J-20... The New Generation Fighter II

siegecrossbow said:

Who wants to buy a J-20 scale model?

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apparently the term fy js (without the space in between) triggers some sort of filter and gets changed into ****.... so yes it's

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js.cn without the space. I'll look into this problem.

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Mods note.. There is a spam filter in the forum. That is more than likely the reason for the ******

bd popeye

Roger604 said:

The Russians probably won't make an outcry because China is not selling the AL-31F to other countries. It will probably take Russians years to come to realize China has already reverse engineered AL-31F.

It's pretty obvious to me the fact that SAC is using FWS10 while CAC is using AL-31F is no mere coincidence. This is all politics! There are too many AL-31F variants running around (not matching ) confirming the existence of "indigenous AL-31F."

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And I suppose the Russian's intell are actually sleeping when even people in this forum knows about it and they didn't... which is kind of like, all those Russian ought to be shot.

This is something that is impossible. If even you know about it, so will the professionally trained intell units in Russia or any other country. I think the Chinese did come up with something that might look like or even function like the AF-31, but there are sustaintial difference that prevent anyone from crying out that the product was a mere reverse engineered or modified product that are basically Russians.

Roger604 said:

According to the Jane's article, they already extended the service life of AL-31F by a large factor. Presumably this means they replaced key components like the turbine blades. It seems they know this engine in and out so well that it's not difficult to produce a replica or improved variant.

The Russians probably won't make an outcry because China is not selling the AL-31F to other countries. It will probably take Russians years to come to realize China has already reverse engineered AL-31F.

It's pretty obvious to me the fact that SAC is using FWS10 while CAC is using AL-31F is no mere coincidence. This is all politics! There are too many AL-31F variants running around (not matching ) confirming the existence of "indigenous AL-31F."

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it was nothing unusual. They extended it from 900 hours to 1500 hours. Western engines go far longer than that. It was just a typical Chinese bs piece that I see here and there. There is no question that Chengfa is a very good maintenance and repairs shop for AL-31 engine. It is in fact the largest one in the world, but that does not mean they are producing original AL-31s or that China needs it to produce AL-31s. China is not reverse engineering AL-31, nor does it have the need to do so. Did you see all the J-11Bs parked outside of SAC a while ago? If they had inifinite AL-31 lying around, do you think the 2nd and 3rd regiments of J-11B/S would get delayed because of engine issue?

rhino123 said:

And I suppose the Russian's intell are actually sleeping when even people in this forum knows about it and they didn't... which is kind of like, all those Russian ought to be shot.

This is something that is impossible. If even you know about it, so will the professionally trained intell units in Russia or any other country. I think the Chinese did come up with something that might look like or even function like the AF-31, but there are sustaintial difference that prevent anyone from crying out that the product was a mere reverse engineered or modified product that are basically Russians.

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The Chinese are not doing anything illegal by overhauling and even upgrading the AL-31s they bought from the Russian either as part of a batch of flankers or as part of a batch of engine order. It's still legal even if they have replaced every single part of the AL-31s, maybe leaving out just the serial number label. The Chinese probably has no intention of reengineering the AL-31s not only because of the IP issues but also because the 1300hrs is probably the limit of the engine design without major changes. The WS-10 design based on the CFM56 on the other hand seems to hold more promise.

Quickie said:

The Chinese are not doing anything illegal by overhauling and even upgrading the AL-31s they bought from the Russian either as part of a batch of flankers or as part of a batch of engine order. It's still legal even if they have replaced every single part of the AL-31s, maybe leaving out just the serial number label. The Chinese probably has no intention of reengineering the AL-31s not only because of the IP issues but also because the 1300hrs is probably the limit of the engine design without major changes. The WS-10 design based on the CFM56 on the other hand seems to hold more promise.

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Yes I agreed with you. What I post is in response to what Roger604 had stated which I find no sense of whatsoever... especially this statement:

Roger604 said:

It will probably take Russians years to come to realize China has already reverse engineered AL-31F.

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And as TPhuang had stated, there really is no need for the Chinese to reverse engineered the engine, as they have something out there already. Plus what I am implying is that even if the WS-10 or whatever engine the J-20 are using that might look like (resemble) AF-31, it must have enough differences that would render it a totally new engines, rather then mere clone or modified version of the AF-31.

tphuang said:

It was just a typical Chinese bs piece that I see here and there. There is no question that Chengfa is a very good maintenance and repairs shop for AL-31 engine. It is in fact the largest one in the world, but that does not mean they are producing original AL-31s or that China needs it to produce AL-31s. China is not reverse engineering AL-31, nor does it have the need to do so. Did you see all the J-11Bs parked outside of SAC a while ago? If they had inifinite AL-31 lying around, do you think the 2nd and 3rd regiments of J-11B/S would get delayed because of engine issue?

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You seriously think CAC will release those AL-31 engines for Shenyang J-11B??

Consider the fierce rival between these 2 companies. Both go on their own route.
CAC will used AL-31FN engine and Shengyang will use their WS-10 engine.

If you noticed hard... There seems to be a trend of WS-10 only used by Shenyang produced aircraft. Not a single engine is install on CAC produced fighter. Even J-20 is running on AL-31. I even believe the engine on J-20 might be AL-31FN with gearbox below. It is the standard engine used on J-10.

It seems that J-10 has no problem regarding the supply of engine. They also never clarify if they export J-10, how about the approval of AL-31FN re export seek from Russia? The way they handle as though 100% of J-10 is made in China. The only conclusion I can get is they build their own engines.

Russian never has a clue of what's going on in China. All the so called insider new is just some sour grape and fantasy bashing.. Russian can only bash/complain what they saw(J-11B).
I bet Russian don't even know China is RE their engine if it really happen. All CAC need to do is to RE Al-31FN look like it and passed off as one and continue used on J-10. The Russian don't even have a clue what's going on.. They can't possibly go around asking China how many J-10 or J-20 China have? Do you think China will give a damm of this question?

Does anyone have pictures or videos of the J-20's canards moving independently of one another? I just don't feel like going through all the pictures again. Thnx in advance.

siegecrossbow said:

Does anyone have pictures or videos of the J-20's canards moving independently of one another? I just don't feel like going through all the pictures again. Thnx in advance.

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I think you already have seen this video before, in this video, in the moment before J-20 take off, it had checked it's telex flight control system, it's canards, main wings, tail wings were moving, is this you want to see?

maozedong said:

I think you already have seen this video before, in this video, in the moment before J-20 take off, it had checked it's telex flight control system, it's canards, main wings, tail wings were moving, is this you want to see?

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I want pictures or videos where the J-20's canards move independently of one another (like when one moves while the other moves in the opposite direction or remains still).