Nothing in particular. If there is any delay, it’s in the J-15 production batch.

According to sources the Chinese stole terabytes of data concerning the F-35. This includes blueprints, specs and the detailed internal configuration of this aircraft. And you are naive enough to believe that the Chinese ignored all this data in the design of the J-31?. Look at that line drawing posted by paralay and reconsider your response.

“… the J-31 is modeled on secret blueprints of the American F-35 stolen by Chinese cyber spies. Having pilfered terabytes of data about the F-35’s design and operational capabilities, Beijing scheduled the J-31’s maiden flight as if to underscore that it robs America blind with impunity….”

http://online.wsj.com/articles/chinas-cyber-theft-jet-fighter-1415838777

America is stupid to allow such theft to occur. You want to talk respect then respect those hard working engineers, staff and others working in American aerospace. SAC designed their J-31 by standing on their shoulders. And as Deino showed in the pictures he posted above, SAC and the Chinese can hack into designs but even after obtaining the data cannot execute.

I’ve read as much of this as anyone else has and consider that they will use everything they can from what they hacked in the development. I will tell you that most of these wsj articles don’t arrive at correct conclusions based on given evidences.

In reality, the stuff they took is far more useful in coming up with radar or air defense system to “find” F-35 or using their configurations and such to understand what makes F-35 a stealth aircraft or such. They can’t copy it because they don’t have domestic suppliers to produce the same parts. They don’t have the same materials, the same engines, the same machineries and tooling, the same electronics and such. F-35 is said to have 24 million lines of code. Even if China was able to steal 90% of that, I can tell you right now it will be completely useless on FC-31. If you work in the software industry, I’m sure you’d agree with me on this. Without this brain, you simply can’t replicate the flight control system, MMI or the integrated combat system (the brain) of F-35. The most they could do steal is the high level software architecture of F-35, but that would be a general aid to all of Chinese programs, not just FC-31.

Simple. J-31 is an attempt to COPY what the Americans have developed on the F-35. And as anyone knows a copy, a Xerox if you will, is never as strong as the original. Every significant feature on the J-31 is a feature first developed by the Americans.

Does anymore need to be said?

China is just trying to keep up and the world understands.

or they took a look at other planes and figure that they serve as good places to start their design and they move forward from that. They still have to go through all the design process, the wind tunntel testing, the flight tests, the redesigns and everything. At the end of the day, Chinese air force has certain flight requirements. This project won’t go forth until the design demonstrate that it can satisfy those requirements.

If China actually can just copy F-35 without spending all the money to develop it, it would do it in a heartbeat. Why wouldn’t it?

F-22 is much draggier? At what speeds? What conditions? And how do you know this? And how does the Typhoon’s sales have anything to do with its performance? Or is that just more unsubstantiated bullcrap you’re pulling out of your rear end?

And T-50 won’t be much heavier than a MiG-29M? What, based on a side picture? Do you even read your posts?

Back to the J-31, what are the planned thrust figures of the WS-13 engines? Are they even being seriously developed? Regarding the RD-93, is it this smokey when fitted on the JF-17?

WS-13’s planned figures are slightly more than RD-93, but since it’s not really in production, we don’t know what it is. And we don’t know when it’s going in production either, because it certainly hasn’t shown up anywhere that I can see. I would imagine that it has to go into service at some point, since the Lijian UCAV prototypes are also likely to use it.

Spending too much time at this point analyzing the flight performance of FC-31 is pretty strange to me, since it’s a technology demonstrator that’s at least 10 years away from joining service.

There is an engine designed for FC-31, but that is at least 10 years away and they still haven’t started production on WS-13. Which is why I said FC-31 is at least 10 years away from joining service.

Yeah, China doesn’t have a history of acquiring small (and sometimes very large!) quantities of Soviet/Russian equipment.

There is no way China was interested in several Su-35 like Rosoboronexport reported.

China, where Government and State-Sponsored media are always telling the truth. In fact, they are known for it. 🙂

Btw, what Russian officers have said the sale is happening?
Do our Chinese friends still have trouble grasping the difference between military officials, Rosoboronexport officials, and media-stories written by journalists?

It is hilarious how defense journalists (known for generally making goofs whatever country employs them) bring up such defensive feelings in the fanboys.

That’s the way that Russians would look it I guess. Here is the thing, we’ve been reading for the past 5 years from Russian news that China wants to purchase Su-35. In some cases, it seemed like they were saying the sale was all but a done deal.

And honestly, it makes less and less sense for China to buy it as time goes on. They were far more likely to buy Su-33 back in the days and the Russians news even reported the deals were completed, but do you think any Su-33s with PLANAF these days? This story gets reports every 6 months to a year.

And in our SDF forum, we constantly have Russian posters coming over repeating this news over and over again. After a while, you have to think about how Chinese posters would receive this news.

Give it a rest already. Until there is real evidence, it just sounds like loud noise to keep repeating that you are talking and this might go through. We know they are talking. China always talks to Russia about military cooperation. I’m sure they talk about Su-35 all the time, but that doesn’t mean a sale has happened. China has also been trying to sell T/R modules and AESA radars to Russia. Do you see the Russian news boasting about that? But go check one of the strategycenter article and one of many articles by kanwa (who only seems to interview his Russian friends), you see that’s happening also.

Just because they are talking, do we need to hear more about it?

Flanker is very complex aircraft. considering the amount of internal fuel and weight/performance. I am not surprized it take so long to master it by SAC.
I will not be surprized if internal fuel, weopon load/performance of J-20 is less than Flanker.

And I understand that, but F-35 is even more complex. What makes people think SAC can create a stealth fighter based just on hacked data just baffles me.

Could you expand on this? Interested but ignorant! 😮

Very interesting, please elaborate. I don’t think you meant that J-11B got beaten by J10A? Please provide source if possible, Chinese source is fine.

Not only by J-10A, they got hammered by J-11A also. Mind you, they were up against the 2nd division J-11A, which is China’s best trained flanker regiment. But the first division is also supposedly an elite division. And they have been flying J-11B for a couple of years now. Even if we discount some of that to the early trouble that they had with J-11B (guessing 2007 to 2010, there were continuous news of problems), they still had flown J-11A for a long time before that.

just commenting on one thing here and I’m not saying anyone is really guilty of it, but I’ve seen the claim that SAC managed to design this aircraft based on the information they hacked from Lockheed everywhere on the internet.

If anyone has seriously followed SAC’s struggles in developing J-11B, J-15 and J-16, they would have less confidence in SAC’s copying abilities. China has had Su-27s for 20 years and all of the technical documentations and production line for Su-27s for 16 years and they’ve only barely managed to deliver J-11B into service for about 2 years. And based on J-11B performance in the past year, it’s hard for me to call this project a success. And that’s when they’ve got all the blue prints, production tooling, Russian produced parts. And somehow, some people believe SAC can just somehow magically reproduce an aircraft just relying on data they hacked from Lockheed Martin despite have totally different engines, aircraft material, design objectives and electronics.

Also, even though CAC and SAC are competitors within AVIC-1, they are still cooperative in the sense that they do share designs. For example, SAC is said to have been fairly involved with the J-20 project.