Chengdu J-20 5th Generation Aircraft News & Discussions

[siegecrossbow]

Anyone knows when these photos were taken?

 

[krash]

The maneuver performed are just simple rolls to change the angle..... most probably used in airshows and to land the plane in constrained environments quickly without taking a long loop....... the performance of the plane with that half roll.... has to be attributed to those large pair of canard fore planes which makes its turning radius smaller and eye pleasing.... however it has little or NO significance to air combats in all aspects..... the best such rolls could do is to make the plane land quickly and get applause from the audience in some air shows..... the real performance worthwhile for air combat could be only seen with a larger engine with higher thrust levels.... enabling maneuvers at near supersonic speeds.

---------- Post added at 11:46 AM ---------- Previous post was at 11:45 AM ----------



Do we have some circus going on in Chengdu ??

Wait so what your saying is that shorter turning radius is useless in air combat..........? Brova mate bravo...... Wonder what the TVC on your MKIs is good for.....

 

[SQ8]

Wait so what your saying is that shorter turning radius is useless in air combat..........? Brova mate bravo...... Wonder what the TVC on your MKIs is good for.....

Rules for the MKI, the LCA, and MMCRA , the FGFA and anything has has to fly with an Indian flag are separate from the rest of the aviation world.

 

[ChineseTiger1986]

Nice videos, good to see all the 3 major fighters jets in action, hope they all get inducted.

The video shows the take off speed of all the jets and gives us a pretty good idea of their landing and take off characteristic.


One thing which is bothering me and wanna clarify from the Chinese members, that J-20 when took off, the after burner stage was showing blue flame, while the J-10B when taking off had red flame. Since the J-20had those silver color engine nozzles, suggesting they are the Chinese variant of WS-10 series engine, while J-1-B also had the WS-10A engine most probably. So if both engines are of WS-10 series, then why different colored flames at the after burning stage, plus why the difference between the engine nozzles of the same engine with just being different variants.

Or is the J-20 in picture flying with Russian AL series of engine ?? Since the blue flame at the time of afterburner is seen in AL-series engines and the nozzle also is very much similar to the AL-series engine.

Clarification plzzzz. Thanks

The J-20 engine is the prototype of WS-15 according to some insiders, but we will see it later what it is exactly.

And the blue flame isn't exclusively among the Russian engine.


Here is the F-135 engine.

The WS-10 engine can produce the blue flame as well.

 

[DARKY]

Wait so what your saying is that shorter turning radius is useless in air combat..........? Brova mate bravo...... Wonder what the TVC on your MKIs is good for.....

Look at the speed at which the plane takes the roll..... and notice the speed of an MKI when it takes such a roll..... what I was trying to point out is the engine is still insufficient.... in providing adequate thrust for such a plane..... while design features also come into play as the pilot sitting in a EF2000 will be less reluctant to make a quick roll using TVC while a pilot in a flanker would do it at ease.... cause of this difference is the separation between engines.... however in a do or die situation no one thinks twice.

 

[DARKY]

Nice videos, good to see all the 3 major fighters jets in action, hope they all get inducted.

The video shows the take off speed of all the jets and gives us a pretty good idea of their landing and take off characteristic.


One thing which is bothering me and wanna clarify from the Chinese members, that J-20 when took off, the after burner stage was showing blue flame, while the J-10B when taking off had red flame. Since the J-20had those silver color engine nozzles, suggesting they are the Chinese variant of WS-10 series engine, while J-1-B also had the WS-10A engine most probably. So if both engines are of WS-10 series, then why different colored flames at the after burning stage, plus why the difference between the engine nozzles of the same engine with just being different variants.

Or is the J-20 in picture flying with Russian AL series of engine ?? Since the blue flame at the time of afterburner is seen in AL-series engines and the nozzle also is very much similar to the AL-series engine.

Clarification plzzzz. Thanks

The difference in the color of flames while in AB mode can be due to many factors..... one of the most common is the condition of lighting on the flame while the video or snap is taken.... an engine flame can appear of different color during different lighting conditions..... In case you could also see a pink or a violet flame from an engine.....

Now on condition that the light condition is common for all three engines the flame with longer wavelength or moving towards red would denote a lower core temperature as compared to that of the ones moving towards blue color in the visible spectrum.... aswell as the carbon content burnout.... the redder the flame more carbon content it has in the fuel.

If you have seen the earlier models of the AL-31 engines or Kimov engines they also showed red flame chareteristics.... which is now not seen in newer AL-31s and RD-33s.

The J-20 engine is the prototype of WS-15 according to some insiders, but we will see it later what it is exactly.

And the blue flame isn't exclusively among the Russian engine.


Here is the F-135 engine.

The WS-10 engine can produce the blue flame as well.

That engine in J-20 1st prototype is the WS-10 variant probably WS-10G as mentioned a hundred times by you aswell as your counterparts now how does that become WS-15 prototype ??..... or is WS-15 based on WS-10 and not a new technology ??

 

[S10]

The difference in the color of flames while in AB mode can be due to many factors..... one of the most common is the condition of lighting on the flame while the video or snap is taken.... an engine flame can appear of different color during different lighting conditions..... In case you could also see a pink or a violet flame from an engine.....

Now on condition that the light condition is common for all three engines the flame with longer wavelength or moving towards red would denote a lower core temperature as compared to that of the ones moving towards blue color in the visible spectrum.... aswell as the carbon content burnout.... the redder the flame more carbon content it has in the fuel.

If you have seen the earlier models of the AL-31 engines or Kimov engines they also showed red flame chareteristics.... which is now not seen in newer AL-31s and RD-33s.


That engine in J-20 1st prototype is the WS-10 variant probably WS-10G as mentioned a hundred times by you aswell as your counterparts now how does that become WS-15 prototype ??..... or is WS-15 based on WS-10 and not a new technology ??

WS-15 is a completely new design from WS-10, not its evolution. WS-10's fundamental design was based on American CFM56 (F108), with elements from AL-31F.

There's still a great deal of debates regarding the current engines on J-20 prototypes in China. Most people think it's AL-31FN though. WS-10 is still a maturing design, and I don't think they would take the extra risk putting it on such an expensive and important prototype.

 

[Bratva]

Why doesn't J-20 has IRST, while we see them on J-11, J-15, J-10, and will be added to JF-17's as well

 

[houshanghai]

Why doesn't J-20 has IRST, while we see them on J-11, J-15, J-10, and will be added to JF-17's as well

J20 will have EODAS like f35,no need IRST.

 

[ptldM3]

J20 will have EODAS like f35,no need IRST.

I do hope you realize that the EODAS is comprised of an IRST. And you have a source for your claim?

 

[houshanghai]

I do hope you realize that the EODAS is comprised of an IRST. And you have a source for your claim?

i know it........


sorry , only have chinese source now.

link:
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chinese official link about EADOS

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[gambit]

J20 will have EODAS like f35,no need IRST.

I do hope you realize that the EODAS is comprised of an IRST. And you have a source for your claim?

These guys generally do not so 'realize'. They made so many such claims -- before I set their arguments straight -- that it is expected to see such gross technical errors. They made these claims to appear knowledgeable, not that they bothered to do any research even when the public domain is filled with convenient information...

Avionics Magazine :: F-35 Electronic Warfare Suite: More Than Self-Protection

Although the RF-based EW system and infrared (IR) -based EODAS system are built to run separately in different frequency domains, they are tied together at the ICP level.

But then again, if China decided not to include infrared into any sensor integration processes and display, I say go for it.

 

[houshanghai]

These guys generally do not so 'realize'. They made so many such claims -- before I set their arguments straight -- that it is expected to see such gross technical errors. They made these claims to appear knowledgeable, not that they bothered to do any research even when the public domain is filled with convenient information...

Avionics Magazine :: F-35 Electronic Warfare Suite: More Than Self-Protection
But then again, if China decided not to include infrared into any sensor integration processes and display, I say go for it.

my means that J20 havet protuberance bump of IRST in the nose like f35 .you misunderstand me.

 

[Broccoli]

Real or fake?

 

[S10]

Why doesn't J-20 has IRST, while we see them on J-11, J-15, J-10, and will be added to JF-17's as well

Right now there are only two prototypes, 2001 and 2002. There is a third one for static stress testing. The first two are meant for basic flight tests, with basic avionics and no radar installed. Prototype 2003 will be the one that features full avionics suite, including a system similar to EODAS. That one will be unveiled in 2013.