J-20 5th Gen Fighter Thread V

[SinoSoldier]

So what's the new thing under the wing on the fuselage behind the rear landing gear? It's not on earlier pics of the 2016.

RCS amplifier, perhaps?

 

[Quickie]

I am simply going by what big shrimps said over the years.

That would depend on whether they really have access to a reliable official source.

Through?! I hope I misunderstood you, but that's a physical impossibility. Consider what happens if air passes through the aircraft. The plane could not fly because no lift could be generated.

"Through" as in "flowing through the underside".

That's like saying wing can't generate lift because it is attached rigidly to the air-frame.

There is vertical stabilizer, and then there is rudder. The two are not the same even though they are mounted at the same place. Vertical stabilizers, or in this case, ventral fins do exactly what you claimed they cannot do. They keep the aircraft from yawing through weathercock effect. External forces are naturally counteracted, hence the term "stabilizer" because such airfoils add stability. Rudder actually does the complete opposite, adding yaw moment where there is none to force the nose to point away from equilibrium.

Finally, ventral fins are smaller than traditional stabilizers because ventral fins are more effective.

The discussion is swaying away from the point and I really dread such a thing.

Look, no one is saying the ventral fins is useless.

What I meant was , the fixed ventral fins won't be able to prevent the aircraft from yawing from a straight line flight when the aircraft encounter any kind of changing external forces, like a gusts of wind from a lateral direction. Only a rudder or a movable vertical stabilizer can do that.

The fixed ventral fins helps in keeping longitudinal stability only when the aircraft is flying through unchanging air-stream.

My argument is really against the notion that the movable vertical stabilizer becomes ineffective at the designed max high alpha . And the way the J-20 designer solves the increasing ineffectiveness at higher alpha is to move back the movable vertical stabilizers to a further aft position where the air-stream is stronger than a more forward position. Think of the air-streams moving above and below the aircraft at a certain alpha and finally merging at a point aft of the aircraft where the air-stream reaches its maximum again.

I've already said the very little bit I want to say. Let's move on.

 

[JayBird]

This is how you get J-20 pics in CAC airport. They are now tree climbers instead of wall climbers.

 

[Blitzo]

This is how you get J-20 pics in CAC airport. They are now tree climbers instead of wall climbers.
View attachment 21672

Holy cow, I just choked on my drink... I thought the guy was wearing a mask for a second... terrifying.

 

[JayBird]

Holy cow, I just choked on my drink... I thought the guy was wearing a mask for a second... terrifying.

Sorry Bltizo. I just PSed a Panda head on the tree climber's body in case he didn't want his face seen. It kind of fits since Chengdu, Sichuan is home of the panda bears and the tree climbers. And I love both Panda bears and tree climbers for their efforts getting us the newest J-10 and J-20 pics all these time.

 

[GreenestGDP]

This is how you get J-20 pics in CAC airport. They are now tree climbers instead of wall climbers.
View attachment 21672

I would like to Sincerely express my Utmost Gratitude to those who
go to all the troubles to take the PLA photos, and
also to those who fetch and deliver the photos to others
PLA watchers around the globe ... ...

Sorry Bltizo. I just PSed a Panda head on the tree climber's body in case he didn't want his face seen. It kind of fits since Chengdu, Sichuan is home of the panda bears and the tree climbers. And I love both Panda bears and tree climbers for their efforts getting us the newest J-10 and J-20 pics all these time.

JayBird, thank you so much for being so thoughtful for
protecting the face of those Tree Climbers.

 

[Equation]

A little OT perhaps but never the less related.

WASHINGTON, Nov. 12 (UPI) -- Chinese scientists from Huazhong University of Science and Technology have developed new material that can help fighter jets avoid the most advanced radars.

The new material is capable of absorbing microwave radar signals through ultrahigh frequencies. Currently, known materials with the same ability are too thick to use for fighter jet construction. However, the material developed by Chinese scientists is measured to be nearly ten times thinner than any other known material.

"Microwave absorbers can effectively reduce the radar cross sections of aircraft, and so they are commonly used in stealth missions,"

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submitted to the Journal of Applied Physics reads. "Unfortunately, absorbers are usually thick and have relatively narrow absorption bandwidth."

The research, led by Chinese scientist Wenhua Xu, suggests the newly-developed material could surpass the stealth capabilities of Lockheed Martin's F-35, which has stealth technology that may not be too effective against ultrahigh frequencies

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.

The technological innovation was announced as the Chinese government continues to fast-track its military development, which some defense analysts say has managed to close the gaps with Western militaries.

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published in September by the Rand Corporation suggested that the Chinese military would be able to mount a difficult defense against the U.S. Armed Forces in the fictional scenario of a U.S. invasion.

China came under

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earlier in 2015 after documents leaked by

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revealed Chinese hackers stole plans for Lockheed Martin's F-35

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fighter jet, prompting the government to take further cybersecurity measures.

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[Deino]

... and 2016 seems now to have a working IRST in place of the previous mock-up.

 

[sequ]

... and 2016 seems now to have a working IRST in place of the previous mock-up.

Finally after 4 prototypes sporting the mock-up! I got disappointed when 2016 rolled out without the real thing.

 

[Blitzo]

Finally after 4 prototypes sporting the mock-up! I got disappointed when 2016 rolled out without the real thing.

Actually, 2011, 2012, 2013 and 2015 were all re-fitted with working EO-IRST systems after their first flights, if one goes back and checks past images... It's just that none of them made their maiden flights with working models for some reason.