J-10 Thread III (Closed to posting)

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tphuang

Lieutenant General
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make your own conclusions....


Chinese J-10 'benefited from the Lavi project'
By Robert Hewson


5/19/2008

Russian aerospace engineers have confirmed to Jane's that China's Chengdu J-10 fighter aircraft benefited from significant, direct input from Israel's Lavi programme - including access to the Israel Aircraft Industries (IAI) Lavi aircraft itself.

In a number of interviews Jane's has talked at length with several engineers, designers and technical specialists - some of whom have been working with their Chinese counterparts for decades and have had first-hand experience on Chinese military projects. They have provided detailed accounts of the assistance given to various Chinese manufacturers and their military aircraft projects. This has included extensive design and performance modelling, wind-tunnel testing and advanced aerodynamic design input.

Senior Russian engineers who spoke to Jane's recalled their many visits to Chengdu, and elsewhere in China, some of which began in the 1980s. Jane's was told how Chengdu officials of the highest level stated how they had one of the IAI Lavi prototypes in their facilities. Describing his conversations with Chengdu concerning possession of a Lavi aircraft, one Jane's source commented: "I did not consider that to be a revelation ... doesn't everyone know that already?"

It is not possible to independently verify the Russian comments. The charge of Lavi technology transfer has been made before, but this time the claims come from individuals with sustained personal experience of the programme. Both Chinese and Israeli officials have long refuted any purported links between the J-10 and the Lavi.

They had some help from the Lavi project, but IAI left CAC by mid 1990s. It's quite clear from just looking at pictures, powerplant and dimensions, they are quite different.
 

jackliu

Banned Idiot
I think all military jet fighter have influence and help from existing ones, one can easily say Levi come from F-16, thus Levi is a copy of F-16. But how many people say this? No one, and yet not even Israel they themselves would dispute that Levi get a lot of help from F-16 designs, but vast majority of people still consider Levi to be Israel in origin.

So why is that when there has been much less clear evidence of Levi's connection with J-10, people are SO damn eager to say J-10 is a clone of Levi? I tell you why, this is because of butthurt sentiments from people who think the Chinese are only capable of copy and paste, and that if they ever come up with anything on their own like J-10 or J-20, then of course, by logic they must have cheated somehow.

Pay no attention to those people as they are only trolls.
 

kwaigonegin

Colonel
Stop posting this kind of crap link. May I know who is the name of the Senor Russian Engineers? LOL.. No name left. Maybe some Russian road sweeper hired by Chengdu to do some domestic cleaning inside the hangar.

I will not even bother to dare post this kind of news if you want to support your smear stance.

Let me post some spec about J-10 and Lavi

J-10


Lavi


If J-10 is some Lavi copy, it needs some major redesigning that will make Lavi contribution redundant.
And don't tell me, J-10 is some Lavi enlarge with a more powerful engine, bigger airframe, wingspan.. Only ignorant people with no aeronautic or military knowledge will say that. You need to redo all the wind tunnel test, rewrite all the FBW and redo all the major airframe restructure. Then I will tell you, you better do a new aircraft from toe to head will be hell lot easier.

In the end, it will end up as a new plane.

hmmmm do you need a remedial class in English?

1st off I said MAKE your own conclusion.

2nd ... I've never stated in any way shape or form what my stance really is. I was merely posting an article which may possibly link Lavi with the J-10.. nothing more nothing less and this was only because inanon asked in his post.

Chill out dude!
 

Lion

Senior Member
hmmmm do you need a remedial class in English?

1st off I said MAKE your own conclusion.

2nd ... I've never stated in any way shape or form what my stance really is. I was merely posting an article which may possibly link Lavi with the J-10.. nothing more nothing less and this was only because inanon asked in his post.

Chill out dude!

The poster who post the link needs to bear all the responsible. You can't get away from it. The article is such low quality with mentioning some Russian engineer with no name? Sound like some make up story just trying to sell. This kind of article can easily misled ordinary folks and precisely spread the kind of propaganda which this cheap article intended if not exposed by us.

And you mention you never make any stance, so I can conclude any stance and conclusion thru my own sum up. You ask others to make conclusion and now they did and you are not happy and insulted others need a English lesson? I think I need an apology.

Make up your mind , dude!
 
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plawolf

Lieutenant General
Oh FFS, not this again. This is the kind of nonsense I expect over at the Butt-hurt aka Keypublishing forums, not here.

As others have already pointed out, CAC did get some help from Israel that probably benefitted the J10, but those would have been mostly on subsystems, most likely, the FBW and radar. But the fact is, the J10-Lavi clone theory has been so thoroughly discredited, that the only people who still cling to it are the haters and trolls who simply refuse to believe otherwise regardless of minor details like facts, logic, physics or common sense.

Now, sorry if it was an honest question because someone is knew to all this, but I think in such cases, google is your friend, and it is best to do a little basic research yourself before asking such a basic question on such a well discussed subject.
 

Engineer

Major
They had some help from the Lavi project, but IAI left CAC by mid 1990s. It's quite clear from just looking at pictures, powerplant and dimensions, they are quite different.

The role of both aircraft are also different. Furthermore, Lavi uses close-coupled canard while J-20 uses control canard.
 

Engineer

Major
Oh FFS, not this again. This is the kind of nonsense I expect over at the Butt-hurt aka Keypublishing forums, not here.

As others have already pointed out, CAC did get some help from Israel that probably benefitted the J10, but those would have been mostly on subsystems, most likely, the FBW and radar. But the fact is, the J10-Lavi clone theory has been so thoroughly discredited, that the only people who still cling to it are the haters and trolls who simply refuse to believe otherwise regardless of minor details like facts, logic, physics or common sense.

Now, sorry if it was an honest question because someone is knew to all this, but I think in such cases, google is your friend, and it is best to do a little basic research yourself before asking such a basic question on such a well discussed subject.

If I remember correctly, Lavi's FBW came from the US while the FBW for J-10 had assistance from Dassault. In any case, J-10's chief engineer has officially denied J-10 being a copy of Lavi. That should be the best retort to the butt-hurt nonsense.
 

aquauant

Junior Member
Does anyone here know how much composites are used in J-10 models?

I recently read an article in ifeng news about composites usage in chinese fighters and civilian aircraft:


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"Chinese production of composites stalls; fighter aircraft uses less than 10%"

Oct 29, 2012, source: Chinese science newspaper or daily

Too long to translate. But it basically says we can produce it but cannot produce enough in consistent quality and basic research lacking... Need investment. Composites design is a trade off between reliability and performance/effectiveness... etc

I dont know if it is true at all or the opinion is outdated or not.
 

Quickie

Colonel
More importantly, the J-10 and Lavi have different types of wing. The J-10 wing has the delta shape with an upward slant whereas the Lavi wing has the semidelta shape (something like a cross between a delta and sweepback wing) with zero slant. If you look at the wings of the 2 aircraft from all the different angles, you'll see how different they are. The differences in wing type alone are going to lead to very different aerodynamics outcomes for the 2 aircraft.
 
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