Inventory of stealth technology: electronic ink to enhance the camouflage tank (Figure)
“E ink “so that the tank invisible “Sea Shadow” was stealth test ship ” Comanche “stealth helicopter ” Thunder God “stealth UAV
news alerts: Recently, stealth aircraft, stealth tanks, stealth ships are repeated newspapers, full of the network, causing people to focus on stealth technology.
In fact, since ancient times, military strategists have been in the pursuit of one’s own way on the battlefield transparent, he is not striving to make friends. Ambush mountains, night raids, is to make the enemy can not see me; person title pieces, bell horse pick, is to make the enemy can not hear me. The modern battlefield, the national army is from visible light, acoustic, radar and other all-round performance of the pursuit of weapons of stealth, from the eyes and ears to lie against the radar, and more and more “paying attention” of the detection equipment to compete, to better to preserve their own, to more effectively combat each other. This paper tries to conduct an inventory of stealth technology.
● land, camouflage, color, distort light, standing opposite you can not see me
● underwater, vibration, noise, distorted sound, you listen to not let the probe to me
● sky, absorption, scattering, diffraction radar, free to fly you could not find me
the “invisible” in the end
stealth technology can not be unwelcome: combat, throws a cloak, open an invisible car, you can see the enemy, the enemy can not see yourself, the outcome of the balance will be one-sided. Over the years, people are trying to make this scene from the dream to reality.
you can not see – the visible anti-reconnaissance, anti-infrared detection, “invisibility cloak” so magical?
in 1987, the Hollywood film “Predator,” a reflection of people’s stealth technology frenzy. Alien monster wearing a camouflage coat, visible to the anti-reconnaissance, anti-infrared reconnaissance, anti-electronic reconnaissance, camouflage automatically adjust to provide a powerful alien monster stealth capabilities.
dream back in reality. If the “stealth shirt” is a more advanced camouflage, it seeks to achieve disappear in the eyes of the enemy outside, hidden in the operational environment. So, camouflage combat clothing is the most ordinary people are familiar with a relatively early camouflage.
Recently, U.S. researchers invented the two materials, they can change the direction of light around the objects, means that the development of human cloak taken a groundbreaking step. They used a silicon nano-materials “invisibility cloak”, under the cloak of items can “disappear” without a trace!
this cloak includes two new nanoscale materials, the silicon rectangle made of light forward only after the free flow in both directions. This makes invisibility cloak completely around the bend light waves occur, as if, like water over rocks. Tests showed that when the light changes direction, is completely hidden items can be achieved.
but it also has many shortcomings need to be improved. Biggest drawback is that will leave a shadow, so the next step is to do three-dimensional cloak and destroyed all the shadows.
people can not only stealth, large equipment can also be invisible.
recently, the British company BAE Systems has developed an electronic camouflage technology that can use an “electronic ink” to let the tank “stealth.” They are installed on the tank body electronic sensors, these sensors will image the surrounding environment outside the body back to the projector, making it into the surrounding scenery, making it “instantly hide” to avoid attacks. And on the tank body image will follow the environmental change, always make sure the tanks in camouflage.
you can not hear – the noise getting smaller and smaller, allowing sound waves bend, acoustic sonar stealth shield can cheat
Typically, underwater view less than the object detected by sonar. But now, some acoustic stealth technology allows you to hear.
the United States in 1985 and development of the “Sea Shadow” stealth ship, stealth technology demonstration of the Navy in the future feasibility of the application. “Sea Shadow” ship coated with radar absorbing coating, took control of underwater noise and measures infrared radiation.
submarine itself is a stealth weapon systems to enhance its concealment of the main measures to further reduce noise levels, which control the noise source and noise from the transmission of two aspects.
countries, mainly from the current hull shape, structure, power equipment selection, and other aspects damping silencer, vibration noise. Improved power plant, control mechanical noise; improved reduction gearing to reduce noise, or the use of electric propulsion; using sound damping technology; improved propeller design or the use of water jet propulsion unit, to reduce propeller noise; improve submarine shape design, reducing water power noise; laying anechoic tiles to control noise transmission; using acoustic technology to reduce internal noise. Some nuclear submarines has been reduced to 120 db of noise below the equivalent of three sea state ocean background noise.
but not enough, now, scientists hope to use underwater acoustic “stealth shield” fool sonar. Over the years, the theory that there may be able to turn around an object without reflection or sound absorption materials.
Recently, U.S. scientists have developed a Acoustics invisible housing in a particular space in the control of sound waves and bent or twisted, hidden underwater objects in this acoustic cover of the block, even with sonar and other types of ultrasound are undetectable.
researchers designed a two-dimensional cylindrical housing, the housing consists of 16 voice lines form concentric rings, can guide the direction of sound waves. Is actually the sound waves bend to the outer jacket around the invisible. This technology can cover a wide range of wavelengths, it will be a wide range of applications.
let you test vain – the introduction of new materials, new technology, hidden armed aircraft, missiles, stealth increasingly widespread use of the area
modern stealth technology was first used in aircraft, stealth Aircraft of the fastest growing and most mature.
prominent representatives of the United States has developed several stealth aircraft. F-117 stealth measures taken is the shape of the invisible primary. Its shape is very strange, completely multi-faceted diamond cutting technology polygonal design, the whole body all the straight lines. The advantage is that the shot to the radar scattering in all directions, so difficult to find other radar targets. B-2 stealth bomber radar cross section of only 0.1 square meters, this is a “flying wing” shape, and use a lot of carbon fiber composite materials and special absorbing coating results.
from the F-117 to F-22, the U.S. stealth technology is through a “Shape + Paint + Materials” in path.
United States had developed “Comanche” stealth helicopter is the world’s first true stealth helicopter, the radar cross section is only 1% of other helicopters, is “Apache” and 1/400, IR is characterized by the latter 1/4.
as stealth weapons made a great contribution to the “stealth paint.” Currently, the stealth coating has been widely used in aircraft, warships, tanks and other equipment, appearance, become anti-radar detection and prevention of leakage or electromagnetic interference and effective means.
which plasma stealth coatings in aircraft flight emit strong radiation, high-energy particle outer surface of the air vehicle to promote the formation of plasma ionized layer, its microwave, infrared radiation, have a good absorption.
enemy radar to detect electromagnetic radiation exposure to the plasma cloud around the aircraft after a major cause two phenomena: First, part of the electromagnetic energy is absorbed by the plasma cloud. Because electromagnetic waves through the plasma cloud in the plasma of charged particles with the interaction energy will be passed to the charged particles, their energy is greatly attenuated; Second, plasma clouds can produce diffraction of electromagnetic waves, electromagnetic waves around the plasma cloud, does not produce reflections, which will greatly reduce the reflection of electromagnetic signals, so that the radar is difficult to find hidden in the plasma cloud in the aircraft.
infrared stealth coating nanoscale organic coatings for stealth radar absorbent paint. Nano ultra-fine powder can not only absorb radar waves, can absorb visible light, infrared, you can avoid radar detection, but also the role of infrared stealth.