J20 Stealth Fighter

[lixun]

203 pages but nobody asks a critical question. how is a fighter jet with canards regarded as stealth? canards= more reflecting surfaces on radar.

I have a paper on China’s reduction of the RCS value of the duck wing, but the Mexicans here think it is the propaganda of the Chinese Communist Party

 

[IndiaRising]

I have a paper on China’s reduction of the RCS value of the duck wing, but the Mexicans here think it is the propaganda of the Chinese Communist Party

you should read that paper's conclusions. unless you want to spend all your time in the J20 cruising at subsonic or supersonic speeds, there will be deflections.

 

[IndiaRising]

Westerners think that they are leading by ideology, religion, and language. In fact, Westerners rely on organized violence. Easterners will always remember this in their hearts.

yes we know Tianamen Square.

 

[lixun]

you should read that paper's conclusions. unless you want to spend all your time in the J20 cruising at subsonic or supersonic speeds, there will be deflections.

If you enter the WVR, stealth is not so important, the canard does not need to be deflected during the rest of the time, you can use the main wing to control

 

[lixun]

yes we know Tianamen Square.

My father participated in Tiananmen Square

 

[IndiaRising]

My father participated in Tiananmen Square

good for him. there is a bigger despot in power now. you should follow his footsteps.

 

[lixun]

good for him. there is a bigger despot in power now. you should follow his footsteps.

I will officially join CCP next year

 

[IndiaRising]

I will officially join CCP next year

then you will join the despot.

 

[MiG-29SMT]

The current policy of the Chinese government is to shift from the era of industrial capital to the era of financial capital. As for European industry and technology, I will give an example. The difference between China and Europe for gyroscopes and mechanical gyroscopes is at least 30 years, but electronic gyroscopes China and Europe are basically the same. With the progress of the fourth industrial revolution based on the Internet and electronic information, Europe will continue to be left behind

If Europe is behind how come Airbus is the leader in airliners, Eurocopter is copied by China.

 

[Maharaj samudragupt]

I will officially join CCP next year

Do join it , it's our enemy but it will do good to China though.

 

[MiG-29SMT]

I have a paper on China’s reduction of the RCS value of the duck wing, but the Mexicans here think it is the propaganda of the Chinese Communist Party

it is not propaganda is planform alignment

let us see

the canard has not the same angle as the wing breaks planform alignment. In fact since it isa control canard and all moving it is not shielded by the wing basically not stealth

 

[lixun]

it is not propaganda is planform alignment

let us see

View attachment 98646

the canard has not the same angle as the wing breaks planform alignment. In fact since it isa control canard and all moving it is not shielded by the wing basically not stealth

Do you know that the duck wings can move

 

[DEV1729]

Westerners think that they are leading by ideology, religion, and language. In fact, Westerners rely on organized violence. Easterners will always remember this in their hearts.

Chinese communist party is based on western governance known as communism created by western poodle german nazi karl marx,so current china government is a colonial entity

 

[lixun]

Chinese communist party is based on western governance known as communism created by western poodle german nazi karl marx,so current china government is a colonial entity

There is only one regime based on Marxism and Communism, the Paris Commune

 

[DEV1729]

There is only one regime based on Marxism and Communism, the Paris Commune

CCP is a western poodle not east ideology,ccp is a destroyer of chinese dharmic ethos and a enemy of humanity

 

[johnq]

Westerners think that they are leading by ideology, religion, and language. In fact, Westerners rely on organized violence. Easterners will always remember this in their hearts.

CCP are the worst criminals in human history, not just against other nations (Tibet, Mongolia, East Turkestan, India, Vietnam, etc.) but also against their own Chinese people.
For those interested in CCP's screwed up history, read about how their Chairman Mao's Great Leap Forward lead to 55 million deaths of Chinese people:

Great Leap Forward - Wikipedia

en.wikipedia.org

Or how the CCP killed 20 million Chinese people in the massacres of the Cultural Revolution, often eating Chinese people after killing them, as in the Guangxi Massacre:

Guangxi Massacre - Wikipedia

en.wikipedia.org

The Guangxi Massacre (simplified Chinese: 广西大屠杀; traditional Chinese: 廣西大屠殺; pinyin: Guǎngxī Dàtúshā), or Guangxi Cultural Revolution Massacre (广西文革大屠杀; 廣西文革大屠殺; Guǎngxī Wéngé Dàtúshā), was a series of events involving lynching and direct massacre in Guangxi during the Cultural Revolution (1966–1976).[1][2][3][4][5] The official record shows an estimated death toll from 100,000 to 150,000.[1][4] Methods of slaughter included beheading, beating, live burial, stoning, drowning, boiling and disemboweling.[1][6] In certain areas including Wuxuan County and Wuming District, massive human cannibalism occurred even though no famine existed; according to public records available, at least 137 people—perhaps hundreds more—were eaten by others and at least thousands of people participated in the cannibalism.[1][2][3][4][5][7][8] Other researchers have pointed out that 421 victims who could be identified by names were eaten, and there were reports of cannibalism across dozens of counties in Guangxi.[4][7][9]

After the Cultural Revolution, people who were involved in the massacre or cannibalism received minor punishments during the "Boluan Fanzheng" period; in Wuxuan County where at least 38 people were eaten, fifteen participants were prosecuted, receiving up to 14 years in prison, while ninety-one members of the Chinese Communist Party (CCP) were expelled from the party and thirty-nine non-party officials were either demoted or had a salary cut.[1][3][5][6][10] Although the cannibalism was sponsored by local offices of the Communist Party and militia, no direct evidence suggests that anyone in the national Communist Party leadership including Mao Zedong endorsed the cannibalism or even knew of it.[5][7][10] However, some scholar has pointed out that Wuxuan County, through internal channel, had notified the central leadership about the cannibalism in 1968.[9]

Cultural Revolution - Wikipedia

en.wikipedia.org

This was not happening in some prehistoric period, but as late as 1976, meaning the killers and cannibals are still alive!
Most of the CCP killers and cannibals of the Cultural Revolution got away with murder without any serious punishment due to their political connections, often inventing ridiculously fake cover stories to cover up their crimes, like saying that they were living in some cave or distant village when the crimes occurred. And many of these same criminals (without any sense of humanity left after committing such crimes) are now part of the CCP leadership.

 

[Alien_cat26]

What is it now? Is it a seminar on the CPC?

 

[MiG-29SMT]

Do you know that the duck wings can move

. But they are also a good way to increase radar cross section and compromise the other stealth features. Unless the canards have to be on the same plane with the wings, they would significantly contribute to increase RCS regardless they are moving or not from 12 o'clock head on. And even if it's being aligned with the wings on the same plane and angles both horizontally and vertically, it would still contribute to increasing RCS nonetheless from a diagonal view.

J-20 (Jianjiji-20 Fighter aircraft 20) / F-20

J-20 (Jianjiji-20 Fighter aircraft 20) / F-20 Chinese Stealth Fighter

www.globalsecurity.org

the coplanar canards of X-36 are far more stealthier than J-20s canards

In the control-canard, most of the weight of the aircraft is carried by the main wing and the canard wing serves primarily as the longitudinal control device. A control-canard could be all moving or could have a large elevator. The control-canard has often higher aspect ratio and employs a thicker airfoil section than a lifting-canard. A control-canard mostly operates at zero angle of attack. Fighter aircraft with a canard configuration, such as Eurofighter Typhoon (Figure 3.7), typically have a control-canard. One benefit obtainable from a control-canard is avoidance of pitch-up. An all-moving canard capable of a significant nose-down deflection will protect against pitch-up. Control canards have poor stealth characteristics, because they present large moving surfaces forward of the wing

http://www.aero.us.es/adesign/Slides/Extra/Stability/Design_Tail/Chapter%206.%20Tail%20Design.pdf

 

[MiG-29SMT]

Do you know that the duck wings can move

Since all configurations have the same fuselage, dorsal intake and vertical empennage, the explanation of the RCS signature reduction for the Standard delta with LEX and Double delta is due to the planform of the configurations. Note that Standard delta with LEX and Double delta have different leading edges sweep, which enhances survivability by the non-uniform fringe surfaces. By last, canards can potentially have poor stealth characteristics due to their large and angular surfaces that tend to reflect radar signals forwards.

https://www.icas.org/ICAS_ARCHIVE/ICAS2018/data/papers/ICAS2018_0199_paper.pdf

EVALUATION OF DELTA WING EFFECTS ON THE STEALTH-AERODYNAMIC FEATURES FOR NON-CONVENTIONAL FIGHTER AIRCRAFT

Disadvantages • Possibility for adverse flow disturbances over the wing from the canard. • High canard CLmax leads to low efficiency, e, and high e leads to low CLmax. • Canards have poor stealth characteristics. • Canard sizing is very sensitive. • Generally have a small moment arm to VT, requiring larger area

http://www.dept.aoe.vt.edu/~mason/Mason_f/canardsS03.pdf

 

[rockdog]

J20 shape and RCS analysis from Taiwan side. It says the lenght is 20m.