Directed-Energy Weapons | EM, Laser, Sonic, Microwave, Particle-beam etc |

kvs wrote:Putin did the right thing to put this information out.   The retards running NATO really believe that Russia has no
technological and scientific capacity and potential.    These f*ckwads don't even have physics degrees and think
they know all there is about physics.    In NATO we have conclusive evidence that only scum rises to the top and
the talent of the scum is to be scum and nothing else.  

This laser system probably has the ability to shut down all aircraft activity within some radius without using SAMs.
That is not a trivial achievement.   SAMs take time to reach their target and can be messed around with via EM
tricks.   A high power laser beam cannot be defeated even if hypothetically a mirror surface is used.   There is
always some absorption just due to QM effects.    And there is no way that stealth F-22s and F-35s ware going
to drop their RAM coatings for mirror finishes.  

High power lasers can also take down air to surface missiles of any speed.   So Russia is developing technology that
defeats its own innovations such as Kinzhal.    This is smart.    Yankees and their corrupt procurement process are
going to have a hard time catching up.    

And while the Americans haven’t been very successful here, Russia’s aircraft-mounted laser has proved
its ability to successfully fulfil the set tasks,” he added.

Russian combat lasers can destroy hostile targets - Defense Ministry
MOSCOW. March 12 (Interfax-AVN) - Combat laser weapons capable of disarming enemy capabilities and destroying
hostile targets were supplied to the Russian army last year, Deputy Defense Minister Yury Borisov told the ministry's newspaper Krasnaya Zvezda in an interview.

"Our nuclear scientists have learned how to concentrate energy required for destroying relevant enemy weapons instantly, in a split second," Borisov said.

"Laser weapons capable of disarming capabilities of the potential enemy and destroying every target of the laser beam were commissioned last year," he said.

"I think the dynamics of achievements, especially in the field of weapons based on new physical principles, has gained pace," Borisov said.

The-thing-next-door wrote:Could anyone maybe explain the mount for the ground based "laser" that was unveiled recently it does not seem to make any sense.

Why would it need more than just horizontal traverse and vertical elevation?

kvs wrote:

The-thing-next-door wrote:Could anyone maybe explain the mount for the ground based "laser" that was unveiled recently it does not seem to make any sense.

Why would it need more than just horizontal traverse and vertical elevation?

It looks like it is designed to cover hemispheres.    The laser seems to be designed as a last and best defense against any air attack for ground
based systems.    The S-400/500 can cover over the horizon incoming threats.    But a laser system with enough power is guaranteed to
take out anything that manages to get through.   Including hypersonic missiles.  

Why would it need more than just horizontal traverse and vertical elevation?

The-thing-next-door wrote:
That still does not answer the question of why it has such a wierd mount.

kvs wrote:  But a laser system with enough power is guaranteed to
take out anything that manages to get through.   Including hypersonic missiles.  

GarryB wrote:

Why would it need more than just horizontal traverse and vertical elevation?

What are you talking about?

The roof slides back and the system can spin in the horizontal axis 360 degrees and can elevate vertically from what appears to be pointing straight down (presumably  when not in use) to pointing straight up... what more would you need?

Then power issue is interesting - hypersonic missile flies in thousands degrees hot plasma . Not sure how plasma physics works if you apply laser to it? is going though or just warm sup the whole plasma cloud?

Does anyone know why they di not just make it one long tube or even better have the laser stretch along the entire lenth of the trailer and be directed by mirrors?

So you think the aditional axis of rotation is just to alowt it to fold up neatly when not in use?

GarryB wrote:

Then power issue is interesting - hypersonic missile flies in thousands degrees hot plasma . Not sure how plasma physics works if you apply laser to it? is going though or just warm sup the whole plasma cloud?

That reentry vehicle was design to operate at temperatures for a certain number of seconds or minutes in the atmosphere... applying a laser beam to add temperature to just one part of it rapidly is rather likely to cause problems... look at what happened to the space shuttle when one heat tile was damaged/removed.

It does not need to blow the munition completely to pieces... just creating a hairline weakness or crack would be enough for the environment it is in to destroy it rapidly...

Here is a screen shot... Axis A spins around horizontally and Axis B aims the laser up and down... in other words the same traverse elevation options any self propelled gun uses to aim at targets coming from any direction at any elevation.

GarryB wrote:

What are you talking about? It has two axis of movement... 360 degrees around so it can point in any direction of the compass, and up and down so it can point up and down at targets coming from different angles...

Here is a screen shot... Axis A spins around horizontally and Axis B aims the laser up and down... in other words the same traverse elevation options any self propelled gun uses to aim at targets coming from any direction at any elevation.

The-thing-next-door wrote:Well then could you explain how it would elevate or depress its main weapon when pointing sideways?

I really cannot believe that you came up with that anyone can see that you cannot have the traverse after the elevation.

flamming_python wrote:

The-thing-next-door wrote:Well then could you explain how it would elevate or depress its main weapon when pointing sideways?

I really cannot believe that you came up with that anyone can see that you cannot have the traverse after the elevation.

That big mount it's on will turn to the side, and then the articulation connecting the mount to the the actual laser installation can rotate clockwise or counter-clockwise in order to depress or elevate the laser as needed.

GarryB wrote:Each has different roles and therefore are not really comparable.

As pointed out the ground based system is likely designed to defend ground targets so it makes sense for it to be ground based... it will likely operate with other air defence systems including short and long range missiles and perhaps even guns...

And it flies 20mach...

did you make those arrows? ugly handwrite

My thoughts exacly but gary seems to think otherwise.

GarryB wrote:

And it flies 20mach...

The moon moves faster yet I can keep a camera pointed at it easily enough...

did you make those arrows? ugly handwrite

Would normally have used photoshop and made it pretty for you, but as I have ditched windows and I am using Mint Linux I had to use GIMP, which I am not really that familiar with yet.

A large team of Russian researchers from Rosatom, joined by three MIPT physicists, has modeled the impact of a nuclear explosion on an Earth-threatening asteroid. They manufactured miniature asteroids and blasted them with a laser. The modeling technique developed in this study is a way of experimentally evaluating asteroid destruction criteria such as the explosion energy needed to eliminate a dangerous object on a collision course with Earth. The English translation of the paper reporting the results will appear in the upcoming issue of the Journal of Experimental and Theoretical Physics.

Asteroids are celestial bodies consisting of carbon, silicon, metal, and sometimes ice. Scientists usually classify objects larger than 1 meter as asteroids, although this lower limit is disputed. On the other end of the scale, asteroids get as big as 900 kilometers across. Traveling at 20 kilometers per second, such giants pose a threat of obliterating all life on Earth.

There are two basic options when it comes to protecting the planet from a collision with an asteroid: It either has to be deflected or blown into pieces most of which will miss us or burn up in the atmosphere. The authors of the paper explored the second option by modeling the effects of a powerful shock wave released by a nuclear explosion on the asteroid surface. The research team showed that a brief laser pulse aimed at a miniature replica of an asteroid produces destructive effects similar to those of a nuclear explosion on an actual space rock. The distributions of heat and pressure predicted for the real event generally matched those measured in the scaled-down experiment.

For their laser model to be accurate, the researchers made sure the density and rigidity of the small-scale asteroid -- and even its shape -- mimicked the real thing, and controlled the shock-wave pressures. Thanks to this precise correspondence, the researchers had a way of directly calculating the required energy of a nuclear explosion on the actual asteroid from the energy of a laser pulse destroying its miniature replica. Thus, for example, to eliminate a 200-meter asteroid, the bomb needs to deliver the energy equivalent of 3 megatons of TNT. This was calculated once the team measured that it took a 500-joule laser pulse to destroy a model 8-10 millimeters in diameter. For the sake of comparison, the most powerful explosive ever detonated -- Tsar Bomba, or "king of bombs," built by the Soviet Union in 1961 -- had an energy output of about 58.6 megatons, though accounts vary.

The research team came up with a technology for manufacturing artificial asteroid material. Its composition corresponds to that of the chondrite (stony) meteorites, which account for about 90 percent of asteroid remains reaching the surface of the Earth. The properties of the model asteroid, including its chemical composition, density, porosity, and rigidity, were adjusted during manufacturing. The replicas were made using the data on the chondrite meteorite recovered from the bottom of Lake Chebarkul. It is the largest fragment of the asteroid that entered the Earth's atmosphere in February 2013, exploding over Chelyabinsk Oblast, Russia. The asteroid material was manufactured using a combination of sedimentation, compression, and heating, imitating the natural formation process. Out of cylinder-shaped samples, imitation asteroids of various shapes were made, among them spherical, ellipsoidal, and cubical ones.

To confirm that their laser modeling fits in with reality, the researchers also did compressible flow calculations. They showed that a lab asteroid 14-15 orders of magnitude less massive than its space prototype requires almost twice as much energy per unit mass to be completely disrupted.

The experiments made use of three laser devices: Iskra-5, Luch, and Saturn. The laser beam was first amplified to a predetermined power and then directed at the asteroid replica fixed in a vacuum chamber. Model destruction was monitored from behind as well as from the side, and fragmentation dynamics were registered. The laser affected model asteroids for 0.5-30 nanoseconds.

To estimate asteroid destruction criteria, researchers analyzed the data available from the Chelyabinsk meteorite. It entered the Earth's atmosphere as a 20-meter asteroid and fractured into small fragments that caused no catastrophic damage. It therefore makes sense to say that a 200-meter asteroid has been eliminated if it is fractured into pieces with a diameter 10 times smaller and a mass 1,000 times smaller than the Earth-threatening rock itself. For obvious reasons, this conclusion only holds for a 200-meter asteroid entering the atmosphere at a similar angle and for fragments traveling along trajectories similar to that of the Chelyabinsk meteor.

The researchers were also interested in whether the explosion effect is cumulative -- that is, can one powerful explosion be replaced by a succession of smaller ones? They found that multiple weaker laser pulses provide no significant advantage over a single pulse combining their power in terms of the general destruction criterion. This holds for simultaneous as well as consecutive pulses.

In some of the experiments, the laser was targeted at a cavity made in the miniature asteroids ahead of time. By exploiting the cavity, the researchers spent less energy -- namely, 500 instead of 650 joules per gram. Similarly, the effect of a buried nuclear bomb is expected to be more pronounced.

Calculations accounting for the scaling effects indicate that it takes a 3-megaton bomb to eliminate an Earth-threatening nonmetallic asteroid measuring 200 meters across. The research team now plans to expand the study by experimenting with asteroid replicas of different composition, including those containing iron, nickel, and ice. They also intend to identify more precisely how the shape of the asteroid and the presence of cavities on its surface affect the general destruction criterion.

"By accumulating coefficients and dependencies for asteroids of different types, we enable rapid modeling of the explosion so that the destruction criteria can be calculated promptly. At the moment, there are no asteroid threats, so our team has the time to perfect this technique for use later in preventing a planetary disaster," says study co-author Vladimir Yufa, an associate professor at the departments of Applied Physics and Laser Systems and Structured Materials, MIPT. "We're also looking into the possibility of deflecting an asteroid without destroying it and hope for international engagement."

The paper reporting the results of the study was published in the Russian edition of the Journal of Experimental and Theoretical Physics by a team of researchers from Rosatom -- a Russian atomic power state corporation -- as well as from MIPT and the Space Research Institute of the Russian Academy of Sciences. The two Rosatom institutes involved in the study are the All-Russian Scientific Research Institute of Experimental Physics and the Troitsk Institute for Innovation and Fusion Research.

kvs wrote:Silly journalists never gave us the scaling relation.   What would it take to destroy a 2000 m metorite?    Looks like something much bigger
than Tsar Bomba will be needed.     Nuclear devices in this class are very poorly researched.   Tsar Bomba failed its predicted yield by over
40%.   Who says military development is bad: we need more development of nukes in the 100s of megatons sizes.    Being able to build
a 1 teraton device would be rather worthwhile.  

Not only do you get to wipe out some exceptionalist cancer afflicting the planet in one stroke, you also can save the planet from an extinction
class meteorite.  

kvs wrote:Silly journalists never gave us the scaling relation.   What would it take to destroy a 2000 m metorite?    Looks like something much bigger
than Tsar Bomba will be needed.     Nuclear devices in this class are very poorly researched.   Tsar Bomba failed its predicted yield by over
40%.   Who says military development is bad: we need more development of nukes in the 100s of megatons sizes.    Being able to build
a 1 teraton device would be rather worthwhile.  

Not only do you get to wipe out some exceptionalist cancer afflicting the planet in one stroke, you also can save the planet from an extinction
class meteorite.  

The-thing-next-door wrote:
The RDS-220 was modified in order to reduce its blast yeal form 100 megatons to 50 in order for the pilotys that dropped it to survive.

Imagine how precise must have be servos to move laser optics to hit something like 1x5meters rockst coming with 1,800m/s say 10 kilometers away?

just admit it, it's ugly

Traveling at 20 kilometers per second, such giants pose a threat of obliterating all life on Earth.

Not only do you get to wipe out some exceptionalist cancer afflicting the planet in one stroke, you also can save the planet from an extinction
class meteorite.

kvs wrote:Tsar Bomba failed its predicted yield by over 40%.