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Did China steal stealth technology from US and Russia for Chengdu J-20?

A few weeks back we saw the internet buzzing with photographs showing  Beijing’s first stealth fighter jet, the Chengdu J-20. The J-20 prototype was first photographed when it was preparing for high-speed taxing trial at the CAC airfield on December 22, 2010. Chengdu J-20 China has also carried out the test flight of its advanced laser-evading stealth fighter. The J-20 stealth fighter is proof to China’s rapid advancement in military aviation technology. It was also highly speculated that China stole the J-20 design from F-22 Raptor and Mig 1.44 .Lets go ahead and look into the details.

Similarities with the MIG-1.44

J-20

The latest images show some startling similarities between the Chinese  J-20 and canceled Russian MiG-1.44. Both have similar style of delta wing canard configurations and V-Shaped tail section with closely mounted engines. The frontal aspect looks extremely similar to that of the American F-35 JSF with DSI intake which has now become common on all new Chinese designs. However there are several differences that show it is not as optimized for air combat as the MiG. The control surfaces on its hinged ventral fins and on its tail booms flaps are absent on the J-20. Also the MiG was not compromised by stealth considerations as  J-20.

MIG-1.44

The J-20 might do okay on its current configuration but the MiG-1.44 had more control surfaces as a result of a very demanding high AoA behavior. The MiG-1.44 is not stealthy as the F-22 but it is for sure very agile for its size and weight as its inlet is designed to have more side slip resistance and better  AoA behavior. The F-22 and J-20 have chines that stabilize them at high AoA and keeps them stable at yaw but the MiG.144 was designed as a pure aerodynamic aircraft with little stealth applied.

Similarities with the F22-Raptor

J-20

The canopy looks like a 1:1 carbon copy of that on the F-22, right down to the v-shaped cylinder  on the forward part of the frame. The J-20 has a canard delta layout (like Chengdu’s J-10) with two canted, all-moving vertical stabilizers (like the T-50) and smaller canted ventral fins. The stealth body shaping is similar to that of the F-22. The main landing gears retract into body-side bays, indicating the likely presence of F-22-style side weapon bays ahead of them. The ground clearance is higher than on the F-22, which would facilitate loading larger weapons including air-to-surface munitions. The cant angles are greater than they are on the Lockheed Martin F-35, and the frameless canopy is similar to that of the F-22.

F-22

The flat body sides are aligned with the canted tails, the wing-body junction is clean, and there is a sharp chine line around the forward fuselage. The cant angles are greater than they are on the Lockheed Martin F-35, and the frameless canopy is similar to that of the F-22. On a stealthy aircraft you need use internal volume, longer ducts that are surrounded by fuel and weapons bays. Features at the rear of the aircraft—including underwing actuator fairings, axisymmetrical engine exhausts and the ventral fins—appear less compatible with stealth, so the J-20 may not match the all-aspect stealth of the F-22. There are two possible explanations for this: Either the aircraft seen here is the first step toward an operational design, or China’s requirements do not place as much stress on rear-aspect signatures.

Cyber espionage theft speculations

Computer spies had broken into the Pentagon’s $300 billion Joint Strike Fighter project, the Defense Department’s costliest weapons program ever. Computer systems involved with the program appear to have been infiltrated at least as far back as 2007, according to people familiar with the matter. Evidence of penetrations continued to be discovered at least into 2008. The intruders appear to have been interested in data about the design of  USAF planes, its performance statistics and its electronic systems. The intruders compromised the system responsible for diagnosing a plane’s maintenance problems during flight, according to officials familiar with the matter. However, the plane’s most vital systems — such as flight controls and sensors — are physically isolated from the publicly accessible Internet.
The intruders entered through vulnerabilities in the networks of two or three contractors helping to build the high-tech fighter jet, according to people who have been briefed on the matter. Lockheed Martin is the lead contractor on the program, and Northrop Grumman Corp , BAE Systems PLC also play major roles in its development. The spies inserted technology that encrypts the data as it’s being stolen , as a result, investigators can’t tell exactly what data has been taken.

Amongst high speculation of Chinese involvement in these events , investigators traced the penetrations back with a “high level of certainty” to a known Chinese Internet protocol, or IP, addresses and digital fingerprints that had been used for attacks in the past. A Pentagon report issued had stated that the Chinese military has made “steady progress” in developing online-warfare techniques. China hopes its computer skills can help it compensate for an underdeveloped military, the report said. The Chinese Embassy said in a statement that China opposes and forbids all forms of cyber crimes.” It called the Pentagon’s report “a product of the Cold War mentality” and said the allegations of cyber espionage are “intentionally fabricated to fan up China threat sensations.”

There were also reports on some forums that F-22 was spotted over Beijing. This photograph looks suspicious


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About Cavin Dsouza

  • Tomas

    Well if the blueprints and data about F-22 was really stolen, US can blame only themselves, for low level security of such big projects…

    • me

      Well, the US is to blame for allowing so many people of Chinese origin to work on top-secret projects. It’s espionage, pure and simple.

  • Joe

    rediculous………. designing, developing and manufacturing a new fighter need a long long time, How come a 2007 internet hacking (if there were one) can help such a big project?? Please have some basic education.

  • Typhoon

    To tell you the truth, most Taiwanese people will run or give themseleves up when Chicoms make a grab for Taiwan.____99% of Taiwan soldiers never seen combat and having live a good life and all they can do is to cry for Uncle Sam for help,__The Senior command is infiltrated with Chicom just like during the Civil War that was fought 65 years ago.
    Most of Taiwan Top Secret are already leaked to Chinese Spies. In Feb 2011, Taiwan arrested Maj Gen Lo Hsian Che for espionage for China. He is incharged of Military Commands Communication and Information Office.
    Consequently, US is very mindful not to sell the most advance weapons to Taiwan incase it secret falls into China hands.

  • Nick

    It's not the first time that China stolen techologies from western countries: I'm from Italy and in an italian forum i fournd a photo of an attack helicopter form China wich is very similiar to the italian A129 Mangusta. The problem now is that China is studying technologies of E.U. countries and U.S.
    I don't know if you know the numbers of the spies from China in USA: A captured spy when it was in Canada declared that there are a lot of spies in Europen Union nations,Australia, Japan and U.S.!!
    So we haven't to be surprised of this things for my opinion.

  • godzillajet

    Just look at it! MiG 1.44 tail and F-22 front.

  • ANONYMOUS

    The Chinese copy everything! Why can't they think of their own ideas?

  • ANONYMOUS

    If the chinese copy everything, what is paper, what is gunpowerder, what is the art of printing, what is basically everything?

    If you say the chinese copied the F-22 from the US, even if they did, that shows superiority, because the ability to reverse engineer a technology is much more difficult then to create technology, and of course, just looking at the F-22 can't allow you to copy it, even with blueprints, and everything, the technology doesn't just come to you.

    Really, china has been around for 5000 years, its more likely that western countries are copying chinese technology then the other way around.

    • OBAMANATION

      THE CHINESE ARE PURE EVIL !!! EVERY TECHNOLOGY THEY HAVE , THEY STOLD. IT'S LAW, ANYTHING MADE IN CHINA, CHINA RECIEVES THE PATTEND. THE CHINESE ARE EVIL, THEY WILL USE THE RUSSIANS TO DESTROY AMERICA. THEN THEY WILL DESTROY THE RUSSIANS. THE TECHNOLOGIES THEY SHOULD INVEST IN ARE HYGENE PRODUCTS.. ECT… AND NOW THAT WE HAVE A WUSS IN COMMAND, WE ARE DOOMED. LET'S HOPE IF WE GET NUKED. THE CHINESE GET NUKED AS WELL AS THE RUSSIANS & MUSLIMS. IF WE CAN NOT LIVE ON THIS PLANET, NEITHER SHOULD THEY. THEY WANT A BIG STICK IN THE WORLD BECAUSE THEY ARE HUNG LIKE GIRL SCOUTS.. I SAY NUKE THEM ALL !! BUT SINCE WE HAVE A POSSIBLE CLOSET MUSLIM IN POWER HELPING TO TOPPLE US. FORGET ABOUT IT. STOP ALL OUT SOURCING AND JUST GIVING OUR WEALTH TO THESE VILE PEOPLE. AND IF WE ARE ATTACKED, WE NEED TO NUKE !!

      • ANONYMOUS

        Little kid, here's a tip for life. Arrogance are roots for all stupidity.

      • F22wins

        I am Chinese. From my point of view, the Chinese are not evil! Far from evil. They are too peaceful and thus coward. I would far prefer power, aggression and ruthlessness like the US.

      • BloodANgelic

        ^ typical american redneck faggot.

    • TaoOfDow

      You said "If you say the chinese copied the F-22 from the US, even if they did, that shows superiority, because the ability to reverse engineer a technology is much more difficult then to create technology … "

      I disagree – reverse engineering is not much more difficult, it's just work. Having the ideas (even you point to China's glorious past with paper, gunpowder etc.) is magic. Chinese are groomed to not have new ideas, since that gets them killed i.e. if they think differently than than those in power.

      Chinese think stealing everything is totally acceptable, because in their minds, the end justifies the means. When they've stolen everything, and there is parity with other countries, they will be left with the glory of working themselves to death to win -NOT creating anything new – steal on my little Chinese friends.

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