Chengdu J-20 5th Generation Aircraft News & Discussions

[Figaro]

Yang Wei NPC interview ...

 

[cirr]

Yang Wei NPC interview ...

Straight from the horse's mouth: "supermaterials/metamaterials" have been used to make the J-20.

https://weibo.com/tv/v/G8d1ZsdZC?fid=1034:ff272776633b5cdbf79fb2f0756970bd

METAMATERIALS: COULD CHINA'S NEW 'INVISIBILITY CLOAKS' MAKE FIGHTER JETS INVISIBLE

BY CHRISTINA ZHAO ON 3/13/18 AT 9:25 AM

China is mass producing metamaterials in a state-run lab that reportedly functions as 'invisibility cloaks' and could be used to make fighter jets impossible to detect, according to local media.

A broadcast by China Central Television Station (CCTV), revealed that a laboratory in Shenzhen, in southeastern China, is manufacturing various types of highly technological materials—including invisibility, anti-burning and anti-icing cloaks.

However, the functions of these materials have not yet been disclosed. Chinese news platform Sina reported that the assembly line is directly related to the military and the materials are likely to be used to camouflage J-20 fighter jets.

Metamaterials, known in China as "supermaterials," are materials engineered to have a property that is not found in nature. They are created from assemblies of multiple elements fashioned from various metals or plastics.

Some metamaterials can bend visible light (infrared radiation) through a novel optical material that effectively means they could act as an invisibility device. According to the CCTV broadcast, those materials are now being manufactured by an assembly line and will be used to help further China’s aviation industry.

Scientists are reportedly producing the materials at the State Key Laboratory of Metamaterial Electromagnet Modulation Technology, which was established in 2011 and is based in the Guangqi Advanced Institute of Technology. According to its website, the lab has an annual production capacity of more than 107,600 square feet of metamaterial plates.

“State key” indicates the organization is state-funded or run by the Chinese government.

The Sina report also confirmed that the materials will likely be used by the military, specifically for camouflaging the J-20 fighter jets as its chief engineer Yang Wei is also on the laboratory’s academic board.

Last December, a video of a man demonstrating the abilities of a quantum invisibility cloak went viral worldwide after it was shared to Weibo, a Chinese social media platform.

Some believed the clip was authentic as Chen Shiqu, the deputy director of Criminal Investigations Bureau of the Ministry of Public Security, was the user who posted the footage. However, many doubted the validity of the clip because it did not appear on the official Chinese government website or the Criminal Investigation Bureau page.

Zhu Zhensong, a producer at Quantum Video production company, told the Liberation Daily that the video was a sham and probably edited together with a plastic cloth.

"Softwares such as Adobe's After Effects, Nuke or Blackmagic Fusion can edit the background and blend the object into it. The effect has previously seen in a lot of action movies," he said.

http://www.newsweek.com/china-says-...ts-invisible-cloaks-made-metamaterials-842167

 

[TaiShang]

China’s fighter jets to bring more surprises: J-20
chief designer

By Li Ruohan Source: Global Times Published: 2018/3/20

China’s fighter jets to bring more surprises: J-20 designer

After China's latest J-20 stealth fighter was commissioned, the country will continue to explore new fighter jets that meet national needs and create more surprises, the fighter's chief designer said Tuesday.

China will continue to support efforts to further prepare the fighter for combat, develop more versions of the fighter and explore new fighter jets, Yang Wei, a National People's Congress (NPC) deputy and chief designer of the J-20, told the press on the sidelines of the NPC annual meeting.

"There will be more surprises in future fighter jets, which will be more mechanized, information-equipped and smarter," Yang said.

The surprises include progress on the research of China's next generation of stealth fighters, which is expected to make China no longer a follower, but a leader in the development of stealth fighters, Song Zhongping, a military expert and TV commentator, told the Global Times on Tuesday.

The J-20 series is also expected to undergo renovation, such as a high thrust engine and new electronic equipment and radars, Song said.

The advanced series could help China seize air superiority in the Asia-Pacific region and safeguard national security when facing containment from the US, Japan, Australia and India, he added.

The J-20 is China's fourth-generation medium and long-range fighter jet. It was first showcased in public on a fly-by at the Zhuhai air show in November 2016, and after it was delivered to the People's Liberation Army Air Force in March 2017, it joined the military parade at the Zhurihe military training base in July 2017.

According to air force spokesperson Shen Jinke in February, air force combat troops had armed the J-20.

China's J-20 jets have several unique designs and capabilities, such as the canard configuration design that provides them greater stealth while maintaining maneuverability and its supersonic speed, Yang said. "The design allows the J-20 to fly further and with greater bomb load," he added.

The J-20 is also capable of situation awareness, warfare and cooperative combat, which shows that China's aviation industry has progressed from a "follower" to a "leader," he said.

The fighter is also a product of military-civilian integration, as its carbon fibers and metamaterials are produced by private companies, Yang said.

Carbon fibers not only provide the fighter with greater stealth, but can also reduce the aircraft's weight to allow more weapons for greater attack power, Song said.

http://www.globaltimes.cn/content/1094262.shtml

 

[cirr]

The fighter is also a product of military-civilian integration, as its carbon fibers and metamaterials are produced by private companies, Yang said.

http://www.globaltimes.cn/content/1094262.shtml[/QUOTE]

 

[BHarwana]

 

[Deino]

Phone wallpaper by songbird ....
https://www.weibo.com/ttarticle/p/show?id=2309404220047684989441#_0

+ more

 

[Deino]

 

[IblinI]

 

[Grandy]

China's new stealth fighter uses powerful materials with geometry not found in nature
Metamaterials can make the J-20 an extra stealthy electromagnetic force.
By Jeffrey Lin and P.W. Singer 5 hours ago

Can you see me?
The J-20 is being deployed to elite PLAAF units. It likely uses metamaterials to increase stealth and electromagnetic performance.
Henri Kenhmann

China's new fighter, the J-20, uses a combination of stealth and datalinks to compete with the best fighters on the planet. Now, state media says the country is also mass-producing metamaterials for the aircraft, which could make it an electromagnetic force.

What are metamaterials? In this case, we're talking about composite metals and plastics that use artificial geometry to influence the wavelengths of electromagnetic radiation, as well as elastic waves and sounds. Some metamaterials built using nanotechnology can also be used as super strength materials. In fact, optical metamaterials have already been used to demonstrate invisibility by 'redirecting' visible light around itself to avoid reflection, hence their frequent reference to the popular fiction of "cloaking" in Star Trek and Harry Potter. (No real-life cloaking shields have yet been demonstrated).

Metamaterials
Composite materials create electromagnetic properties not found anywhere in nature. The State Key Laboratory of Electromagnetic Modulation Technology, based in Shenzhen, is reportedly producing more that 100,000 square feet of the stuff a year.
CCTV2

The metamaterials on the J-20 are likely to be used for as antennas and absorbers, given that the facility making them specializes in electromagnetic tech. Metamaterial antennas can increase radiated power, resulting in longer-range and more precise radar, as well as powerful jammers and datalinks. In turn, by fine-tuning their structures, metamaterial absorbers can be engineered to absorb specific wavelength ranges, such as those from the radars of enemy fighters and missiles. Such absorbers would likely be put on areas likely to reflect radar waves, such as the edges of canards, weapon bay doors, and engine nozzles.

Additionally, metamaterials optimized for infrared radiation can improve the sensitivity of the J-20's infrared sensors for tracking missiles and aircraft. Or, in large enough quantities, metamaterials could reduce the fighter's own infrared signature.
The next generation of Chinese aviation metamaterials could further increase stealth, improve communications, sensors and jamming, and even lighten airframe weight. Yang Wei, the J-20's chief designer, told the People's Daily that China is already laying down the requirements for a sixth-generation follow-up to the J-20. Much as the USAF's envisioned futuristic Penetrating Counter Air platform, too, will likely include much more metamaterials. Popular Science.

Peter Warren Singer is a strategist and senior fellow at the New America Foundation. He has been named by Defense News as one of the 100 most influential people in defense issues. He was also dubbed an official "Mad Scientist" for the U.S. Army's Training and Doctrine Command. Jeffrey is a national security professional in the greater D.C. area.


A 'super material' that's INVISIBLE, 'invisibility cloak' metamaterial in bulk

 

[Grandy]

Quantum Invisibility Cloaks

 

[terranMarine]

Quantum Invisibility Cloaks

now visualize the J-20 having that romulan cloak (if you are a star trek fan you know what i mean) the only thing that's visible is the pilot's head

 

[Figaro]

Quantum Invisibility Cloaks

Not sure how this footage relates to the J-20. It is clearly fake and not of military usage ...

 

[cirr]

 

[Deino]

Care to explain???? PLEASE

 

[lcloo]

Let me guess, a new variant of certain bird of prey (i.e. fighter jet) , with canard wing, and a tail hook. The illustrator is suggesting a naval variant of J-20.

Note that the illustrator is the same person who posted drawings of J-10 and J-20 with new engine + variable thrust nozzle some time ago.

Remember this?