US military's latest toy set: Record-breaking laser death star, er, truck Lockheed Martin says it is ready to deliver its most powerful laser weapon yet to the US military. This Death-Star-on-wheels can shoot down drones, missiles, and similar stuff, we're told. The American weapons conglomerate self-funded the building of a 30kW test system and then scaled the design up. The 60kW version is mounted …
The issue is not so much the energy of the laser, but the amount of time the target spends being irradiated. Even a relatively low power laser can cook all the electronics or the propulsion in a target which is moving slowly.
You can take out a drone or a boat with this. Maybe a relatively slow old fashioned cruise missile which is not maneuvering in the final phase (f.e. a Silkworm). Modern missile - especially hypersonic which is actively maneuvering in its terminal phase - not so much.
In fact, as far as applications go, its most effective (albeit never advertised) application is antipersonnel. In theory we are not supposed to be doing it, due to various conventions, In practice a weapon which produces guaranteed blindness (usually permanent) in all enemy soldiers up to 5-10 miles (far outside its normal kill range) is something our military would love to get (and will misuse it this way even if they are not supposed to).
In practice a weapon which produces guaranteed blindness (usually permanent) in all enemy soldiers up to 5-10 miles (far outside its normal kill range) is something our military would love to get (and will misuse it this way even if they are not supposed to).
I'll fix that a bit.. it's not just "our" military but all militaries. I can't think of any that wouldn't mind having and using it as you describe.
The general is right about the "target value" also. Just seems stupid to fire an expensive missile at a slow moving drone. So this laser weapon would work there. For high-maneuvering, high-speed targets, one needs a different solution.
I take it that your not aware that such weapons have been developed and deployed? There was a laser weapon deployed in the falklands and the ship with it mounted on was attacked but the weapon wasn't used as the ship was pointing the wrong way, according to the Admiral in charge of the task force in his memoirs.
Having mentioned that they have been deployed, i'll then point out that they have been banned since. Remember the landmines ban? It banned fragmentation weapons using any material that wouldn't show up on an x-ray, landmines, booby traps, and blinding laser weapons.
I was not aware of one being deployed in the Falklands.. Thanks for that.
I'll also add that the laser shouldn't be the last line of defense. Smoke, rain, fog, mist, etc. will make it pretty useless.
As for the landmine ban... how's that working again? I would hope the US wouldn't use it on human targets. Hope.. hope... hope....
The laser weapon was used to dazzle the Argentinian pilots at low level, say on a bombing run over San Carlos Water. It relied on the light being diffused by the canopy. Very similar to the prats who point lasers at airliners.
As I recall lasers used as blinding weapons are banned. Range finders, target markers and anti missile systems are OK, any of which may damage eyes as a collateral effect.
It banned fragmentation weapons using any material that wouldn't show up on an x-ray, landmines, booby traps, and blinding laser weapons.
I am giving this ban about 15 minutes once these weapons are deployed in a supposedly anti-aircraft/anti-drone role. Same as the lunatics around the Mediterranean are using a ZPU as an antipersonnel weapon. The only good thing is that the truck carrying it will shine in IR like a supernova (the generator and the lasers emit a lot of heat), all you need will be a salvo of ancient IR guided missiles and it is history. It cannot engage multiple targets simultaneously and it will be able to kill at most two. So an educated guesstimate for a guaranteed kill is ~ 5.
"...especially hypersonic which is actively maneuvering in its terminal phase" and "For high-maneuvering, high-speed targets"
High-speeds and manoeuvring, at least in terms of evasive manoeuvring, don't really go together. Anything travelling in the super/hypersonic realm isn't going to be doing much evasive manoeuvring due to the structural limits on the airframe and the high momentum of the vehicle.
Fast moving targets shouldn't be a problem so long as they are coming at you...
Anyway, the fix for that problem would be a tracking system that can move the beam along with the target. Did they forget to have Ken build them a secret phase conjugate tracking system?
Do NOT plug in any power inverters, USB chargers, coffee mug warmers, decorative USB/LED snowmen/xmas trees, or any other 12VDC devices into the laser truck's cigarette lighter socket! It is wired for 200kW and must be used to power the laser only! Thank you. Drive safe.
Does the laser come in orange? Now, all the complainypants that didn't like Obama's Death Drone Squads, can rest assured that Trump's Orange LASER Death Beam will bring swift America First Justice® to anything within a two mile radius! :P
"That beam, it's YUGE! I'm so proud. We just used it to burn up the US Constitution!" - D.J. Trump President of The Corporation of The United States of Conspiracy, LLC
I'm sure this works perfectly in places like the White Sands testing range. But in rainy, foggy, europe I can't see (and neither can the LASER lorry) how this could target an enemy that is above the clouds or in the mist.
I suspect that's where the OTHER electric toy will come in handy - just eject a chunk of metal at stupid speeds using the new railgun tech.
Whatever you're using, though, it looks like Duracell is in for some good times. All of these weapons need enough energy to power a small village for a year, so unless they come up with a way to make portable nuclear reactors, all of this fun can be affected in theatre by taking out the (power) supply chain.
... unless they come up with a way to make portable nuclear reactors,
Nuclear reactors can be quite portable, provided that you do not particularly care about the lifespan of the crew (or if the vehicle is fully robotic), and economize on the shielding. For example, Soviet TOPAZ-1 was less than 1000lb:
https://en.m.wikipedia.org/wiki/TOPAZ_nuclear_reactor
If you couple this one to a supercapacitor bank, for example, it can power a 200KW laser indefinitely, assuming that the duty cycle does not exceed 1% or so.
"just eject a chunk of metal at stupid speeds using the new railgun tech"
Railguns aren't new tech, The nazis tried using them in 1933 - the fact that no-one's (yet) managed to make a useful railgun that doesn't self destruct after a few shots is a matter of materials engineering more than anything else. (Although I suspect that using one as a flechette thrower would work well as a phalanx replacement)
Railguns aren't new tech, The nazis tried using them in 1933 - the fact that no-one's (yet) managed to make a useful railgun that doesn't self destruct after a few shots is a matter of materials engineering more than anything else.
It appears they're well on their way on that topic. What impresses me about the railgun footage I have seen is that they accelerate a sometimes definitely non-aerodynamic piece of metal to a velocity where that no longer seems to make much of a difference. I have no idea how many G's of acceleration this is, but to go from standstill to > Mach 6 "ZONK! Holy f*ck, did it puncture all of that?" in something like 0.1s is still strikes me as rather spectacular.
They're going to sell a ton of these...
I always thought the FAA was nuts to allow drones. We are going to need laser defenses covering all military targets: the White House, Pentagon, military bases, etc.
Imagine 100+ drones each with 10 pounds of C4 converting on one of these targets. We'd have nothing that could respond in time (that I know of).
Even if this system works we'll need a lot more than one laser... threats could from all directions simultaneously.
Also, I'd like to see the effectiveness in poor conditions - rain, snow, heavy fog, and smoke.
I can see problems with a ground based defense also... The Star Wars idea (lasers on satellites ) addressed this but military blimps w/ lasers might be more practical.
> Imagine 100+ drones each with 10 pounds of C4 converting on one of these targets. We'd have nothing that could respond in time (that I know of).
If these laser weapons were deployed as you suggest then the adversary would simply need to send 100+ drones covered with small mirrors. No actual weaponry required for people on the ground to be randomly blinded by their own military.
"I can see problems with a ground based defense also... The Star Wars idea (lasers on satellites ) addressed this but military blimps w/ lasers might be more practical."
The lasers in Reagan's 'Star Wars' were one-shot X-Ray lasers, powered by fission bombs, so yes, not suitable for ground-based use. Not really suitable for blimp use either though.
The effective range and laser power are tremendously important:
Even a relatively slow 500 mph missile/projectile traverses 2 mile in only 14 seconds.
This is all the time available to the laser to kill it, or be killed.
I wonder how long a 60 kw, presumably IR laser needs to dwell on the target to melt thru.
I wonder how long a 60 kw, presumably IR laser needs to dwell on the target to melt thru.
Depends on your assumptions. Some fag packet maths suggest that 0.1 kWh would be enough to melt 250g of titanium, which is probably a reasonable guess for the energy that might disable a missile that has no anti-laser protection (or so the military hope). A 60 kW laser would deliver that in about six seconds, assuming minimal diffraction or attenuation. Allow a small amount for both, and you might say eight seconds. A relatively slow missile travelling at 1,400 mph would travel 3.1 miles in that time. A Russian R37 missile is believed to reach mach 6, and in eight seconds would travel about ten miles.
Perhaps the interesting thing is that those numbers suggest that hardening a missile against the laser (when attacking the laser itself) is pretty easy - all you need to do is add an ablative coating, sufficient sacrificial mass, or a briefly effective reflective coating to give the missile the extra time to close on the target. In terms of that sacrificial mass, the R37 weighs around 600kg and has a range up to 400km. It would seem to me that trading two and a half kilos of fuel for the same sacrificial mass would have little impact on performance, yet would take the 60kW laser a minute or more to burn through. And that's enough time for an R37 to travel a staggering 75 miles.
If not head on, the maths is more favourable for the laser because you can't put the entire missile in a sacrificial coating but at hypersonic speeds the missile would not be in range for more than a couple of seconds.
"A relatively slow missile travelling at 1,400 mph would travel 3.1 miles in that time. A Russian R37 missile is believed to reach mach 6, and in eight seconds would travel about ten miles."
Thanks to momentum, even if you do manage to disable the guidance system, or even compromise the airframe, leading to a break-up, the debris will still be a pretty effective kinetic weapon.
'A Russian R37 missile is believed to reach mach 6, and in eight seconds would travel about ten miles'
If something is going that fast I don't think a LASER is going to noticeably heat the skin more than friction already is. But then not every weapon works against every target.
"I wonder how long a 60 kw, presumably IR laser needs to dwell on the target to melt thru."
At those speeds you don't need to do more than compromise the skin. Airflow will do the rest - and if it's an IR or TV seeker, then all you need to do is blind it - 30kW is more than enough to do that if it's flying towards you.
Anyhow, forget mounting them on trucks and consider what happens when you fit these to a AC-130U instead of (or in addition to) the 105mm howitzer
I wonder how long a 60 kw, presumably IR laser needs to dwell on the target to melt thru.
At present I guess that is indeed the only targeting solution, but I can imagine that if optics and targeting improves you could go after propulsion or targeting mechanisms instead - assuming that diverting it elsewhere is not giving you more problems.
Laser weapons have one other advantage: they don't run out, so if you have multiple ones you can spread the power over multiple sources. Provided you can get the sensor to shooter link to all shooters sufficiently fast you could just cook the target from multiple sides, that also renders any potential defensive action by the target less effective.
Only a small amount of heating starts to darken the surface and then it's all over.
Against a slow moving drone that's fine. Against an incoming missile moving at mach 5 the laser won't have much time. The other problem is that this IS an arms race. We can build shielding to enable spacecraft to reentter the earth's atmosphere, so somebody can certainly build a missile with sufficient heat proofing to last for a few seconds, and that simply has to fly down the beam.
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