J-20 5th Gen Fighter Thread VI

[lllchairmanlll]

 

[lllchairmanlll]

 

[siegecrossbow]

Practice video from the 30th.

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[ougoah]

Practice video from the 30th.

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I hope they pull some tighter turns for the actual show. This practice routine looks slow and conservative. Don't see why they wouldn't show off J-20 a little if the plane is able to perform. Notice no afterburner used in the practice run.

 

[siegecrossbow]

I hope they pull some tighter turns for the actual show. This practice routine looks slow and conservative. Don't see why they wouldn't show off J-20 a little if the plane is able to perform. Notice no afterburner used in the practice run.

I think they are just familiarizing with the area for now.

Here is a video with four J-20s flying in formation. Do lower the volume due to obnoxious BGM.

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[ougoah]

I know it's Quora but worse people and sources have been brought up in the past.

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"Mike McAuliffe" is probably a pseudonym but I've read his posts and he seems to know a fair bit more than the usual fan/observer. Some of his other posts on Quora are interesting reads although often out of my depth.

Finally, you have to look over Chinese articles on layering of MMIC circuitry into composite materials as RF quantum interference system (see: ‘invisibility cloak’) and combine this with the very unusual patterns of raised stripping all over the jet which is actually proud of the surface in some areas and has the waxy look of dielectrics in others. And when combined with the billions that have been thrown at upgrading the ASQ-239 Barracuda suite to near ESM levels without an onboard jammer or even ARM cueing requirement.

It become obvious: Modern RFLO is not passive.

...

RF hits the jet. The silvery top coat with it’s gunmetal UV protectant unifies the various material differences into a single impedence value which cause the radar to flow like as travelling waves over it. And the ASQ-239, which uses perhaps the entire airframe, as an antenna but certainly multiple striplines spready across it, measures the doppler and phase rotation values of the entire signal before generating a counterwave which actively cancels out the radar pulse within the surface duct. It is not a ‘jammer’ perse because it doesn’t depend on knowledge of the threat radar receiver processor which changes with software updates every quarter or so anyway.

Instead it is something which either through the skin or from the raised surrounds on certain panels (which are too proud to be RAM sealants) it degrades the signal before bounce back, in real time, without any onboard emission perse this is why the ‘Mission Data Files are so important to the functioning of the system.

It is why the jet’s designers are so proud of the ‘reliability’ of the stealth coatings being baked right in. Like they were Keebler cookies or something. They are not coatings. They are software upgradeable RF cancellation circuits.

And the third generation of VLO is not passive at all. Which means that vulnerabilities to longer wavelengths (the entire airframe being a reverse-antenna of sorts) is no more than it would be to the deep RAS of a B-2. Because you are literally using every square foot of the jet as a sponge to soak up but not return the RF energy.

Could the latest VLO technologies be less involved with shaping than they are with materials? Also noticed that today's J-20 photos show a black seal like material over the weapons bay edges that earlier post-prototype versions didn't have. Nor do F-35s and F-22s visibly show something similar.

 

[by78]

All high-resolution photos...

 

[by78]

More...

 

[Totoro]

Why do all of these, supposedly in service, airframes have the EO sensor fairing covered, similar to preproduction models? They don't have the EO sensors installed/working yet?

 

[ougoah]

Why do all of these, supposedly in service, airframes have the EO sensor fairing covered, similar to preproduction models? They don't have the EO sensors installed/working yet?

Have there been examples where we see them uncovered? I'm not sure if I've seen that but never really noticed a coloured glassy cover on J-20. Could this indicate that this is just how it is and the equipment can emit/receive past the cover material? I don't know if they still have optical sensors and I won't pretend to know how DAS works.