J-20 5th Gen Fighter Thread V

[GreenestGDP]

With a

The dark hexagon directly below the canard looks to me like a perforated panel that let;s additional air into the jet intake. The one in front of it, right behind the edge of the intake, could be some kind of assess panel. All the flush panel joints appear to have the stealth zig zag. This suggest the benchmark for stealthiness is very high, and a fundamental design consideration right down to the most detailed design. I would venture to guess J-20 goes much further to maximize radar stealthiness than ... ...

Just friendly reminder ... ...
With all due respect, ... ...

1) OpFor is NOT and NEVER will be =/= Russia

2) It is against the SDF basic rule to compare PRC aircraft / weapon to any other nation's aircraft / weapon ... ...

 

[Air Force Brat]

The dark hexagon directly below the canard looks to me like a perforated panel that let;s additional air into the jet intake. The one in front of it, right behind the edge of the intake, could be some kind of assess panel. All the flush panel joints appear to have the stealth zig zag. This suggest the benchmark for stealthiness is very high, and a fundamental design consideration right down to the most detailed design. I would venture to guess J-20 goes much further to maximize radar stealthiness than the T-50

why does the fit and finish around the side missile bays look so much worse on the 2016 than on the 2013?

Yes, that is an observation that many of us have noted in the past, the J-20s shaping and detail seems to be geared for maximum L/O shaping, while the T-50 has obviously sacrificed L/O, and gone for super-maneuverability, hoping for an electronic fix for signature reduction.

I would doubt that 2016 is less well finished than 2013, possibly you could post a couple of comparison pix of the two birds illustrating your observation???

J-20, T-50, F-35, FC-31, and F-22 share many common features of an L/O fifth gen bird, but they are each very much individual designs, and each has gone in its own direction, the F-35 for instance is the only single engine bird, and the only one available in three distinct configurations, and the only STOVL aircraft??

 

[Air Force Brat]

With a



Just friendly reminder ... ...
With all due respect, ... ...

1) OpFor is NOT and NEVER will be =/= Russia

2) It is against the SDF basic rule to compare PRC aircraft / weapon to any other nation's aircraft / weapon ... ...

1. Never say Never again! Mr. Santos did not suggest such a thing? but in my humble opinion, you can't rule out possibilities with the major players, they are always "jockeying" for position?

2. In each and every thread we all make observations of similar equipment, (IE, the comparison of the Liaoning island, with the island on the Enterprise), you always measure the upstart with the benchmark, otherwise we are left with posts such as J-20 has a pretty green HUD?? really, the rules are to prevent people from antagonizing one another and flame baiting.

each of us have and will make comparo's, there is a gentlemanly polite way to do that without offending or belittling one another, if you don't get it right the mods will be happy to offer correction/solutions??? LOL

the rules are to promote a healthy vigorous discussion, while allowing our very kind and generous moderators to keep these "discussions" polite and professional. The SDF continues to be the foremost military discussion on the planet because of our very gentlemanly and respectful posters and our mods, who have earned their stripes by being extra-ordinary gentleman. We try to cultivate a knowledgeable and respectful "brotherhood" and that is as it should be. brat

and yes, I have received some of those reminders?? LOL

 

[Deino]

Back home ... as such no. 2017 can appear !

 

[b787]

The dark hexagon directly below the canard looks to me like a perforated panel that let;s additional air into the jet intake. The one in front of it, right behind the edge of the intake, could be some kind of assess panel. All the flush panel joints appear to have the stealth zig zag. This suggest the benchmark for stealthiness is very high, and a fundamental design consideration right down to the most detailed design. I would venture to guess J-20 goes much further to maximize radar stealthiness than the T-50

why does the fit and finish around the side missile bays look so much worse on the 2016 than on the 2013?

zigzag panels do not make a aircraft disappear from radar, there is something called resonance

An aircraft is comprised of many pieces of metal with different lengths. The fuselage is the longest metallic piece. The fuselage is basically an antenna. The other pieces of metal inside the aircraft are also antennas.

Now, all solid objects have a sonic resonance frequency. Similarly, all metallic objects have an electromagnetic resonance frequency.

The fuselage has an electromagnetic resonant frequency. The ailerons, elevators, vertical stabilizers (probably metallic ribs), metallic wing ribs, metallic landing gear, etc. have their own resonant frequency.

With modern amplification and digital processing software (to exclude background noise), the detector is able to isolate the signal return from the aircraft due to half-wave and quarter-wave resonance of those metallic pieces.

There is no known way to stop a resonant frequency. It is a physical property. When the electromagnetic wave hits the piece of metal, it creates a standing wave. The electrons wiggle at the resonant frequency. This turns into a transmitter like an antenna. This is exactly how an antenna works. You pump a signal into an antenna. In the past, you couldn't distinguish the signal coming off resonance because it was near the noise level. Now, you can.

The only method is to stop the electromagnetic wave from reaching the piece of metal. The stealth coating is designed to interfere with the electromagnetic wave from reaching the piece of metal. However, the stealth coating only works at one (or maybe two) frequency band.

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The J-20 is designed to have stealth features only in some frequencies and only against some types of radars available, that means it is designed considering the types of radar its potential enemies have.

The zigzag panel has a resonance frequency where its stealth treatment does not work, same the overall J-20, some types of radar see stealth aircraft well, but is common people think stealth work always, the reality is it is better have legs to run than try to hide with modern radars, speed will be more important at the end of the day

 

[no_name]

It's not about whether you either see something or not but how well you can see it.

That's why people stay more vigilant when walking at night, even if there may be some weaker light source it reduces your situation awareness and how far away you can distinguish threat and make out what it is to take action.

 

[Deino]

Are these pylons ???

 

[siegecrossbow]

Are these pylons ???

View attachment 20543 View attachment 20544

Seems to be the consensus on CJDBY. Looks like they are AA munitions of some sort.

 

[plawolf]

Would the suggest they are done with the clean configuration flight testing, since are now moving onto evaluating it with external stores?

 

[Jeff Head]

The J-20 would look awesome with a couple of fuel tanks hanging under its wings to extend range.

Sor of like what the US typically does a lot of with the F-22.

As they approach a potential conflict zone that can then be jettisoned to go back to full stealth mode with the armament n the inside.

I am looking forward to seeing such a configuration on the J-20...makes a lot of sense.