Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
download ppt on nano enabled coating makes aircraft invisible
#1

download ppt on nano enabled coating makes aircraft invisible

Abstract
Nanomaterial use in construction, in coatings, in site remediation, and on invisible planes.The Israel-based YnetNews is Reporting that an Israeli company called Nanoflight has successfully run a test on dummy missiles that were painted with the nano-enabled coating and have shown that radar could not pick them up as missiles.

The nanocoating achieves its radar trickery by absorbing the radio waves emitted by the radar and scattering them as heat energy enough so that when the radar gets the bounced back signal it is not regular enough to indicate an object. A spokesman for Nanoflight, Eli Shaldag, is quoted in the article indicating that the company is in the second stage of its development process after which they will be able to produce the coating in larger quantities.

Construction
Nanomaterial use in construction, in coatings, in site remediation, and on invisible planes. Certain nanomaterials can improve the strength of concrete, serve as self-cleaning and self-sanitizing coatings. These paving slabs are coated with titanium dioxide (TiO2). Titanium dioxide is a photo catalyst; it uses sunlight to accelerate a naturally occurring. An Israeli company has developed a paint for airplanes that can make them invisible to radar.

Air Force Research Laboratory
The Air Force Research Laboratory (AFRL) is the Air Force s only organization wholly dedicated to leading the discovery, development, and integration of war fighting technologies for our air, space and cyberspace forces. AFRL traces its roots back to the vision of early airpower leaders who understood science as thekey to air supremacy. The passionate commitment of our people to realize this vision has helped create the world's best air, space and cyberspace force.

Mission
AFRL s mission is leading the discovery, development and integration of affordable war fighting technologies for America s aerospace forces. It is a full-spectrum laboratory, responsible for conceiving, planning and executing the Air Force s science and technology program. AFRL leads a worldwide government, industry and academia partnership in the discovery, development and delivery of a wide range of revolutionary technologies. The laboratory provides leading-edge war fighting capabilities keeping our air, space and cyberspace forces the world s best.

Personnel and Resources
The lab employs approximately 5,400 government people, including about 1,300 military and 4,100 civilian personnel. It is responsible for the Air Force s science and technology budget of nearly $2 billion including basic research, applied research, advanced technology development and an additional $1.7 billion fromAFRL customers.

Organization
AFRL accomplishes its mission through nine technology directorates located across the United States, through the Air Force Office of Scientific Research, and with the support of a central staff. The directorates are: Air Vehicles Directorate, Directed Energy Directorate, Human Effectiveness Directorate, Information Directorate, Materials and Manufacturing Directorate, Munitions Directorate, Propulsion Directorate, Sensors Directorate, and Space Vehicles Directorate.

Personnel and Resources

The lab employs approximately 5,400 government people, including about 1,300 military and 4,100 civilian personnel. It is responsible for the Air Force s science and technology budget of nearly $2 billion including basic research, applied research, advanced technology development and an additional $1.7 billion from AFRL customers.

Explanation

Carbon Nanotubes (CNTs), graphene and their compounds exhibit extraordinary electrical properties for organic materials. Have a huge potential in electrical and electronic applications such as photovoltaics, sensors, semiconductor devices, displays, conductors, smart textiles and energy conversion devices (e.g., fuel cells, harvesters and batteries). Applications of Carbon Nanotubes and Graphene for electronics applications. Depending on their chemical structure, carbon nanotubes (CNTs) can be used as an alternative to organic or inorganic semiconductors as well as conductors, but the cost is currently the greatest restraint. In electronics, other than electromagnetic shielding, one of the first large applications for CNTs will be conductors. In addition to their high conductance, they can be transparent, flexible and even stretchable. Here, applications are for displays, replacing ITO; touch screens, photovoltaics and display bus bars and beyond.

In addition, interest is high as CNTs have demonstrated mobilities which are magnitudes higher than silicon, meaning that fast switching transistors can be fabricated. In addition, CNTs can be solution processed, i.e. printed. In other words, CNTs will be able to provide high performing devices which can ultimately be made in low cost manufacturing processes such as printing, over large areas. Challenges are material purity, device fabrication, and the need for other device materials such as suitable dielectrics. However, the opportunity is large, given the high performance, flexibility, transparency and printability. Companies that IDTechEx surveyed report growth rates as high as 300% over the next five years. New developments regarding the production of pure CNTs and the separation of conducting and semiconducting carbon nanotubes are given in this updated report. Graphene, a cheap organic material, is being enhanced by companies that are increasing its conductivity, to be used in some applications as a significantly cheaper printed conductor compared to silver ink.
Reply

#2
A new nanostructured coating could be used to make paints for stealth aircraft that can t be seen at night and that are undetectable by radar at any time of day. The coating, made of carbon nanotubes, can be used to cloak an object in utter darkness, making it indistinguishable from the night sky.

Carbon camo: A coating of carbon nanotubes, visible in the scanning-electron micrograph at top, makes the tank pattern invisible under a light microscope, bottom.
Carbon nanotubes have many superlative properties, including excellent strength and electrical conductivity. They are also the blackest known material. The long straws of pure carbon, each just a few nanometers in diameter, absorb a broad spectrum of light from radio waves through visible light through the ultraviolet almost perfectly. Researchers are taking advantage of this perfect absorbance in highly sensitive imaging sensors and other prototype devices.

L. Jay Guo, professor of electrical engineering and computer science at the University of Michigan, realized it could be useful as a kind of camouflage. Stealth aircraft, he notes, are often painted black or dark blue to hide them from view.

Guo s group grew sparse forests of vertical carbon nanotubes on the surface of various three-dimensional objects, including a silicon wafer patterned with the shape of a tiny tank. The nanotubes make the objects appear completely flat and black, and they disappear against a black background. The nanotube-coated objects neither reflect nor scatter light.

This effect works, Guo says, because the nanotubes are perfectly absorbing, and because when they are grown with some space between them, as in his experiments, their index of refraction is nearly identical to that of the surrounding air. This means that light won t scatter out of the nanotubes without being absorbed. The work is described in the journal Applied Physics Letters.

Guo says if an airplane painted with the nanotube coating were hit with a radar beam, nothing at all would bounce back, and it would appear as if nothing were there.

This type of cloaking is very interesting, especially since they have demonstrated operation in air, says Ray Baughman, director of the MacDiarmid NanoTech Institute at the University of Texas at Dallas. Baughman recently demonstrated that nanotubes can form an invisibility cloak when they re heated up under water. The heat from a sheet of nanotubes affects the optical properties of the surrounding water, creating the illusion of invisibility.

Invisibility cloaks shield objects by manipulating incident light so that it simply flows around them. Materials that can achieve this must be made very painstakingly and typically only work with a very narrow spectrum of light say, microwaves, or red or green light. Nanotubes are relatively easy to make, and work across a broad spectrum.

However, it s not yet practical to grow forests of nanotubes on the surface of an airplane directly growing such forests is a high-temperature, high-pressure process done in chambers much smaller than an airplane. But Guo says it should be possible to grow the nanotubes on the surface of tiny particles which can then be suspended in paint.
Reply

#3
To get full information or details of nano enabled coating makes aircraft invisible please have a look on the pages

http://edutwint-nano-enabled-coating-makes-aircraft-invisible

http://edutwint-nano-enabled-coating-makes-aircraft-invisible-full-report

if you again feel trouble on nano enabled coating makes aircraft invisible please reply in that page and ask specific fields in nano enabled coating makes aircraft invisible
Reply

#4
Hi am vinayak i would like to get details on download ppt on nano enabled coating makes aircraft invisible ..My friend Justin said download ppt on nano enabled coating makes aircraft invisible will be available here and now i am living at jalna and i last studied in the college/school msscet clg jalna and now am doing BEi need help on this topic etc
Reply

#5
sir,pls provide me the full detail about the topic; Nano Enabled Coating Makes Aircraft Invisible.for my seminar
Reply

#6
requesting to provide about download ppt on nano enabled coating makes aircraft invisible
Reply



Forum Jump:


Users browsing this thread:
1 Guest(s)

Powered By MyBB, © 2002-2024 iAndrew & Melroy van den Berg.