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Combat Lasers To Be Added To US Fighter Jets (nextbigfuture.com)

An anonymous reader quotes a report from NextBigFuture: The US Air Force plans to arm its fleet of drones and fighter jets with high-tech laser weapons.... Ground testing of a laser weapon called the High Energy Laser, or HEL, was slated to take place last year at White Sands Missile Range, New Mexico, service officials said...

The Air Force plans to begin firing laser weapons from larger platforms such as C-17s and C-130s until the technological miniaturization efforts can configure the weapon to fire from fighter jets such as an F-15, F-16 or F-35. Instead of flying with six or seven missiles on an aircraft, a directed energy weapons system could fire thousands of shots using a single gallon of jet fuel.

208 comments

  1. Pew Pew Pew by zenlessyank · · Score: 3, Insightful

    Gotcha Bitch!!!!

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

      Yes. It will be just that easy to control the citizens.

    2. Re:Pew Pew Pew by Anonymous Coward · · Score: 5, Funny

      Not only that, but this is immensely useful in annoying enemy cats

    3. Re:Pew Pew Pew by Anonymous Coward · · Score: 0

      Give them HEL, soldier!

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

      don't be ridiculous

      All that it takes is a desire of consumer goods to control the citizens, where have you been for the past 60 years?

    5. Re:Pew Pew Pew by Tuidjy · · Score: 1

      Shame on you to even suggest such a thing! It is illegal to design blinding weapons.

      Within the power range the article is talking about (only about 150MJ in a gallon of aviofuel) the laser will be barely powerful enough to melt any amount of aluminum to get at the electronics behind it. It is clear that this weapon system is designed to disrupt sensors and optics. Any damage to pilots' (or civilians') eyes is just a side effect, which is A-OK, legally speaking... As I am sure any military lawyer will happily tell you.

      This will be one of these 'nasty' weapons:
      Stage 1) We got them, everyone else is protesting them, but that's because they are backward savages who can't make them.
      Stage 2) We have to keep making those horrible weapons, because our evil enemies have developed and will hesitate to use them.
      Stage 3) There is an international treaty against those horrible, horrible weapons, but we will not sign it, because we know those no-good other nations will keep using them no matter what they've promised.

      How much sarcastic am I? Frankly, dear, I have no clue.

      --
      No good deed goes unpunished...
    6. Re:Pew Pew Pew by RenderSeven · · Score: 2

      (only about 150MJ in a gallon of aviofuel) the laser will be barely powerful enough to melt any amount of aluminum to get at the electronics behind it

      IANALE so honestly asking - 150MJ ~= 42KWH, assume they run at 50% efficiency (Ive heard 80 and believe 20), and a 100KW laser will cut steel 38mm deep x 1mm at 3M per minute, so (scribble scribble scribble .. carry the 2 ...) its on the order of 1000 1 second pulses. Need about 200 shaft horse-power to run it but the F119 engine (for instance) makes about 17,000 SHP so probably not much of an issue. A one-second pulse that could slice 38x10x1mm in steel could probably do 10 to 100 times that in aluminum skin, enough to slice struts, fuel tanks, control surfaces, hydraulics, turbine blades, and of course flesh. I dont think its really about messing with sensors or blinding pilots when destruction and carnage seems technically feasible.

      As far as your sarcasm goes Im 100% on board with that! LOL

    7. Re:Pew Pew Pew by legRoom · · Score: 1

      A one-second pulse that could slice 38x10x1mm in steel could probably do 10 to 100 times that in aluminum skin...

      I was curious, so I took a stab at calculating how much easier aluminium is to melt than steel:

      [room temperature] = [273 K]
      [heat capacity by mass] = [molar heat capacity] / [atomic mass]
      [heat of fusion by mass] = [molar heat of fusion] / [atomic mass]
      [melting energy by mass] = ([melting point] - [room temperature]) * [heat capacity by mass] + [heat of fusion by mass]
      [melting energy by volume] = [melting energy by mass] / [density]

      For Fe (Iron):
      [density] = [7.87 g/cm^3]
      [atomic mass] = [55.8 g/mol]
      [molar heat capacity] = [25.1 J/(mol*K)]
      [melting point] = [1811 K]
      [molar heat of fusion] = [13.8 kJ/mol]

      [heat capacity by mass] = [25.1 J/(mol*K)] / [55.8 g/mol] = [0.450 J/(g*K)]
      [heat of fusion by mass] = [13.8 kJ/mol] / [55.8 g/mol] = [247 J/g]
      [melting energy by mass] = ([1811 K] - [273 K]) * [0.450 J/(g*K)] + [247 J/g] = [939 J/g]
      [melting energy by volume] = [939 J/g] * [7.87 g/cm^3] = [7.39 kJ/cm^3]

      For Al (Aluminium):
      [density] = [2.70 g/cm^3]
      [atomic mass] = [27.0 g/mol]
      [molar heat capacity] = [24.2 J/(mol*K)]
      [melting point] = [933 K]
      [molar heat of fusion] = [10.7 kJ/mol]

      [heat capacity by mass] = [24.2 J/(mol*K)] / [27.0 g/mol] = [0.896 J/(g*K)]
      [heat of fusion by mass] = [10.7 kJ/mol] / [27.0 g/mol] = [396 J/g]
      [melting energy by mass] = ([933 K] - [273 K]) * [0.896 J/(g*K)] + [396 J/g] = [987 J/g]
      [melting energy by volume] = [987 J/g] * [2.70 g/cm^3] = [2.66 kJ/cm^3]

      Assuming that only melting is required, it appears that Aluminium is only 3x easier to cut than steel. (If you really want to drill a deep hole in metal fast, it becomes necessary to actually boil it. But, I suspect that takes more power density than a 100 KW laser is likely to achieve against a fast-moving target at long distance.)

    8. Re:Pew Pew Pew by RenderSeven · · Score: 1

      Nice! Thats a lot more work than I invested, thanks! So, lets say 3x easier, but more importantly the skin is thin and at Mach2 dog-fighting it probably doesnt take much to make an aircraft "revert to kit form". Just in terms of material ablated, 38x10x1=380ml of material. Just to be simple lets say the skin is 3mm to account for the 3x 'easier', so half a meter slice in 1 second. Or 1 meter half-sliced. That seems sufficient to end a tactical engagement (IMHO). Collimation is easy enough out to a mile. Target speed does matter - can the beam be held on a spot long enough to matter may be the trick... one meter per second *is* pretty slow. Then again, we'd have 1000 pulses to fire for every gallon of avgas. If the target has to keep jinking to avoid laser lock, he's not going to be able to use guns or lock missiles.

    9. Re:Pew Pew Pew by legRoom · · Score: 1

      can the beam be held on a spot long enough to matter may be the trick

      Yes it's hard to believe they can aim that quickly and precisely - but then, it's such an obvious and fundamental problem that the answer must surely be, "Yes"; otherwise why even bother? Based on the capabilities of the cancelled (but successfully tested) THEL project, I think this problem has been solved since the early 2000s, if not earlier.

      If the target has to keep jinking to avoid laser lock, he's not going to be able to use guns or lock missiles.

      It's quite plausible that the main battlefield impact of early laser weapons will simply be to force tactical changes on the enemy: fight in cloudy/foggy/smoky conditions whenever possible, always attack in sufficient numbers (of vehicles, or of individual missiles/shells/etc.) to overwhelm the capacity of the laser defences, etc.

      However, I expect that if the early laser weapons are at all successful, research and development of higher power levels will be a high priority. At some point, the only effective strategic defence will be to have your own laser weapons. When the enemy has (for example) 10 MW orbital lasers, the only effective defence will be to have a laser of your own to shoot back with.

      I don't expect lasers to actually replace or obsolete missiles and guns, but everyone will need "laser fire support" to be able to maintain the tactical conditions necessary to effectively employ missiles and guns - kind of like the way aircraft haven't replaced ground vehicles, but your ground vehicles probably won't last very long if the other guy has air support, and you don't.

    10. Re:Pew Pew Pew by Anonymous Coward · · Score: 0

      Turbine blades are titanium, but otherwise you're on the money.

    11. Re:Pew Pew Pew by Anonymous Coward · · Score: 0

      dog fight combat is not made at mach 2. DF combat is on all accounts made at subsonic speed.

      Also Take your numbers and remember that is for a 1 second. Now a jet fighter moving at 250 ms (roughly realistic combat speed) will traverse its full length in 1/12 second. That means its capability of transfering energy is MUCH reduced. If you want to be able to cut a half meter cut 3mm deep. You need a laser able to do it MUCH MUCH MUCH faster than these numbers.

  2. But... by Anonymous Coward · · Score: 0

    When can we get a trained shark with mounted lasers on it?!

    1. Re:But... by plover · · Score: 4, Funny

      About the same time they fill a house with popcorn and figure out how to use the laser to pop it all.

      --
      John
    2. Re:But... by Salgak1 · · Score: 2

      Well, considering the long-standing figher tradition of painting shark teeth and eyes on the nose of a fighter plane. . . it's going to all depend on whether the laser is on the nose or not.

      If under the wing, it will be "sharks with fricking lasers under their fins". . . .

    3. Re:But... by Anonymous Coward · · Score: 0

      About the same time they fill a house with popcorn and figure out how to use the laser to pop it all.

      As long as they don't look at the popcorn with a remaining eye.

  3. Also known as by Anonymous Coward · · Score: 5, Funny

    Ground testing of a laser weapon called the High Energy Laser

    It will also be referred to by some as the High-Powered Laser, or "HP Laser" for short, and jets with this type of weapon mounted upon them shall be known as HP Laser Jets

    1. Re:Also known as by Anonymous Coward · · Score: 1

      Bravo. How long exactly have you been sitting on that one?

    2. Re:Also known as by Anonymous Coward · · Score: 0

      Good one.

    3. Re:Also known as by U2xhc2hkb3QgU3Vja3M · · Score: 4, Informative

      Score: +5 Been-sitting-on-that-joke-for-32-years

    4. Re:Also known as by Owza · · Score: 5, Funny

      "Fire the laser!", Error - 'PC LOAD LETTER'

    5. Re:Also known as by Malenx · · Score: 5, Funny

      I really hope they don't shutoff all of the laser pods just because the magenta laser is low on fuel.

    6. Re:Also known as by Anonymous Coward · · Score: 0

      PC Load Letter

    7. Re:Also known as by halivar · · Score: 5, Funny

      PC LOAD LETTER? What the fuck does that mean?

    8. Re:Also known as by troon · · Score: 1

      It's a message familiar to many European HP printer owners of a certain age.

      If a document formatted for US Letter paper was sent to an HP printer loaded only with ISO A4, that message would appear and the printer would refuse to print.

      --
      Ydco co ,df C erb-y go. a Ekrpat t.fxrapev
    9. Re:Also known as by Nutria · · Score: 1

      So, so young you are.

      --
      "I don't know, therefore Aliens" Wafflebox1
    10. Re:Also known as by halivar · · Score: 2

      I was quoting "Office Space". ;)

    11. Re: Also known as by Anonymous Coward · · Score: 0

      I dunno, you're the only ne missing the office space refernce!

    12. Re:Also known as by Anonymous Coward · · Score: 0

      Just watched that movie last night ;)

    13. Re:Also known as by orlanz · · Score: 2

      I think they were going for: HEL Fire

    14. Re:Also known as by Nidi62 · · Score: 5, Funny

      I really hope they don't shutoff all of the laser pods just because the magenta laser is low on fuel.

      And in a boon to defense manufacturers, it will actually be cheaper to purchase a whole new airframe than it will be to refill the laser cartridges.

      --
      The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
    15. Re:Also known as by Anonymous Coward · · Score: 0

      To all the old-timers who hang out with the cool kids, it means "put some US letter sized paper in the input tray / slot".

      https://en.wikipedia.org/wiki/Letter_(paper_size)

      Letter or US Letter is a paper size commonly used as home or office stationery in Canada, the United States of America, and Mexico. It measures 8.5 by 11.0 inches (215.9 by 279.4 mm). US Letter size paper is a standard defined by the American National Standards Institute (ANSI), in contrast to the A4 paper used by other nations, which is defined by the International Organization for Standardization (specifically, in ISO 216).

    16. Re:Also known as by Anonymous Coward · · Score: 0

      Will there be a "color" variant?

    17. Re:Also known as by hlavac · · Score: 1

      Great. So bloated, slow firmware, and phones home to offer you ammo at 1000% surcharge whenever you shoot.

    18. Re:Also known as by Anonymous Coward · · Score: 0

      Gp was quoting the move Office Space.

    19. Re:Also known as by goarilla · · Score: 2

      Will there be a color version ?

    20. Re:Also known as by colinrichardday · · Score: 1

      But will there be an ink version? Spray it on the enemy's cockpits and blind them.

    21. Re:Also known as by JoeMerchant · · Score: 1

      Awesome, need to work a shark into it though.

    22. Re:Also known as by Anonymous Coward · · Score: 0

      Welp, there go medicaid, social security, 401ks, roads and fire services.
      And once Law Enforcement starts installing it on their squad cars, there goes any and all personal belongings and property, because every new laser costs a house!

    23. Re:Also known as by Anonymous Coward · · Score: 0

      Naw. We've had an AGM named that for 30 years or so.

    24. Re: Also known as by Anonymous Coward · · Score: 0

      This thread is over 9000!

    25. Re:Also known as by Anonymous Coward · · Score: 0

      Yes, but while watching Office Space for the first time I was like... "PC LOAD LETTER"? a child should know what that means!

    26. Re:Also known as by Anonymous Coward · · Score: 0

      "The red mercury capsule is out! Reloaaaddd!!!" A barely service aged deck crew member starts running from the shelter with the replacement capsule in the wheelbarrow.

    27. Re:Also known as by Holi · · Score: 2

      WHOOOOSH!

      --
      Sorry, teleporters just kill you and then make a copy. A perfect, soul-less copy.
    28. Re:Also known as by stealth_finger · · Score: 2

      Damn it feels good to be a gangster

      --
      Wanna buy a shirt?
      https://www.redbubble.com/people/stealthfinger/shop?asc=u
    29. Re:Also known as by MachineShedFred · · Score: 1

      A. it was a quote from Office Space
      B. it wasn't just HP - Lexmark printers would show that message too.

      --
      Slashdot still doesnâ(TM)t support Unicode after it was added to the HTML standard in 1997.
    30. Re:Also known as by shawn2772 · · Score: 1

      It's a message familiar to many European HP printer owners of a certain age.

      If a document formatted for US Letter paper was sent to an HP printer loaded only with ISO A4, that message would appear and the printer would refuse to print.

      As long as you're explaining the joke, you may as well do a complete job.

      "PC" was an abbreviation for "Problem Code". "LOAD LETTER" meant just what it says: A request to load "letter" sized (8.5" x 11") paper. This could be because the loaded paper wasn't the right size, or it could be because the paper tray was empty.

    31. Re:Also known as by Anonymous Coward · · Score: 0

      PC was the paper cassette. The printer told you where it expected letter sized paper, but apparently the message keeps spreading confusion even today.

    32. Re: Also known as by jsh1972 · · Score: 1

      Of course. Can't go around having only white lasers... They're also working on female lasers at this moment, they can call them "fasers"

    33. Re: Also known as by Anonymous Coward · · Score: 0

      Ah Jam Their Radar!

    34. Re:Also known as by Anonymous Coward · · Score: 0

      Not only Europeans... pretty much the whole world outside North America. Used to drive me nuts when living in Africa.

    35. Re:Also known as by Anonymous Coward · · Score: 0

      PC = Paper Cassette

    36. Re:Also known as by Anne+Thwacks · · Score: 1
      a child should know what that means!

      An American child perhaps, although they are unlikely to encounter the problem. In Europe, a Letter is one character of the alphabet. We have never had so called "letter" sized paper. In the UK, we had foolscap prior to about 1970. And Imperial, Elephant, double elephant, Quarto and others.

      "Letter" has never been a paper size in Europe, and is not an obvious name for a paper size (though I concede that "double elephant" isn't either).

      This message was the ultimate in inappropriate messages, not least because there was no letter size paper in the whole country (Except perhaps Xerox Corp's test facility). The options should have been "Resize document to fit" or "Cancel". In practice, the only remedy was often to reboot both PC and printer. Or reboot PC, and buy printer from alternative supplier - given that inkjet printers are cheaper than ink cartridges.

      --
      Sent from my ASR33 using ASCII
    37. Re:Also known as by dwywit · · Score: 1

      The "PC Load Letter" was an irritant, but IIRC, you could configure either the printer itself, or the driver on your computer, to automatically select from the A4 tray if no other size was specified. Maybe it was a combination of both.

      There was much rejoicing at my workplace when we figured that out.

      --
      They sentenced me to twenty years of boredom
    38. Re:Also known as by dwywit · · Score: 1

      Wasn't "PC" an abbreviation of "Paper Cassette"? I remember seeing the word "Error" on the display, but "PC" only appeared in relation to the paper tray/cassette.

      --
      They sentenced me to twenty years of boredom
    39. Re:Also known as by jewens · · Score: 1

      Found step 3. Sell the laser below cost and make it up on refills.

      --
      That group of bovine standing over there appears quite portentous. That's right it's an ominous cow herd.
    40. Re:Also known as by Anonymous Coward · · Score: 0

      In the mid nineties I inherited the administration of a bunch of SunOS machines and a floor of various HP LaserJet printers. The printer handler on SunOS relied on text config files for each printer device and a series of semi-interested admins had just fucked the lot of them up. It was a learning experience for me with repeated walks back and forth to each printer, deciphering of codes and rummaging through dusty manuals.

      The LaserJet II+ that I would have most wanted to take out back was built like a tank and probably have broken anything that I could have tried to smash it with

      So yeah, rtfm, lesson learned, and Office Space is funny because it is so real even to this day.

    41. Re:Also known as by shawn2772 · · Score: 1

      Wasn't "PC" an abbreviation of "Paper Cassette"? I remember seeing the word "Error" on the display, but "PC" only appeared in relation to the paper tray/cassette.

      Could be. I'm sure I recall seeing the "Problem Code" expansion in the manual, but that was a long time ago.

    42. Re:Also known as by Coren22 · · Score: 1

      It happened to us Americans as well...when the paper tray ran out of paper. Likely this happened more often than a European trying to print a document that was sized wrong.

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
  4. Hello China! Hello Russia! by Anonymous Coward · · Score: 0

    I must be shooting your motherfucking asses to the ground!

    Just kidding!

    You'll be atomized at the core! and never make it to the ground!

  5. F-35 by Anonymous Coward · · Score: 1

    Yeah why not plan to add yet another feature to the F35 ? What could possibly go wrong...

    1. Re:F-35 by Anonymous Coward · · Score: 0

      New weapons system integration happens to every aircraft throughout it's lifespan, why would the F-35 be exempt from this? That certainly would make it useless.

    2. Re:F-35 by Unordained · · Score: 1

      http://foxtrotalpha.jalopnik.c... -- there was already discussion in 2014 about replacing the lift fan with dual (top & bottom) laser domes.

    3. Re:F-35 by dsmatthews9379 · · Score: 1

      A laser can point in any direction, and you can't dog fight with an opponent that has the option to hit you from any approach angle, while you are still kilometres away. i.e. If he can see you he can burn your eyes out long before you can punch him.

    4. Re:F-35 by Anonymous Coward · · Score: 0

      You suppose the range of the laser will be enough to match the range of missiles.. to match an R-77 range a laser must be HELISH strong. To cut trough 80 km of atmosphere and still ahve the power to down a plane is a completely different matter of cutting a steel plate 1 inch away from the laser. ( steel is only 8 thousands times more dense than air... so 80 km of air will deplete the laser MUCH more than the hull of the plane when it is eventually hit.

    5. Re:F-35 by Coren22 · · Score: 1

      Using your math,

      80 km = 80000 m
      8000x

      So, the steel on the plane is 10m thick? That is a heavy plane.

      Let alone that planes are made out of aluminum skins, which according to another poster above is 3x easier to cut than steel, so it will cut through 30m of aluminum at the power to get through the atmosphere.

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
  6. Single gallon of jet fuel by rmdingler · · Score: 1, Interesting
    Wiki: "A one megajoule laser pulse delivers roughly the same energy as 200 grams of high explosive, and has the same basic effect on a target."

    Interesting stuff, and since we get a lot of our tech from gargantuan military budgets, it will be even more interesting to see what trickles down.

    As opposed to weapons of destruction, lasers plausibly hold more promise disrupting communications in battle.

    --
    Happiness in intelligent people is the rarest thing I know.

    Ernest Hemingway

    1. Re:Single gallon of jet fuel by peragrin · · Score: 5, Insightful

      The thing is current hel are 10 kilowatt and are the size of a car(often towed behind a Humvee)

      To get to the mega joule requires a lot more fuel than a gallon of jet gas.

      --
      i thought once I was found, but it was only a dream.
    2. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      And you don't need the equivalent of 200 grams of high explosive to blind the enemy pilot. The OP is researching a different topic entirely.

    3. Re:Single gallon of jet fuel by cdrudge · · Score: 2

      You sure about that? I remember seeing a documentary back in the 80s where they were able to get 5MW into a plane. It might not have been a pulsed laser though...

    4. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Two things:

      - to *deposit* a MJ at 10 KW you need to frutz at your target for 100 seconds. Hmmm. Even at 1MW (the highest number mentioned around here) takes 1 second continuous. Dream on.

      - Jet fuel (Wikipedia) has an energy density of about 37.4 MJ/l, that makes roughly 142 MJ/gallon. Even assuming an incredible transformation efficiency (remember: all the long way from a turbine to a laser!) you are stretching your shots very thin, at roughly 0.1 MJ.

      I think this was the marketing department. As a software developer I know this kind of thing. Makes me wish for medieval punishments, like whipping at the village fountain.

    5. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 1

      142 MJ/gallon

      142 Michael Jacksons per gallon of Jesus Juice, for those of you who are unit-challenged

    6. Re:Single gallon of jet fuel by Rei · · Score: 2

      Deliberately-blinding weapons are illegal.

      That said, some of the obvious uses are pretty low-hanging fruit, such as detonating incoming missiles or burning through aircraft aluminum. Things like taking out tanks with airborne lasers are obviously completely impractical with current technology (though there may be some weak points, such as tank optical systems and such).

      Fairly compact, high power lasers are a reality - they've been doing this with chemical lasers for a while (they're basically fancy rocket engines that generate a lasing plasma exhaust). The problem is, it's easy to keep your planes stocked on jet fuel - nitrogen trifluoride and deuterium, not so much.

      --
      "I know you have questions." "That would be why I just asked them."
    7. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Watts are Joules per second. 1 W = 1 J/s. So a 10 kW laser can deliver 1 MJ if the pulse is short enough. How short? 1/100.000th of a second. Up the laser to 100 kW and it's 1/10.000 s. Is it long enough to pierce the armor of a jet or a tank? Don't know.

    8. Re:Single gallon of jet fuel by myowntrueself · · Score: 1

      The thing is current hel are 10 kilowatt and are the size of a car(often towed behind a Humvee)

      To get to the mega joule requires a lot more fuel than a gallon of jet gas.

      Then theres the issue of beyond visual range engagements, which is where most of the action happens these days and where missiles excel. If your fighter carries a laser and no missiles you better hope your laser can shoot down their missiles, which they will be firing at you from over the horizon where your laser cannot reach.

      Oh wait I guess you could fit a rail gun on your f35

      --
      In the free world the media isn't government run; the government is media run.
    9. Re:Single gallon of jet fuel by john.r.strohm · · Score: 1

      You've slipped a few decimal places.

      1 J = 1 Watt-second. 10 kW x 100 seconds = 1 million Watt-seconds = 1 MJ. 100 kW x 10 seconds = 1 MJ.

      1 MJ is about 23 Ampere-hours at 12 Volts. You can buy that battery off the shelf at Batteries and Bulbs. A Sears Diehard contains quite a bit more. The trick is to put all of it into a short, tightly-collimated laser pulse.

    10. Re:Single gallon of jet fuel by funwithBSD · · Score: 1

      Now if we only had a plane that could carry a gun the size of a car.... oh wait.

      http://4.bp.blogspot.com/_J0Li...

      A-10.

      --
      Never answer an anonymous letter. - Yogi Berra
    11. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Deliberately-blinding weapons are illegal.

      Yeah. And exploding bullets are for firing upon "military equipment" only, not people. So they shot at "military equipment" then - such as uniforms. . .

      A 100W laser will drill through & disrupt an enemy plane - if you can aim at the same sport for a few minutes. This is hard to do, for enemy planes tend to move a lot. Strangely, they seem to fall out of the sky after only a few seconds . . .

    12. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Holy shit... You got that totally backwards, moron...

    13. Re:Single gallon of jet fuel by Eunuchswear · · Score: 1

      That said, some of the obvious uses are pretty low-hanging fruit, such as detonating incoming missiles

      Because missiles are well known for exploding when you hold a lighted candle to them.

      --
      Watch this Heartland Institute video
    14. Re:Single gallon of jet fuel by goarilla · · Score: 1

      So a low powered laser can deliver an insane amount of power (1MJ) if the pulse is shorter than its bigger and more powerful counterpart ?
      I think it's the other way round.

    15. Re:Single gallon of jet fuel by Rei · · Score: 2

      Air to air missiles are made of thin aluminum, and high powered lasers are not exactly "a lighted candle". Even if you don't trigger a detonation, you're looking at burning through wiring, damaging control surfaces, damaging guidance systems, and a whole host of other things.

      Missiles are not built like tanks.

      --
      "I know you have questions." "That would be why I just asked them."
    16. Re:Single gallon of jet fuel by Rei · · Score: 1

      100kW, not W. And if it takes you a few minutes to burn through a couple millimeters of aluminum with a 100kW laser then you're doing something very, very wrong.

      That said, yes, you do need high precision focusing and tracking. But it's faster to adjust the aim on a mirror than move an airplane.

      --
      "I know you have questions." "That would be why I just asked them."
    17. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Yeah. And exploding bullets are for firing upon "military equipment" only, not people. So they shot at "military equipment" then - such as uniforms. . .

      Myth.

    18. Re:Single gallon of jet fuel by MachineShedFred · · Score: 1

      Sure. So instead of deliberately trying to blind the pilot of the enemy aircraft, he's shooting at a target on the plane conspicuously close to the cockpit window. Just like using infantry weapons that are designated for use against military equipment only are shot at military equipment like mortar tubes, heavy machine gun tripods, H-harnesses and entrenching tools, and absolutely NOT the operators or soldiers carrying those things.

      --
      Slashdot still doesnâ(TM)t support Unicode after it was added to the HTML standard in 1997.
    19. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      If these weapons genuinely are only useful for blinding pilots then the DoD is more callous and indifferent to the well-being of veterans than I had ever imagined. By legitimizing blinding weapons against fighter pilots, they are inviting reciprocity from other nation states to take similar countermeasures against our own pilots. It's like they're deliberately trying to make transparent cockpits obsolete to give themselves the "Occulus Rift" advantage over countries that can't afford fancy helmets. In an EMP or ceylon invasion scenerio(hackers), will our fighters be blind sitting ducks in titanium coffins flying at Mach 2?

        It may have been inevitable that all nations would eventually adopt this tactic, but I hope this is a reaction to intelligence that ISIS/N. Korea/China/Russia have already secretly been taking steps towards this capability. It would be shameful if we were the ones to cross that line in the sand first, taking the already cruel realities of war and making them that much more barbaric.

    20. Re:Single gallon of jet fuel by tnk1 · · Score: 2

      You're right, although, if they actually do get lasers right, you could have one plane shoot down missiles that are fired BVR. That would then require the opposition force to close to visual range to intercept the incoming.

      Of course, nobody has really mentioned ground-based laser anti-aircraft weaponry, which is much, much more feasible than jet lasers, and would have both the stability, and the ability to have a big generator to actually fire those thousands of high power shots per minute. Then all you need is BVR radar and you can pick off thousands of incoming missiles as soon as they enter visual range.

      A jet is a much better firing platform for a laser weapon, mostly because a jet always has a look-down ability to ensure they have line of sight on a target, but an AA weapon with sufficient visibility would seem a much better first project for the technology.

    21. Re:Single gallon of jet fuel by fuzzyfuzzyfungus · · Score: 1

      They'll probably disrupt more than communication: It's obviously impolite to mention this, much less suggest that it's a feature rather than a tragic side-effect of trying to score a good, honest, shooting-down of an opposition aircraft; but a laser powerful enough to be useful against an airframe at nontrivial distance is definitely in the 'do not look into with remaining eye' category. At great distances, it will merely be dazzling(if in the visible band), since being illuminated will expose every tiny scratch and imperfection in the cockpit windows; and closer in it'll definitely be powerful enough to cook your retinas well before it reaches the power levels needed to cut through aircraft materials.

      The Protocol on Blinding Laser Weapons forbids such weapons when designed for that purpose; but "Blinding as an incidental or collateral effect of the legitimate military employment of laser systems, including laser systems used against optical equipment, is not covered by the prohibition of this protocol." so Team Legal shouldn't have too much trouble justifying anything unpleasant that happens.

      I'd imagine that, while the US is among the relatively few capable of miniaturizing a laser powerful enough to actually cause aircraft damage on a fighter plane, just about anyone operating aerial surveillance aircraft should be nervous about the prospect of high powered lasers as well: on the ground the challenges of portability and minaturization are lower; and when you've got a fancy lens system specifically designed to gather light and focus it on a delicate chunk of silicon sensor, it takes good aim; but not a terribly dramatic amount of power, to blind the camera.

    22. Re:Single gallon of jet fuel by fuzzyfuzzyfungus · · Score: 1

      An opaque cockpit will save your eyes in the event of a laser strike; but unless we make some fundamental breakthroughs in ultra-high-dynamic-range cameras; you'll still probably end up flying blind if the opponent can hit the cameras that are supposed to be providing your super-advanced augmented reality feed.

    23. Re:Single gallon of jet fuel by fuzzyfuzzyfungus · · Score: 1

      I wouldn't necessarily want to rely on it against a radar-guided missile; but an IR and/or machine-vision guided missile will almost certainly not have its homing capabilities improved by a laser strike. Scoring an actual kill would take substantially more energy; but it should be substantially less dangerous once flying blind.

    24. Re:Single gallon of jet fuel by amicusNYCL · · Score: 1

      It seems like lasers should be used for defense before offense. A tank outfitted with a laser defense system capable of destroying incoming tank rounds or anti-tank missiles, and ground explosives, would be a pretty formidable weapon on the field. It would need to be saturated with fire in order for a hit to be scored, which would be a major problem if you're facing those without a huge size advantage. The same for planes, let the lasers handle the incoming missiles while the plane drops its bombs.

      --
      "Our two-party system is like a bowl of shit looking at itself in a mirror." - Lewis Black
    25. Re:Single gallon of jet fuel by iTrawl · · Score: 1

      I'm not sure that I'm doing this correctly, but went to Wolfram Alpha and put 1 MJ in it. Got 277.8 Wh. That means that a 277.8 W laser would need one hour to output 1 MJ. So... To output 1MJ in a single second, I multiplied that by 3600 => 1 MW of power is needed. A 16.6 kW laser would need a minute, so if these guys don't mind flying in circles for a minute with their lasers on, they're probably good.

      How are they doing regarding portable nuclear power stations that can fit into planes? They could even be a deterrent against shooting your planes down, because the shooters would basically nuke themselves (even if only a little) if they do.

      --
      "Everybody's naked underneath" -- The Doctor
    26. Re:Single gallon of jet fuel by AchilleTalon · · Score: 1

      You are wrong. The energy density of jet fuel is 34.7 MJ/l, which gives us 131.4 MJ/gal. If you convert to kWh, you get 36.5 kWh. This is 131353.8 kWs. The target power is 100 kW, hence you get 1313 1 second shots from a jet fuel gallon. Each shot is probably below 1 second and this is the theoretical peak. So, it is theoretically feasible to get a few thousands shots from a gallon of jet fuel.

      --
      Achille Talon
      Hop!
    27. Re:Single gallon of jet fuel by myowntrueself · · Score: 1

      You're right, although, if they actually do get lasers right, you could have one plane shoot down missiles that are fired BVR. That would then require the opposition force to close to visual range to intercept the incoming.

      Of course, nobody has really mentioned ground-based laser anti-aircraft weaponry, which is much, much more feasible than jet lasers, and would have both the stability, and the ability to have a big generator to actually fire those thousands of high power shots per minute. Then all you need is BVR radar and you can pick off thousands of incoming missiles as soon as they enter visual range.

      A jet is a much better firing platform for a laser weapon, mostly because a jet always has a look-down ability to ensure they have line of sight on a target, but an AA weapon with sufficient visibility would seem a much better first project for the technology.

      I guess its totally feasible to have an anti-missile laser system on an aircraft but I doubt you'd want the same laser system for antimissile work as you want for air to air combat or air to ground, so that means your F35 now has to carry two or more laser systems around and complicates things even more. Having specialist anti-missile laser carrying aircraft might be an option, but again thats complicating things more.

      --
      In the free world the media isn't government run; the government is media run.
    28. Re:Single gallon of jet fuel by Anonymous Coward · · Score: 0

      Yes... and so is that little gun mounted in an A-10 Thunderbolt II... I believe it is called GAU-8/A Avenger.

    29. Re:Single gallon of jet fuel by legRoom · · Score: 1

      To output 1MJ in a single second, I multiplied that by 3600 => 1 MW of power is needed.

      By definition, a Watt is 1 Joule per second.

      A 16.6 kW laser would need a minute, so if these guys don't mind flying in circles for a minute with their lasers on, they're probably good.

      The question is, can you continuously illuminate the same small spot on a rapidly moving, distant target for a minute?

      How are they doing regarding portable nuclear power stations that can fit into planes?

      Actually, even a full 1 MW isn't an unreasonable amount of power to siphon off the main turbine(s) on a jet fighter: the shaft power on each engine is measured in 10s of MW. The additional mass of the required alternator, wiring, cooling, etc. would likely be substantial, though.

    30. Re:Single gallon of jet fuel by rmdingler · · Score: 1

      I'd imagine that, while the US is among the relatively few capable of miniaturizing a laser powerful enough to actually cause aircraft damage on a fighter plane...

      We have to assume once the technology genie is out of the lamp, the weaponization of lasers would proliferate.

      If the past is any sort of predictor of the future, this will not slow our development one bit, but it's still worth noting.

      --
      Happiness in intelligent people is the rarest thing I know.

      Ernest Hemingway

    31. Re:Single gallon of jet fuel by Coren22 · · Score: 1

      but I doubt you'd want the same laser system for antimissile work as you want for air to air combat or air to ground

      Why? Missiles and airplanes are made out of mostly aluminum. Why would you use a different laser for aircraft as missiles?

      Now, A2G lasers would be different as they have to point mostly down, but that just means you have a top (or forward) and bottom aiming assembly, they could still use the same laser and electronics.

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
  7. And this isn't going to render random ... by Ihlosi · · Score: 0
    ... bystanders blind?

    Oh wait, this is the military.

    1. Re:And this isn't going to render random ... by Anonymous Coward · · Score: 0

      no, actually, the amount of shit we do, both operationally and in design, to avoid blinding people is somewhere between stupid and so bureaucratic that it makes Catch-21 look sane.

    2. Re: And this isn't going to render random ... by Anonymous Coward · · Score: 0

      I was wondering, when was that taken out of the mix on war crimes? This would be considered an intentional blinding of a piolet. Maybe, this is the reason for the increase in drone aircraft?

    3. Re:And this isn't going to render random ... by Pseudonymous+Powers · · Score: 4, Interesting

      Yeah, I recognize that it's kind of the military's job to maximize their potential for destruction, but this definitely seems like one of those combat technologies that the whole world joins together to condemn after it's been in use for a couple of years, and the US is all like "you other countries are just jealous you don't have it", until one day they do have it, and then all of a sudden we're totally against it too, only we have to keep using it because now everybody's using it. Eventually everybody but Iran and North Korea signs a really unsatisfactory treaty and we all go home feeling bitter and aggrieved for generations to come.

      I just hope the inevitable tribunal is available in audiobook format.

    4. Re:And this isn't going to render random ... by Greyfox · · Score: 1

      Only if they fire it into a disco ball. If it's shining in your eye, It probably also just burned a hole through your head.

      --

      I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

    5. Re: And this isn't going to render random ... by Anonymous Coward · · Score: 0

      Perhaps you should read the law and treaties instead of making shit up. Believe it or not, killing the crew of a military vehicle is actually legal in war. Deliberately blinding them is not. However, if it's a side affect of killing them, then that's actually okay.

    6. Re: And this isn't going to render random ... by Anonymous Coward · · Score: 0

      What's Catch-21?

    7. Re:And this isn't going to render random ... by myowntrueself · · Score: 1

      ... bystanders blind?

      Oh wait, this is the military.

      I remember reading somewhere that the laser rangefinders on some Chinese tanks are deliberately designed to be capable of destroying the optics on enemy tanks. I don't think that would count as a blinding weapon since its directed at the optics not the gunner.

      --
      In the free world the media isn't government run; the government is media run.
    8. Re:And this isn't going to render random ... by Anonymous Coward · · Score: 0

      better than rendering bystanders exploded ?

    9. Re: And this isn't going to render random ... by Anonymous Coward · · Score: 0

      https://en.wikipedia.org/wiki/Catch-22

      Need more coffee

    10. Re:And this isn't going to render random ... by Anonymous Coward · · Score: 0

      That's much less worrisome than the inevitable trickle to police and SWAT.
      Permanently blinding use of lasers will be seen as a "compliance tool" on par with nightsticks, and officers will cream themselves at their newest power to abuse.

    11. Re: And this isn't going to render random ... by Coisiche · · Score: 3, Funny

      However, if it's a side affect of killing them, then that's actually okay.

      I think loss of vision is a side effect of being killed in 100% of fatalities.

    12. Re: And this isn't going to render random ... by Ihlosi · · Score: 1
      However, if it's a side affect of killing them, then that's actually okay.

      Unfortunately, it's also legal to blind three dozen bystanders while killing the crew of a military vehicle, as long as the blinding is merely a side effect of the weapon.

    13. Re: And this isn't going to render random ... by stealth_finger · · Score: 1

      What's Catch-21?

      It's like catch 22, but better!

      --
      Wanna buy a shirt?
      https://www.redbubble.com/people/stealthfinger/shop?asc=u
    14. Re: And this isn't going to render random ... by perpenso · · Score: 1

      What's Catch-21?

      An inferior catch that catch-22 improved upon. :-)

    15. Re: And this isn't going to render random ... by Anonymous Coward · · Score: 0

      Guess I won't donate my eyes to science, then.

  8. Energy density by Richard_at_work · · Score: 5, Informative

    Have laser power requirements really changed that dramatically since the Boeing YAL-1 project ended? The chemical oxygen iodine laser aboard the YAL-1 was a 1MW laser, and destroyed its targets (ICBMs) by heating the target until its fuel tanks ruptured - it didn't destroy the target in the traditional sci-fi sense of directed energy weapons...

    Whether you can use the same approach for enemy aircraft, tanks etc remains to be seen - it will probably be more likely that such targets need an ablative weapon to be destroyed, as jet fuel can be heated considerably more than the pressurised tanks on an ICBM.

    The YAL-1 carried enough fuel for 20 shots at 1MW strength, and it needed a Boeing 747 to carry it, so the summaries "thousands of shots using a single gallon of jet fuel" sounds a little ... optimistic when you consider the energy densities in play.

    1. Re:Energy density by Anonymous Coward · · Score: 0

      Maybe they misspelled and it's a 1mW laser. Like the kind that random bozos point at airliners. If you believe the airline pilots, you'd say the mW and MW have about the same effect.

    2. Re:Energy density by Anonymous Coward · · Score: 0

      A gallon of jet fuel contains 130 MJ of energy, so thousands of shots per gallon implies that each shot uses less than ~100 kJ of fuel, or probably ~10 kJ per shot once you allow for the inefficiency of the laser. That's similar to the energy in a rifle bullet - but it has to inflict its damage purely through thermal effects, because, unlike a bullet, it doesn't have any significant momentum.

      This is plenty, however, for dazzling sensors. An infrared-homing missile, receiving a few kW of infrared light to the sensor, in the middle of its passband, is going to have some trouble tracking its target aircraft.

    3. Re:Energy density by Anonymous Coward · · Score: 0

      It works on Star Trek, so you don't know what the fuck you're talking about.

    4. Re:Energy density by orlanz · · Score: 1

      Yeah, we keep getting this "Laser based weapons platforms" stuff every once in a while. I guess to keep the funding going. "Until miniaturization" is something I been hearing since the 90s.

      But they never really tell us how they solved the energy density problem. Planes fly so weight is pretty much the main concern. I never understood how a powerful enough laser could offset the weight of its power source. It goes to the battery problem. And if we solve that, there are a heck of a lot of applications in line well before a mobile laser weapons system.

      It makes more sense to have long range, powerful, ground based lasers that shoot at our planes/UAVs/drones to reflect off a mirror (think DLP TVs) to hit their targets. Add a balloon or blimp above the units to extend range.

    5. Re:Energy density by Anonymous Coward · · Score: 0

      Consider that it's really "just" a blinding weapon, but obviously it needs a different purpose, because otherwise it would be a violation of the Geneva Convention Protocol on Blinding Laser Weapons, which the USA has ratified.

    6. Re:Energy density by funwithBSD · · Score: 1

      Energy density solution?

      Elon Musk's Telsa batteries of course.

      --
      Never answer an anonymous letter. - Yogi Berra
    7. Re:Energy density by Anonymous Coward · · Score: 2, Informative

      You blind sensors, not people. Modern weapons use infrared sensors & cameras to home in on targets. Any people getting blinded is collateral damage, not intentional. (Loosing that plane due to a blinded pilot is a nice side effect though!)

      Similiar to how you don't really bomb civilians, only the armies hiding in the city. The dead civilians are rarely on purpose. They would not be dead if the entire army deployed a few km away from the city . . .

    8. Re:Energy density by alantus · · Score: 1

      It works as long as you divert power from the plasma manifolds to the forward phasers first.

    9. Re:Energy density by Anonymous Coward · · Score: 0

      I get the impression that they'll power the laser using a generator sharing the plane's fuel. The fuel has an energy density of roughly 35 MJ of energy per litre. I have no idea how much energy can be practically generated though, but you could probably get a few shots through at 100kW without forcing the plane to land immediately.

      The real question is: can a jet-fuel-powered laser beam melt steel beams?

    10. Re:Energy density by Anonymous Coward · · Score: 0

      Any people getting blinded is collateral damage, not intentional.

      Yes, of course. Otherwise it would be a violation of that protocol. Who would do such a thing?

    11. Re:Energy density by Anonymous Coward · · Score: 1

      The HEL is solid state. The YAL's problem was the horrible toxic and corrosive byproducts of the chemical laser. The answers were a) solid state [overheat risk] b) free electron [efficiency risk] c) recyclable byproducts for the chem laser [technology risk, still an environmental risk but less of one.]

      All three would require significantly more volume than the 747 test platform had and much more electricity.

    12. Re:Energy density by Thelasko · · Score: 1

      The chemical oxygen iodine laser aboard the YAL-1 was a 1MW laser, and destroyed its targets (ICBMs) by heating the target until its fuel tanks ruptured - it didn't destroy the target in the traditional sci-fi sense of directed energy weapons...

      How long will these fighter pilots have to keep the target in the sights before they get it hot enough to be destroyed? Once a bullet hits the target, the target is destroyed.

      --
      One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
  9. Why use "high tech lasers" by Anonymous Coward · · Score: 0

    When you can do it with a cheap laser pointer? They cause havoc and mayhem, can't they?

  10. Blinding targeting systems by Anonymous Coward · · Score: 0

    I would think lower powered lasers would also be very useful for blinding targeting systems.

    1. Re:Blinding targeting systems by Anonymous Coward · · Score: 0

      It just boggles my mind that they can keep a laser pointed at the right spot for long enough when both the weapon and the target are flying at hundreds of miles an hour.

    2. Re:Blinding targeting systems by Applehu+Akbar · · Score: 1

      Same as the ancient problem of aiming a gun, but without windage and air resistance.

    3. Re:Blinding targeting systems by Anonymous Coward · · Score: 0

      ...just with atmospheric fade and gradient problems... or did you think the atmosphere is perfectly uniform just because you can see from your head to your monitor?

      Stick to software, you sad delusional old man, and keep masturbating to your old space operas.

    4. Re:Blinding targeting systems by Anonymous Coward · · Score: 0

      Yes, it is very impressive.

      CIWS also boggles my mind. A CIWS tracks the trajectories of the bullets that it fires as well as the target with radar so that it can adjust the pointing with a feedback loop.

  11. Countermeasures by 110010001000 · · Score: 1

    Stupid. Enemy planes will just carry a bag of unpopped popcorn as a countermeasure. Lasers cannot penetrate popcorn as we all know...

    1. Re:Countermeasures by Megane · · Score: 1

      Or maybe some galvos and Pink Floyd music.

      --
      #naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
    2. Re:Countermeasures by Anonymous Coward · · Score: 0

      The joke's on them, because they hate popcorn!

    3. Re:Countermeasures by Whatanut · · Score: 1

      I went through this whole thread looking for a Real Genius reference. Guess this is as close as it's going to get.

      --

      yvan eht nioj
    4. Re:Countermeasures by CaptnCrud · · Score: 1

      This is ice, this is what happens to water when it gets to cold.
      This is kent, this is what happens when someone becomes sexually frustrated.

  12. Low-powered lasers by Anonymous Coward · · Score: 0

    Just arm our pilots with laser pointers to point them at enemy planes to blind the pilots with high-tech night vision.

  13. Required power for damage by EnglishTim · · Score: 1

    I wonder what you have to do to do sufficient damage to an enemy?

    They talk about starting with 10kW lasers; Steel has a specific heat of about 0.5, so if you trained the laser on the target for one second, you could vaporise a little over six grams of steel (not counting losses from transmission through the air, reflection etc) I can see that if you're using your laser to assassinate someone from a drone, that's certainly enough to kill someone, but is it enough to destroy a truck or an aeroplane? Is the laser even capable of operating continuously for a second?

    1. Re:Required power for damage by Anonymous Coward · · Score: 0

      What about Aluminium? If meant specifically for Aircraft. Or if accurate enough maybe can go directly for the pilot through the canopy.

  14. Effective Countermeasures? by Anonymous Coward · · Score: 0

    I would think that the application of reflective or ablative coatings could be pretty effective. The other defense possibility is diffusion through smoke or flak.

  15. LASIK by Anonymous Coward · · Score: 1

    Is this for fly-by LASIK?

  16. clouds? by Anonymous Coward · · Score: 0

    moisture and particulates in the air is going to absorb some of the energy and that in turn may defocus the beam. can they get the pulse width so low that this won't matter or are they just going to call off the war when the weather report looks iffy?

  17. Transparent Aluminum by Kunedog · · Score: 1

    Yeah, we keep getting this "Laser based weapons platforms" stuff every once in a while. I guess to keep the funding going. "Until miniaturization" is something I been hearing since the 90s.

    But they never really tell us how they solved the energy density problem.

    They've developed transparent aluminum, allowing the shark tank walls to be MUCH thinner and lighter.

    1. Re:Transparent Aluminum by myowntrueself · · Score: 1

      Yeah, we keep getting this "Laser based weapons platforms" stuff every once in a while. I guess to keep the funding going. "Until miniaturization" is something I been hearing since the 90s.

      But they never really tell us how they solved the energy density problem.

      They've developed transparent aluminum, allowing the shark tank walls to be MUCH thinner and lighter.

      zomg, so they will carry sharks with lasers on their heads in transparent aquariums on aircraft!

      --
      In the free world the media isn't government run; the government is media run.
  18. Unleash HEL!!! by Dareth · · Score: 1

    Unleash HEL!!!

    I am sure some "military management" will demand a personal inkjet on their desk still.

    --

    I only look human.
    My mother is a halfling and my dad is an ogre, so that makes me an Ogreling
  19. Rail gun is better by WindBourne · · Score: 3, Insightful

    Laser far too easy to counter. Smoke and larger air particles can counter for ground troops. For missiles, drones, and airplanes simply roll or make the exterior 'wiggle'. But a rail gun with say a varying 1-16 mj esp with smart ammo, is going to produce hits regardless of counter measures.

    --
    I prefer the "u" in honour as it seems to be missing these days.
    1. Re:Rail gun is better by Anonymous Coward · · Score: 0

      "Sir Isaac Newton is the deadliest son of a bitch in space"

      https://www.youtube.com/watch?v=hLpgxry542M

    2. Re:Rail gun is better by Anonymous Coward · · Score: 0

      It is kind of hard to keep the smoke/other-particles around a jet moving at mach speeds.

    3. Re:Rail gun is better by Khyber · · Score: 1

      " Smoke and larger air particles can counter for ground troops."

      At the powers stated, smoke and other particulates would get OBLITERATED.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    4. Re:Rail gun is better by Amanitin · · Score: 1

      What is the recoil like, with a rail gun? That kinda could be an issue on an aircraft.

    5. Re:Rail gun is better by avandesande · · Score: 1

      A laser attack is at the speed of light- not much time to deploy smoke.

      --
      love is just extroverted narcissism
    6. Re:Rail gun is better by WindBourne · · Score: 1

      Recoil is dependent on 2 laws:
      1) For every action, there is an equal and opposite reaction. i.e. you will have a recoil that equals the energy of the bullet or ammo.
      2) E=MC^2.

      So, if the rail gun kicks out at same energy, then same recoil. Issue solved.

      However, recoil is NOT a big deal for this. Look at chain guns on helicopters. The real issue is how much energy can be produced. a 1-16 MJ can mean a LOT of energy being used quickly.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    7. Re:Rail gun is better by Anonymous Coward · · Score: 0

      Not much, actually. Recoil is a function of momentum (mass times velocity). Rail guns fire small rounds at high velocity - the recoil will be similar to a conventional gun firing a heavier round at a lower velocity. What the round does to the target will have more to do with kinetic energy (half mass times velocity squared), so a rail gun can potentially do more damage than a conventional gun and have increased range without increasing recoil. This is why they are very attractive if the technology can be made to work.

    8. Re:Rail gun is better by Anonymous Coward · · Score: 0

      Recoil is dependent on 2 laws:

      1) For every action, there is an equal and opposite reaction. i.e. you will have a recoil that equals the energy of the bullet or ammo.

      2) E=MC^2.

      So, if the rail gun kicks out at same energy, then same recoil. Issue solved.

      However, recoil is NOT a big deal for this. Look at chain guns on helicopters. The real issue is how much energy can be produced. a 1-16 MJ can mean a LOT of energy being used quickly.

      No, you are not right. Recoil is a matter of momentum (speed x mass). E.g. both bullet and gun have same momentum oppositely directed (momentum is vector), but different energies. The bullet has way more energy than gun.

    9. Re:Rail gun is better by Amanitin · · Score: 1

      However, recoil is NOT a big deal for this. Look at chain guns on helicopters.

      maybe not on helicopters, but a kinetic weapon called the GAU-8 Avenger produces recoil that does appear to be a big deal for the aircraft that carries it.

    10. Re:Rail gun is better by legRoom · · Score: 1

      Laser far too easy to counter. Smoke and larger air particles can counter for ground troops.

      A cloud of particulates will also (temporarily) blind the troops trying to hide inside it, reducing their situational awareness and ability to fight back. This could be beneficial to the attacker in the same way that machine guns are used to "suppress" enemy soldiers - forcing them to duck for cover has tactical utility even if you don't actually manage to hit any of them.

      For missiles, drones, and airplanes simply roll or make the exterior 'wiggle'.

      Just "wiggling" is probably not good enough; all the attacker has to do is target a part of the plane that remains in his line of sight throughout the whole of (or at least most of) the motion. The laser hits at the speed of light, so it's not like you're going to be able to jink fast enough to actually be untargetable.

      A fast roll can help - if the defender could actually withstand the G-forces and (in the case of a manned plane) nausea. Even then, though, it's guaranteed to increase the required dwell time by about a factor of three. I expect that this method is only really useful for missiles; planes (manned or otherwise) are just too big to roll fast enough.

      But a rail gun with say a varying 1-16 mj esp with smart ammo, is going to produce hits regardless of counter measures.

      Perhaps. I don't think effective railguns will be miniaturized enough to stick on a fighter jet any time soon though. Maybe it would work on a large bomber or cargo plane, though?

  20. Game changer for close range air combat by Anonymous Coward · · Score: 0

    Immediate and drect line weapon is a game changer in the sky. If one plane can poke a significant hole in the enemy plane in 10 seconds within 10km range, that is impressive. Anti missile maneuvers will be ineffective.

  21. now we will have mirrored aircraft then by Anonymous Coward · · Score: 0

    http://physics.stackexchange.com/questions/70698/will-high-power-laser-penetrate-mirror
    awesome... so basically wasted moneys

  22. lame by Anonymous Coward · · Score: 0

    no sharks..... disapointed

  23. I guess "target rich environment" ... by Rambo+Tribble · · Score: 1

    ... will certainly have to be redefined.

  24. MS Office having US Letter as default... by SomeoneFromBelgium · · Score: 1

    ...didn't help matters ...

  25. This is only the start by smooth+wombat · · Score: 1

    Can't wait until we have the return of battleships armed with a Wave Motion gun and maybe with this advancement it won't take so long to charge.

    --
    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  26. I can hardly wait.. . . by Anonymous Coward · · Score: 0

    Curious to hear about the new strategies and issues with their use. A tiny fraction of that MW size of power is enough to blind someone. Opponents may try to wage battles in clouds where Laser-users will hate to go because too much of the wattage will be reflected back into their own eyes. Civilians wanting to watch air battles may have to put on special glasses to avoid getting blinded. Anti-missile Lasers or even anti laser missiles may also be considerations.

  27. Bah by Dareth · · Score: 1

    Just let me know when I get to cut my hedges with laser shears. Or better yet, cut my whole yard in one burst!

    --

    I only look human.
    My mother is a halfling and my dad is an ogre, so that makes me an Ogreling
  28. Breakthrough or pork by Anonymous Coward · · Score: 0

    Did they make some kind of breakthrough or is this just funneled pork to some well placed defense contractors? After blowing $5 Billion they finally shut down the Airborne Laser project because despite all of the engineering & equipment they couldn't get it to burn through a car hood at the necessary ranges. The only way it would have worked was if you had twenty to thirty of the things loitering over a country simultaneously at $1.5 B each and $100m a year to operate. And that was with a laser generator that took up 2/3 of the inside of a 747, what is a fighter aircraft/drone sized one going to be able to do even at a few miles?

  29. Re:LONG LIVE BELKA by neoritter · · Score: 1

    Apparently, there aren't that many Ace Combat fans in the audience...

  30. It never rains in a war zone by jeillah · · Score: 1

    So I guess we will have to call a timeout if it is too cloudy, rainy, foggy, smokey or dusty. We'll have a sunny day fighting force. Nice...

  31. I'll see your big laser, by jenningsthecat · · Score: 1

    and up you a bigger, better mirror!

    --
    'The Economy' is a giant Ponzi scheme whose most pitiable suckers are the youngest among us and the yet-unborn.
    1. Re:I'll see your big laser, by dwywit · · Score: 1

      I rather prefer the Larry Niven solution - a cloud of water vapour in between you and the source. Makes for a very bright cloud, of course.

      Laser hits optical sensor, sensor overloads. System oversight warns pilot that laser weapon is active, gives likely coordinates, pilot fires chaff or water vapour missile, and bugs out. Of course, those are defensive weapons, occupying precious hard points, but maybe that can be the job of a "protector" wing, accompanying the attack/bomber aircraft.

      Or the remaining - previously shielded? - sensors immediately turn their attention to the laser, determine course - that should be easy, it's pointing right back at the source - pilot fires a missile that is hardened against laser attack - ablative surface? - which tracks laser to source, directed by co-ordinated sensors on "protector" aircraft.

      Wouldn't any laser powerful enough to cause damage at a distance indicate its presence by the dust and water vapour it encounters?

      How does one "aim" one's laser? You couldn't do it by hand, you'll have to use something else to track and pinpoint the target. Unlike a missile, a near miss won't do. So you'll probably use RADAR, which will just reveal your presence and location to the enemy.

      --
      They sentenced me to twenty years of boredom
  32. Sucks for Combat, but for Personal Use in the USA by Anonymous Coward · · Score: 0

    Thousands of shots on a gallon of jet fuel....

  33. Where are the "frickin sharks" comments? by MrTester · · Score: 1

    Oh come ON.
    Not a single post complaining about the wasted funding to mount laster of fighters before we have bridged the "sharks with frickin' lasers attached to their heads" gap?
    What is wrong with you people!??!

    Ill leave it to someone else to work in "ONE MILLION DOLLARS"

  34. mirrors FTW by Anonymous Coward · · Score: 0

    There is no way they can destroy my jet covered with mirrors. I will cover my tanks with mirrors too

  35. bad name by slashmydots · · Score: 1

    They completely missed out on naming it the high energy laser light optical weapon or "Hello weapon."

  36. Also coming to civilian airliners? by JustNiz · · Score: 1

    They should put them in civilian airliners too.
    Its an immediate and effective solution to idiots who shine laser pointers into cockpits, and/or fly their drones in airport airspace.

  37. Re:LONG LIVE BELKA by stealth_finger · · Score: 1

    Yo buddy, still alive?

    --
    Wanna buy a shirt?
    https://www.redbubble.com/people/stealthfinger/shop?asc=u
  38. No disco balls necessary. by Ihlosi · · Score: 1
    Only if they fire it into a disco ball

    Disco balls are not required. At this power level, even diffuse reflections of the laser are dangerous to the eye.

    1. Re:No disco balls necessary. by Anonymous Coward · · Score: 0

      At this power level, even diffuse reflections of the laser are dangerous to the eye.

      How will the pilots not be blinded, in presence of even a slight moisture around the plane, at deployment time? There will be significant backscatter.

    2. Re:No disco balls necessary. by Ihlosi · · Score: 1
      How will the pilots not be blinded, in presence of even a slight moisture around the plane, at deployment time?

      I would assume they will be wearing adequate eye protection.

  39. number of shots in a gallon...is my math right? by Anonymous Coward · · Score: 0

    Am I calculating this right?

    The specific energy of Jet fuel "A" is 43.02 MJ/kg , or 167.8484 MJ/gallon
    Gas turbine electric generation is about 40% efficient, so lets call that 65.139 MJ "usable" energy.
    1 kWh = 3.6 MJ
    65.139/3.6 = 18.09 kWh
    t=E/P
    t=18.09 kWh/100 kW =0.1809 hours.
    To keep it easy, lets say it takes a full 1 second to charge the capacitors between shots ( who knows if this is reasonable.. I'm just making that up because it feels right to say "pew..." ( pause one second) "pew"

    Anyway... at one second that should be 651 shots on a gallon of gas
    If my math is wrong. please correct me.

  40. Re:Hello China! Hello Russia! by Anonymous Coward · · Score: 0

    Sorry to inform you, but Russia and China have already acquired this technology from us.

  41. They misspelled "sharks" by Anonymous Coward · · Score: 0

    Fighter Jets

    That's not how you spell "sharks".

  42. Re:LONG LIVE BELKA by LifesABeach · · Score: 1

    Maybe one could submit a test for the HEL System? Something like laser etching on the side of North Korean Mig-29 a message like, "Trump 2016"? Just a thought.

  43. China version by Anonymous Coward · · Score: 0

    Cool, about time we had actual laser guns! When's the alibaba version coming out though -- they're only on 4kW at the moment ...

  44. Maybe I'm missing something ... by dasgoober · · Score: 1

    But why would lasers make it onto aircraft before ground- or water-based vehicles?
    They are both much more forgiving, as far as weight/power requirements.

    1. Re:Maybe I'm missing something ... by EvilSS · · Score: 1
      Navy already has one deployed:

      The LaWS consists of a 30-kilowatt solid-state infrared laser, a Phalanx CIWS (close-in weapon system) radar detection and tracking system, and a special computer terminal that controls the LaWS.

      http://www.extremetech.com/extreme/195747-us-navys-first-laser-weapon-cleared-for-combat-blows-up-a-boat-a-small-plane-video

      Marines are working on a land based version called G-BAD (Ground-Based Air Defense). I think the Army has something either deployed or in testing as well.

      --
      I browse on +1 so AC's need not respond, I won't see it.
  45. Re:Rail gun is better [mind game] by Tablizer · · Score: 1

    Laser far too easy to counter

    I suspect this is a mind-game gambit. The enemy now knows some of our planes MAY have a laser, but don't know which, when, or how many. Thus, they feel they have to spend money and weight to counter them. Even though the laser is probably not a significant threat at this time, the enemy is losing some resources and capabilities to counter them.

  46. Game Changer; Best-defense? Nuke your own airspace by tarpitcod · · Score: 2

    This is great for defense. Unlike some people have said, you don't need to physically destroy the entire missile engaging you. For IR heat-seekers, you just have to blind the seeker. For radar guided missiles, deform the radome. Missiles tend to travel at high speeds, if you can screw up the radome or any part of the structure sufficiently it'll make a big difference to the attacking missiles pk (probability of a kill).

    Your same offensive weapon makes an awesome countermeasure against HOBS (High-Off-Boresight) stuff that someone might launch using a HMCS (Helmet Mounted Cueing System). If you have decent secure networking, there's no reason why a bunch of your team couldn't target the same target too. So instead of being hit by one laser, you hit the target with N lasers. The enemy having better kinematics becomes moot too. A rotating mirror can rotate much faster than even the most maneuverable airframe.

    The best countermeasure to this stuff if you don't have equivalent stealth? It's tough. You can't detect attackers well enough to get a firing-solution, you have nothing on your warning receivers for your team. Best case, let's say you know somethings up there due to VHF radar. So you send up your stuff, and all of them just get swatted from the sky. You ask your best engineers what to do about it, and they say 'Our best idea is to make the environment so nasty we deny the enemy access'. How do you do that? Nuke your own airspace. If you can't see the enemy but your assets start exploding, fire off a pile of SAMS (in nice solid reflective casings, no fine guidance necessary) and nuke your own the airspace.

    If they are at altitude then that's one thing (not much fallout). If they are using terrain shadowing / strike teams going in to take out your ground assets, then you are talking about basically carpeting yourself with fallout.

  47. as it just happens by cellocgw · · Score: 1

    First of all, most of the people who are posting here don't know squat about laser types, and I'd guess that most of the people reading here that do know about laser types and the JSF plans for same aren't talking.

    I'll just state for the record that there are lots of laser types other than chemical or diode.
    I'll also point out what should be obvious: controlling the beam's phase as well as pointing accuracy is critical to achieving high power density on target.

    --
    https://app.box.com/WitthoftResume Code: https://github.com/cellocgw
  48. Weren't lasers banned? by blackanvil · · Score: 1

    I believe there was an issue with laser-based weapons back when a tank-based laser targeting system was determined to be in violation of certain warfighting conventions in regards to blinding weapons. I supposed on the proposed air-to-air platforms it isn't much of an issue, but there would seem to be an issue with air-to-ground use, as it would be trivial to use a 1-megajoule laser to blind anyone in a large area who was looking in the wrong direction at the wrong time. Probably moot as the platform is air-to-air from the description, and probably less effective in real life than chemical explosion propelled metal, but it wouldn't surprise me if the technology got shelved over such concerns.

    1. Re:Weren't lasers banned? by halivar · · Score: 1

      Disclaimer: everything I know is hand-me-down knowledge. Don't make any legal decisions based on it.

      Lasers for the purpose of blinding are illegal. The CCCW basically codifies our understanding of the original Hague Conventions and Geneva Protocol, which laid down the idea that no weapons should be created whose sole purpose is to blind of maim. The problem with gas, shrapnel, and exploding bullets (as banned in the original protocols) wasn't that they were too deadly; it's that they weren't deadly enough. After the Great War the world had a huge population of poor, permanently crippled veterans whose lives were ruined by these weapons.

      If it's anti-vehicular, many of these rules don't apply. For instance, 50 cal guns are banned from anti-personnel use; but we mount them on humvees and designate them as anti-armor weapons.

    2. Re:Weren't lasers banned? by CaptnCrud · · Score: 1

      Kind of meandering thought but I once remember a cop telling me: "you would really be surprised what the human body can take", referring to bullet wounds and the like. It's kind of amazing how resilient the body is when you think about it.

      And that's all true, most weapons are actually really crappy at "humanely" killing something. That's why if you ever take a gun class they urge you to always aim for the head (not just from a legal standpoint, but from a moral/ethical one).

  49. Different options for different scenarios by sjbe · · Score: 1

    Then theres the issue of beyond visual range engagements, which is where most of the action happens these days and where missiles excel.

    Except when you need to actually have positive target identification. Shooting a missile over the horizon can work but it's a lot harder to be certain you aren't blowing up the wrong target. Missiles have gotten better but target ID is still and problem and they still put guns on fighters for a reason. The F22 has a 20mm cannon and they aren't getting rid of it in the near future.

    Plus direct line of sight for a laser system can be beyond visual range for a human eye.

    If your fighter carries a laser and no missiles you better hope your laser can shoot down their missiles, which they will be firing at you from over the horizon where your laser cannot reach.

    I don't think it is an either/or thing.

  50. Yay by ThatsNotPudding · · Score: 1

    Soon, instead of just blowing the Wrong Religion Brown People to bits, now we're also going to intentionally blind even more, just to make sure their families and tribes never stop hating us, thus ensuring permanent, profitable war.

  51. Red lasers or Blue lasers? by OrangeTide · · Score: 1

    I'd need to know if we're the good guys or bad guys.

    --
    “Common sense is not so common.” — Voltaire
  52. Completely bogus by Anonymous Coward · · Score: 0

    This article is completely bogus. You can tell right in this quote:

    "The Air Force plans to begin firing laser weapons from larger platforms such as C-17s and C-130s until the technological miniaturization efforts can configure the weapon to fire from fighter jets such as an F-15, F-16 or F-35."

    I assume everyone reading this is fully aware that the F-15 and -16 will have long ago passed out of the inventory before any of these miniaturized unicorn-horns are ready for service.

    "weapons system could fire thousands of shots using a single gallon of jet fuel" :rolleyes:

    Thousands of completely useless shots, yes.

  53. science by Anonymous Coward · · Score: 0

    The first time some corporal fires one of these at the russians or chinese, the enemy will retaliate with 16000 multiple-targeted nuclear ICBMs at all american cities, just so you know who the real victims are.

  54. Beyond visual range still not a thing ... by perpenso · · Score: 1

    Then theres the issue of beyond visual range engagements, which is where most of the action happens these days ...

    No. "They" have been saying that since the 1960s and it never works out that way. Pilots nearly always end up being told to get visual IDs. One major exception during an Arab/Israeli conflict (1970s), massive friendly fire incidents. Shooting down your own aircraft returning from a strike, mistaking them for an inbound enemy strike.

    This long range missile engagement idea is why they had the early F-4 models with no guns. What a mistake. One that is not being repeated with the F22 and F35. Lasers might offer better range than guns some day, guns are far less than visual range with complex projectile trajectories.

  55. Ground Damage? by qzzpjs · · Score: 1

    Has anyone considered the amount of damage a laser would cause on the ground when they miss their target? Bullets may eventually slow down and missiles might destroy a small area, but a laser that is on for a few seconds could leave a stripe across a large area of land depending on its strength and the plane's speed. Does a laser even have a range limit before its intensity dissipates or does it just go full strength until it finally hits something?

  56. Sharks by Anonymous Coward · · Score: 0

    They should mount sharks on too!

  57. Too heavy for fighters by Sir+Holo · · Score: 1

    The Navy did this first. They just strap together a few 10 kW industrial welding lasers.

    The problem is that heat dissipation is a major issue, even on a Navy ship where weight doesn't really matter. The business end can be mounted on a standard gunnery mount of a ship – yes. But below-deck is a gigantic transformer to power the laser, and those things get HOT. Cooling at that scale requires liquids, not heat-pipes, making the whole systems extremely heavy.

    The won't be in fighter jets for another 20 years, at least in any useful capacity.

    CITATION: Navy's "Future Combat Needs", a public document. :-P

  58. Re:Hello China! Hello Russia! by Anonymous Coward · · Score: 0

    Some years ago. the USA was angry to China, becouse china targeted some US satellites with the ground based laser beam. That was purely a test and a warning that China has the lasers to drill holes to US satellites.
    The russian federation has also laser weapons, development started in CCCP times

  59. effacacy? by Anonymous Coward · · Score: 0

    >a directed energy weapons system could fire thousands of shots using a single gallon of jet fuel.

    And potentially need all those thousand 'shots' to get the effectiveness of a single cannon round..

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

    Now we'll see the middle east equipped with mirrors

  61. Go go laser aeros! by Jesus_666 · · Score: 1

    I dunno. Putting a laser on an aerospace fighter? First off, we don't have terribly great lasers and they're talking about pulsed operation so we're talking about an IS SPL or MPL at best. And given that (IIRC) vees and aeros need insulation to use energy weapons it's probably a single one. That's six damage with a six hex range on a very expensive aero. Even if we get two that's twelve damage at six hexes. Compared to that the F-16 can mount something like six OS Thunderbolt 10s in addition to a machine gun as a fallback weapon. Thats sixty alpha damage from twelve hexes out.

    Sure, the F-16 mounting the MPL can fight longer in theory - but given the abysmal armor coverage on those things it's going to go down the first time someone hits it with an AC-10. And that AC-10 has superior range so to-hit bonus be damned, my money is on the AC-carrying ground unit.

    In my opinion it'd be a smarter move to work on getting LRMs or HVACs on those aeros instead of trying to put a short-ranged weapon on an inherently fragile unit before you've even had significant experience using it on the ground.

    --
    USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)