly of observers. It's probable that the journalists are just chasing the most juicy stories.

    You and I are walking along a hot highway in West Texas, and we come upon a box dropped off a truck. We can't see directly into the box, but when we listen to it, the box rattles.

    I reach for a shotgun. You tell me I'm overreacting, that the box most likely is filled with toys or clocks. Put the gun away before you blow your foot off.

    You're right, of course.

    But that box is still rattling.

    --
    He put his boots up on the table and made a face. "The sig," he smirked. "You can waste your life in search of the sig."
  137. Last Post! by alpg · · Score: 1

    Q: Why shouldn't I simply delete the stuff I never use, it's just taking up
    space?
    A: This question is in the category of Famous Last Words..
    -- From the Frequently Unasked Questions

    - this post brought to you by the Automated Last Post Generator...