J-20 5th Gen Fighter Thread V

[Schumacher]

................
J-20= AL-31F M2 145 kN Thrust.

It's a nice improvement over AL-31F, But the status for this engine is : In tests. And a little disappointed is not WS-XX if this is true........

That's why this J20 using AL31 thing should be taken with a grain of salt. Using the M2, an engine in test ?? The AL31 crowd always said using AL31 was because it's more mature than WS10.
What I always say from day 1 is if indeed it's AL31, everyone and their dog would have heard something definite from the Russians by now, instead of just speculations.

 

[Blitzo]

That's why this J20 using AL31 thing should be taken with a grain of salt. Using the M2, an engine in test ?? The AL31 crowd always said using AL31 was because it's more mature than WS10.
What I always say from day 1 is if indeed it's AL31, everyone and their dog would have heard it from the Russians, instead of just speculations.

Possibly because that particular Al-31 variant may have greater thrust compared to higher thrust WS-10 variants and had finished development earlier, or maybe CAC just has a good deal with the Russians for Al-31s, or maybe they're cheaper while having sufficient performance, or who knows. There's a whole multitude of equally plausible reasons, and Chinese engine development is so opaque and rarely updated that we really just don't know.

Personally I think it's a bit early to rule out what engine 2016 is not using.

 

[Hyperwarp]

Assuming wikipedia is accurate on engines.

Su-27, Shenyang J-11, Sukhoi Su-30MKK = AL-31F 123 kN Thrust.

J-10= AL-31FN 127 kN Thrust.

J-10B= AL-31FN Series 3 137 kN Thrust.

Su-35= AL-41F1S (117S) 142 kN Thrust.

PAK FA=AL-41F1 (117) 147 kN Thrust.

J-20= AL-31F M2 145 kN Thrust.

It's a nice improvement over AL-31F, But the status for this engine is : In tests. And a little disappointed is not WS-XX if this is true........

That wiki article requires editing. Whoever wrote that article is confusing kgf with kN. Here are the Salut articles:

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(12700 kgf that is ~125 kN or 28000 lbf)

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(13700 kgf that is 134 kN or 30000 lbf)

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(14500 kgf that is 142 kN or 32000 lbf)

We also have to assume Russians are willing to clear a 140+ kN class engine. So far the highest thrust engine available is the 134 kN AL-31FN Series 3 engine.

 

[antiterror13]

The Russian definitely is willing (and happy) to sell AL-31F M2 to China, they would sell it otherwise would lose the market very soon

 

[Pmichael]

Well, the question what is more important.

The moderate increase of thrust with the lastest export engines or gaining experience with domestic produced and designed ones.
The J-20 would be underpowered with both engines until China gets the WS-15 on the J-20.

 

[Deino]

Ohhh please not that "the J-20 is underpowered" story again !!!

That is well known and already accepted by all ... no need to add it in each post.

Deino

 

[latenlazy]

Well, the question what is more important.

The moderate increase of thrust with the lastest export engines or gaining experience with domestic produced and designed ones.
The J-20 would be underpowered with both engines until China gets the WS-15 on the J-20.

Sure. But more thrust is still more thrust.

 

[Qi_1528]

Is there any indication with this new plane that the J-20 has or will have a gun port? No?

 

[Blitzo]

Is there any indication with this new plane that the J-20 has or will have a gun port? No?

J-20's possible gunport has already been identified a little while back on past prototypes. Start there and continue reading the posts for a page or so.

https://www.sinodefenceforum.com/j-20-5th-gen-fighter-thread-v.t7303/page-34#post-355927

 

[Qi_1528]

J-20's possible gunport has already been identified a little while back on past prototypes. Start there and continue reading the posts for a page or so.

https://www.sinodefenceforum.com/j-20-5th-gen-fighter-thread-v.t7303/page-34#post-355927

So Wikipedia gets it wrong again. Thanks.