China should develop such a paint !!!

[Hafizzz]

Israel's secret new weapon?
Israel's secret new weapon? - Israel News, Ynetnews

Israeli company uses nanotechnology to develop paint that makes planes disappear off radar

Imagine for a moment what the battlefield will look like in the future. Unmanned planes flying through the air; robots fighting on the ground; smart missiles hunting down targets. Now imagine that none of this can be detected on radar screens.


It may sound fictional, but it's happening. An Israeli company called Nanoflight is currently developing a special paint that makes drones, missiles, or war craft simply disappear. Or, to be more precise, they become very difficult to detect.

The critical stage in developing the paint, which was developed in a nanotechnology lab, has recently concluded, and a successful test run was conducted this week. For the test run, a thin layer of the material was painted on dummy missiles, and radar waves aimed at them had a difficult time registering them.


The paint particles don't make the missile's detection on the radar disappear completely, but make it exceedingly difficult to positively identify the object as a missile. In the future, this development will allow any missile or jet significantly decreased radar detection.


Even though they may not entirely disappear from radar screens, this technology is a considerably more cost-effective method to evade radar detection than purchasing an American stealth plane for $5 billion.


How does it work? In order to locate objects, the radar transmitter sends out electromagnetic waves. When these waves hit an object, they are scattered in all directions, with some of them being bounced back to the radar itself. Regular signal reception indicates the existence of an object.


The nanotechnology developed envelopes the object, absorbs the radio waves emitted by the radar, and releases them as heat energy scattered in space. In doing so, the material disguises the object, making it difficult to identify by radar.


"We are only at the beginning and are discovering new worlds everyday," said Eli Shaldag, a former senior Israel Air Force official who worked on the Arrow missile project. He currently is part of the military applications department of Nanoflight.


"This is a breakthrough with the potential to change the rules of the game in the battlefield," Shaldag said.


When will the material be ready for use on war craft?


"We have already completed the main development stage. We conducted a number of tests and discovered that the particles in their nanotechnology composition do significantly neutralize the ability to detect objects that have been painted with the material. We are entering the second stage, after which we will already be able to produce the material in larger quantities."


Will this material be applicable for additional uses in the future?


"Absolutely yes. Discovery of nanotechnology materials is still in its infancy, and we are decoding the secret of this technology's power every day. We are currently working on developing an application of the material that will work with infrared so that soldiers won't be detected on night-vision goggles."



According to company officials, the material can also be used for civilian purposes.



"Just like the nanotechnology material can prevent a radar from detecting a missile, it can also prevent radiation emitted by electrical transformers from reaching nursery schools," said Nanoflight CEO Ricardo Burstein.


Burstein also noted that the material can prevent pollution through its absorption and transformation properties.


"In the future, it could be painted on sidewalks and roads in order to decrease air pollution. We are currently conducting an experiment with the City of Ramat Gan in which we are painting guardrails with the material in order to purify pollution from cars," Burstein explained.

If China and Pakistan have such nanotechnology then we will not have to live under USA and Indian threat.

 

[Nahraf]

Every new technology results in another new technology to counter it. So may be in next few years you would have new radars that can penetrate through this paint.

 

[lhuang]

Glorified RAM, thats what this is

 

[graphican]

If Israel has developed that, It is quite likely to slip into Indian Hands. Iron First tank protection system is also among top of the line Israeli tech and there were news some Asian Country is in negotiations with Israel to procure that. If this paint thing is true, expect India would have it before China/Pakistan can develop it.

 

[Vassnti]

The nanotechnology developed envelopes the object, absorbs the radio waves emitted by the radar, and releases them as heat energy

So instead of a radar target you have a big fat IR one?

 

[gambit]

So instead of a radar target you have a big fat IR one?

Not true. Absorbers do convert EM signals into heat via 'destructive interference' methods that constructed the absorber in the first place. However, EM loses power with distance, from transmitter to target, and the current IR sensor is not sensitive enough to pick up residual heat from said 'destructive interference'.

http://en.wikipedia.org/wiki/Radar-absorbent_material

...the suspended carbon particles promoting destructive interference.

This is still passive EM interference and for a flight capable object, the coating cannot be thick enough to become a weight penalty. This mean this coating, although more advanced than current absorber technology, will still be bandwidth limited.

 

[BATMAN]

Even if such a tech. exist stealth plane must keep its own radar off to keep (close) invisible to opponent radar.

 

[CardSharp]

Not true. Absorbers do convert EM signals into heat via 'destructive interference' methods that constructed the absorber in the first place. However, EM loses power with distance, from transmitter to target, and the current IR sensor is not sensitive enough to pick up residual heat from said 'destructive interference'.

Radar-absorbent material - Wikipedia, the free encyclopedia

This is still passive EM interference and for a flight capable object, the coating cannot be thick enough to become a weight penalty. This mean this coating, although more advanced than current absorber technology, will still be bandwidth limited.

Besides friction from going mach 1 is orders of magnitude higher than any heat produce from conversion.

 

[gambit]

Even if such a tech. exist stealth plane must keep its own radar off to keep (close) invisible to opponent radar.

Does not matter much...

LORAN - Wikipedia, the free encyclopedia

LORAN (LOng RAnge Navigation[1]) is a terrestrial radio navigation system using low frequency radio transmitters that uses multiple transmitters (multilateration) to determine the location and speed of the receiver.

Navigation via active transmitters is nothing new as you can see above with LORAN. A set of seeking radars is no different. An aircraft can have its radar off and through passive sensor like the radar warning receiver (RWR) which can detect the edges of those seeking radar and move around them.

---------- Post added at 06:44 AM ---------- Previous post was at 06:43 AM ----------

Besides friction from going mach 1 is orders of magnitude higher than any heat produce from conversion.

What make you think the aircraft MUST be at Mach?

 

[CardSharp]

[/COLOR]
What make you think the aircraft MUST be at Mach?

Look I know you like arguing or whatever but this is just retarded. I just gave mach 1 as a pretty standard cruising speed speed for a fighter. The fact is a car driving down the highway will generate more heat from friction on its surface than the conversion from radar to IR.

 

[gambit]

Look I know you like arguing or whatever but this is just retarded.

Nope...Just debunking 'Chinese physics'.

I just gave mach 1 as a pretty standard cruising speed speed for a fighter.

Is this from extensive personal experience? Air density, as in altitude, affect the Mach number, so your assertion that these fighters must be at Mach is nothing but a baseless one. The F-117 was subsonic and it was effective enough.

The fact is a car driving down the highway will generate more heat from friction on its surface than the conversion from radar to IR.

This is a gross misunderstanding of EFFECTIVE infrared detection, meaning that in order for any sensor to maintain target lock via infrared, there must be -- over time -- a persistence of infrared emission, like a jet engine in power. The greater that heat source, the shorter the infrared wavelength and that is why the majority of IR seekers are designed with a preference for jet engines. Infrared emission from friction heat may not have the sufficient wavelength and may not be persistent. In a head-on engagement, infrared emission from the exhaust gas, not from the engine exhaust structure or afterburner flame, may provide the sensor with the most prominent IR source over leading edge friction infrared.

New multiple wavelength IR detector for missile warning systems

New multiple wavelength IR detector for missile warning systems
Mar 29, 2010

Sofradir releases Altair MWIR-MWIR, a new multiple wavelength IR detector for missile warning systems. Altair MWIR-MWIR provides dual visibility in the 3-4 and 4-5 micron wavebands, bringing new detection advantages in a single piece of equipment

Sofradir, a developer and manufacturer of advanced infrared detectors for military, space and industrial applications, announced today that it has released Altair, a new dual-band MW-MW IR detector. Altair MWIR-MWIR operates in two mid-wave bandwidths, 3-4 µm and 4-5 µm, allowing users to better identify objects and thereby reduce the number of false threats identified. The dual-band MW-MW IR detector also enables more accurate temperature measurement of targets. Altair MWIR-MWIR first shipped in early January to a European customer. Production ramp-up is expected in mid 2011.

Lead(II) sulfide - Wikipedia, the free encyclopedia

At room temperature, PbS are sensitive to radiation at wavelengths between approximately 1 and 2.5 µm. This range corresponds to the shorter wavelengths in the infra-red portion of the spectrum, the so-called short-wavelength infrared (SWIR). Only very hot objects emit radiation in these wavelengths.

Indium antimonide - Wikipedia, the free encyclopedia

The indium antimonide detectors are sensitive between 1-5 microns wavelengths.

An 8-14 micron infrared astronomical photometer - CaltechAUTHORS

A system for measurement of 8-14 µm infrared emission from extra-terrestrial objects is described. The photometric system utilizes a mercury-doped germanium detector cooled to liquid hydrogen temperature to achieve increased sensitivity in this spectral region.

Mercury cadmium telluride - Wikipedia, the free encyclopedia

HgCdTe can also detect in the short wave infrared SWIR atmospheric windows of 2.2 to 2.4 µm and 1.5 to 1.8 µm.

As we can see, not the entire spectrum of infrared radiation travels effectively through the atmosphere, or more precisely Earth's atmosphere laden with H2O in various densities. Each type of sensor can be cooled and cooling will increase bandwidth somewhat but currently IR sensor remain far inferior to radar in many ways, including bandwidth.

Infrared - Wikipedia, the free encyclopedia

Mid-wavelength infrared (MWIR, IR-C DIN) also called intermediate infrared (IIR): 3-8 �m. In guided missile technology the 3-5 �m portion of this band is the atmospheric window in which the homing heads of passive IR 'heat seeking' missiles are designed to work, homing on to the IR signature of the target aircraft, typically the jet engine exhaust plume.

And that is with the preference for the much larger and concentrated engine exhaust IR source over the flight control surface leading edges that come into contact with air flow to create said friction. An aircraft at subsonic and at airliner cruising altitude will not produce sufficient leading edge friction IR source unless the IR sensor is within the human pilot visual range anyway. At this close, even sun glint off the canopy will be enough for the missile's IR sensor.

If you stand directly a few meters in front of my jet and I have 'weight-off-wheels', either through the aircraft being on jacks or opened 'weight-on-wheels' circuit breakers, I can transmit full power and perhaps you will feel some microwave induced heat on your skin. Stand there long enough and you may become a eunuch...!!! But over tens of km or more, because of the inverse square rule...

Important Rules/ Facts about Radar

The inverse square rule states that the decrease in strength of a radar signal is inversely proportional to the square of the change in distance from the antenna.

...The power of that transmission will not be enough to melt a snowflake by the time it reach the target. Not only that, any seeking radar will do so in a mechanically or electronically sweeping motion, making any contact with this 'stealth' aircraft as very short duration, so any heat resulting from a radar absorber's destructive interference property will not manifest itself on the aircraft's surface.

Here is an example of the diversity of IR sources on an aircraft and their emission levels...

THE LONG RANGE PENETRATOR (B-52/B-1/ATB)

Further...There are substances that can be applied to affect and reduce surface friction IR emissivity. Zinc sulfide is one...

Zinc sulfide - Wikipedia, the free encyclopedia

Zinc sulfide is also used as an infrared optical material, transmitting from visible wavelengths to over 12 micrometres.

Zinc Sulfide (ZnS) | II-VI Infrared

ZnS grown by chemical vapor desposition (CVD) at II-VI Infrared exhibits exceptional fracture strength and hardness leading to its frequent choice for military applications or other harsh environments. This material is often used in the 8 to 12 microns region. Its high resistance to rain erosion and high-speed dust and particulate abrasion makes it particularly suitable for exterior IR windows on aircraft frames.

The 'IR windows' phrasing does not literally mean window but to mean external areas of the aircraft -- wing leading edges -- that could produce an IR source under certain environmental conditions. It is the equivalent of 'window of opportunity' or 'moments of detectability'. There are more exotic compounds but do not bother asking what they are.

 

[dingyibvs]

omg gambit...you're so funny lol

 

[CardSharp]

omg gambit...you're so funny lol

shhh ignore him, maybe he'll leave.

 

[gambit]

shhh ignore him, maybe he'll leave.

What good will that do? This is not about you or me. This is about 'Chinese physics', your ignorance and an open forum where anyone can see them...

 

[CardSharp]

What good will that do? This is not about you or me. This is about 'Chinese physics', your ignorance and an open forum where anyone can see them...

My Chinese physics was good enough to do well in third year quantum. Who are you to judge?