Chengdu J-20 5th Generation Aircraft News & Discussions

[longlong]

you idiot does J-20 not have the huge wing?, wing +canard must increases it frontal RCS,look at the pics of F-22 its engine nozzle shielded by some kind of material, its horizontal tail partially shielded its engine flame to the side, and what about J-20 from rear, its defenceless to infrared SAM and AAM from the rear, grow up kid


leave him alone Mr gambit, these chinese fanboys live in their fantasy world that their is superperfect

Oops, you must have forgot to brush your teeth after eating rotted food.
Why wings + h-tail decrease RCS while carnards+wings increase?
Stealth is based on science facts, not your bare eyesight and small volume brain imagination.

Forget your F-22, it's stopped production and waiting for dying in the limited remained flying hours.
It's a whole failure.

And don't bet on others. No one can save the F-22 from ageing and dying.

Absolutely...I wish more and more of the PLA's leadership think that way.

I wish more and more of DOD think same way as you.

 

[j20blackdragon]

Worry less about the J-20's planform aligned canards and worry more about the F-22's forward facing splitter plates and gaps.

 

[Bussard Ramjet]

Worry less about the J-20's planform aligned canards and worry more about the F-22's forward facing splitter plates and gaps.

Why?

Do you have the RCS measurements of the two planes from the front side?

Isn't it already well established that RCS can't be abstracted out into individual components?

 

[Ultima Thule]

you know science behind J-20 grow up kid, just imagine that entring enemy airspace or fight with another 5th gen aircraft canard must increases frontal RCS, it gives extra RCS to the radar, frontal RCS is most important factor of modern aircraft, how sophisticated canard are they give extra surface to radar use the common sense, its basic science fact not my word, if don't believe go live on your fantasy world and wet dream that J-20 is invencible plane

 

[ACE OF THE AIR]

It was reported some time back that when US Air Force One flew President George W. Bush jr. to Afghanistan they were able to minimize the RCS of B747 to that of a Learjet and the cover was almost blown when one of the pilots flying a commercial flight could actually see the aircraft.

 

[longlong]

you know science behind J-20 grow up kid, just imagine that entring enemy airspace or fight with another 5th gen aircraft canard must increases frontal RCS, it gives extra RCS to the radar, frontal RCS is most important factor of modern aircraft, how sophisticated canard are they give extra surface to radar use the common sense, its basic science fact not my word, if don't believe go live on your fantasy world and wet dream that J-20 is invencible plane

Aren't h-tails the same?
Extra RCS is from the "must" you imagined or the "must" from your primary school education?

F-22 has two huge H-tails for they are too close to the main wings even overlapped.

J-20 has smaller canards for they are far from main wings.

Their size is decided by the lever to pitch the aircraft. J-20 canards work more effective than F-22 H-tails.

With the help from supercomputer, RCS from J-20 canards will be less from F-22 h-tails which was designed in 1980s by using of 286-like computer and human imagination.

 

[longlong]

So if a Chinese use his eyeballs he is correct, but if anyone else uses his eyeballs, that person is wrong.

Yeah...No wonder you guys are the laughing stock of this forum.

You make the science racialism and it makes your opinion less valuable.

Worry less about the J-20's planform aligned canards and worry more about the F-22's forward facing splitter plates and gaps.

Just imagine what if we exchange the air intake between F-22 and J-20.
We are expected to be flooded by milky way of stuffs to explain why and how the gaps increase tons of RCS.
But it is okay on F-22 raptor. Yummy!

 

[Ultima Thule]

Aren't h-tails the same?
Extra RCS is from the "must" you imagined or the "must" from your primary school education?

F-22 has two huge H-tails for they are too close to the main wings even overlapped.

J-20 has smaller canards for they are far from main wings.

Their size is decided by the lever to pitch the aircraft. J-20 canards work more effective than F-22 H-tails.

With the help from supercomputer, RCS from J-20 canards will be less from F-22 h-tails which was designed in 1980s by using of 286-like computer and human imagination.

yes what a logic you have ill brain you have, look at you you must go nursery education first then talk about stealth aircraft RCS, go live on your fantasy world,wishful thinking and your wet dreams, every aircraft have own limitations,so does J-20 have its own limitation, go worship your almighty J-20 that can't see from radar and invencible plane to whole planet earth rdars

 

[j20blackdragon]

Just imagine what if we exchange the air intake between F-22 and J-20.
We are expected to be flooded by milky way of stuffs to explain why and how the gaps increase tons of RCS.
But it is okay on F-22 raptor. Yummy!

I'll post some better pictures.

YF-22

F-22

The splitter plates and gaps around the F-22 inlets essentially create shallow forward facing cavities. There are actually additional forward facing cavities INSIDE each of the gaps if you take a closer look.

Does anyone want to explain what happens to radar energy when it enters a shallow cavity?

 

[Deino]

Could You all please leave that eyeball-analyzing of stealth aircraft !??

I'm sure no-one here can do that or even more compare two different types only by comparing images even more from two aircraft designed several years apart, based on different technologies and most of all design philosophy ...

Deino

 

[gambit]

Could You all please leave that eyeball-analyzing of stealth aircraft !??

I'm sure no-one here can do that or even more compare two different types only by comparing images even more from two aircraft designed several years apart, based on different technologies and most of all design philosophy ...

Deino

Such 'analysis' are inevitable and in many ways -- instructive.

But it is more instructive of the person expressing himself than it is from any credible technical data comparison, of which we will most likely never have any. So let them go at it. Other than basic principles, which we know the Chinese members here do not know, anyone should be allowed to make a fool out of himself.

 

[longlong]

Such 'analysis' are inevitable and in many ways -- instructive.

But it is more instructive of the person expressing himself than it is from any credible technical data comparison, of which we will most likely never have any. So let them go at it. Other than basic principles, which we know the Chinese members here do not know, anyone should be allowed to make a fool out of himself.

It's really laughable and shameful of somebody to act as an aircraft-stealth expert on an internet forum.

In that case, either he/she did not have to sign a CA since he/she works as an barber in the company, or he/she is a retired taxi driver only.

============

The gaps come form last generation jet fighter. F-22 has it is not because of it's good, it's because it has to be ---- it born in 1990s ---- when the time did not have internet, smartphone, 4K tv, wifi, peta grade supercomputer, and DSI.

You do not need to beautify the ugly ---- we cannot find any mp3 player from a car manufactured in 1980s whatever the good words you said to it's cassette player, it's obsoleted .

Accept it, you and F-22 are too old to be proud.

 

[j20blackdragon]

I'll post some better pictures.

YF-22

F-22

The splitter plates and gaps around the F-22 inlets essentially create shallow forward facing cavities. There are actually additional forward facing cavities INSIDE each of the gaps if you take a closer look.

Does anyone want to explain what happens to radar energy when it enters a shallow cavity?

No one wanted to step up to the plate and answer the question, so I'll do it.

So like I said before, if you want to worry about 'frontal RCS' worry about the F-22 instead.

 

[gambit]

No one wanted to step up to the plate and answer the question, so I'll do it.

View attachment 221031

So like I said before, if you want to worry about 'frontal RCS' worry about the F-22 instead.

You can 'do it' because you learned that from me. I posted an explanation about cavities and their effects on RCS a long time ago. You are not bringing any new information.

I also explained how it is measurement that will determine if a cavity will raise the average RCS value over a threshold and a threshold is something I know you guys have a difficult time grasping your minds around.

 

[longlong]

get to school first than talk about stealth, if they are developing 5th gen fighter or they are developing 15th gen fighter basic science behind stealth are same and does not change

To sit down and think why we need to develop 15th gen from 5th if they are same as you thought of?
====
There always have new challenge to hide the aircraft or any other things from radar.
We need to change a lot of things to cheat the new developed radar working in different band, mechanism, thus, we need to find out the new theories to achieve it.

The hide and seek game will never stop. There has no one theory last forever.
You have to made a new aircraft to win the later developed radar.
This is one of the reason that's why F-117 retired , F-22 stacked at airbase as well production line demolished, and F-35 must be made at any cost.