Awesome video: Navy shoots down drones with frickin' laser beams

By | July 21, 2010, 12:26pm PDT

Summary: When it comes to wonderful toys, the United States Navy has some of the best ever.

When it comes to wonderful toys, the United States Navy has some of the best evar. For example, the Navy now has lasers that can shoot down drones.

In a combined test with those crazy kids at Raytheon, the Navy shot down four unmanned aerial test vehicles over water.

Sadly, the lasers were not mounted on the heads of sharks or mutant sea bass, but were instead part of the Navy’s Laser Weapon System guided by Raytheon’s Phalanx Close-in Weapon System sensor suite.

The LaWS system is a combined beam fiber system, consisting of six “industrial use” lasers that simultaneously focus on the target, as the video at the top of this article shows.

The laser system was mounted to the Navy’s Phalanx close-in shipboard defense system. When defending a ship, there’s a range of defenses that come online, and if a missile passes through one defense, the next is expected to take it out.

Phalanx, as deployed today, is the last automated shipboard defense against incoming missiles. Given that the Phalanx fires projectiles at a rate of 3,000 to 4,500 rounds per minute, the day I got to watch a Phalanx system shoot down a target was one of the cooler “toy” experiences I’ve ever had. Sadly, when I asked, I was told I was not going to be allowed to take one home. Sigh.

In terms of the laser-based test, the Navy/Raytheon team married up the Phalanx electro-optical tracking and the system’s radio frequency sensors to the six industrial lasers and when the UAVs came into range, the targeting team let loose the beams, shooting down each target.

This is still early in the laser system’s development process, so there won’t be any frickin’ lasers deployed for quite a few years. Even so, it was an impressive technology display.

Sadly, there apparently is no truth to the rumor that the new laser system has any relationship to the Alan Parson’s Project.

For the record, I did not write this article merely as an excuse to publish Dr. Evil clips. Not at all. That was just a pleasant frickin’ coincidence.

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In addition to hosting the ZDNet Government and ZDNet DIY-IT blogs, CBS Interactive's Distinguished Lecturer David Gewirtz is an author, U.S. policy advisor, and computer scientist. He is featured in The History Channel special The President's Book of Secrets, is one of America's foremost cyber-security experts, and is a top expert on saving and creating jobs. He is also director of the U.S. Strategic Perspective Institute as well as the founder of ZATZ Publishing.

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Delivery System
LadyGray 7th Sep 2010
Can you mount it on the back of a large Basset Hound?
0 Votes
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.... with a highly reflective mirror-paint make the laser less destructive? Has always been the case, that the defence against a highly advanced technologically sophisticated weapon involves far less technology to implement.
@snberk341
I read another article on this where a Raytheon tech discussed this, and he said a reflective coating would reduce the effectiveness, but with enough power a laser would first distort and reduce the reflectiveness of an area, and once that's done burn through it. Of course, this is all in the development stages, so who knows how long it will be until they get that much power available.
@brble
Do you remember the old star wars trials? Where the lasers were used to trigger a circuit with a photo cell? The circuit then detonated a bomb on the target. Looked great for the cameras, but was complete BS. When the response includes 'enough power', just remember: with 'enough power' a flashlight could melt steel.
@snberk341
With a laser of sufficient strength the energy transfer to the surface would negate it's reflective qualities. Theorists looked at this during the "Star Wars" debate in the 80's where a "spinning warhead" defense was seen as a means of negating a classic burn through. The same thing was shown- deliver enough energy to the target at once, it doesn't matter.
Think of a mirror getting close to the sun... it doesn't matter how reflective it is- at some point the energy being delivered overwhelms the surface's ability to reflect it. And there are lasers that burn hotter than the surface of the sun.
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@brble & @davesully
snberk341 Updated - 22nd Jul 2010
Do you have a sense of how much power is required? It would be interesting to know.... Assuming the reflective paint technology gets better so that the power requirement goes up as well. Then how many of these spinning reflective warheads need to be sent against the target before the power required to burn the missile requires a power plant bigger than the target?

Once upon a time I was lucky enough to be given tour of a then current US guided missile destroyer. I remember then that the ship's electrical generators could power a city of, I forget now - 100k? 200k? people. I don't think they have much spare generation power, so the power plant to power the lasers would need to be on top of that.

I'm not saying that this isn't cool technology.... but I also remember a lesson from the WWII. When RADAR was in it's infancy, the way to avoid it was build wooden planes and boats. Even now, with far superior technology in RADAR units - one of the easiest things to make the other guy's very expensive RADAR system less effective is to build your ships with sides that slant inwards. Simple and cheap, and now your opponent needs to spend more money on their RADAR system.

PS Couldn't watch the Powers clips earlier, but Thanks! I'd forgotten those.... cheers
@snberk341 What's really top-secret is the Navy's black paintball launcher.
JK...party on Garth. lol
0 Votes
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How does the laser hold up
HollywoodDog 22nd Jul 2010
against a supersonic antiship missile?
@HollywoodDog Laser is light, goes faster than sound. supersonic missle goes boom (and not the sonic boom)
@HollywoodDog maybe a computer driven system would hold just right, but the laser beam still needs some time to damage the target, makes me wonder what would happen during several missile attack, some of them might be just bait.
@gzkyyl
I guess the question is, what's the alternative? They have cannons that do the work now, but they have their own weaknesses (flight time of the rounds, limited ammo, limited firing times, etc.). This is in development, and will no doubt be refined over time, and solid state lasers have been improving rapidly.
@HollywoodDog
The intercept envelope being really small, I'd go for option number 1: shoot down the plane before it launches the missiles. Crude but still more effective than building a defense system with high enough saturation points.
@jedikitty@...
So all you have to do is shoot down any aircraft that gets within 100 km of a warship? That is a recipe to kill innocents. Does anyone remember Iran Air Flight 655 and the USS Vincennes? Killing 290 civilians is not a practical option.
What happens when the beam misses, or is reflected back?
@Semibogus
Hah, good question! Maybe the same thing as in "Real Genius", an enormous pile of popcorn? wink If not that then, I guess, whatever the beam might encounter will be the next, albeit unintended, target.
That is why in a high threat environment Phalanx is in auto mode. This is because most missiles are near supersonic and with the sea level horizon in the, IIRC, 15 mile range no human could respond in time.

The laser would not, imho, be effective against sea surface missile attacks unless it was in the Megawatt range.

Depleted Uranium works quite well though. I mean trying to fly through a wall of stuff heavier than lead...

The role a 200KW CW range laser might have is still not settled. But, incoming MIRVs would be a good target. happy

As would be high altitude bomber attacks. If nothing else the pilots and bombadier would be blinded... happy

IIRC, Power is not the problem. Cooling is. Usually the chiller is three to five times the size and weight of the power supply. Definately not man portable.

Mike Sr.
0 Votes
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Several problems arise in this scenario... 1) the laser is a perfect target for the drone to lock a missile onto. A highly reflective mini-missile flying straight down the laser beam would be the end. 2) retro-reflective surface finishes would use the infrared laser beam to knock out its own electro-optical tracking system. 3) fog vents could spew fluid over drone surface, giving drone time to fire back. 4) Because then, Reagan would have been right! hehe So I will sit here and figure out one defeating technique after another if it means no successful Republican message gets through. ; )
0 Votes
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Delivery System
LadyGray 7th Sep 2010
Can you mount it on the back of a large Basset Hound?

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