J-20... The New Generation Fighter II

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Blitzo

Lieutenant General
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The J-20's trailing edge of main wings are align DIAGONALLY to the canards. Seems kinda odd if you look at the F-22 and PAK FA when they are both aligning to the trailing edge of the aft wings and main wings ON THE SAME SIDE. So I don't see that as alignment. More of misalignment.

Is there a difference if it is aligned on the same side? The radar waves will still be scattered the same direction if the trailing edges were aligned in a similar manner to the F-22 and T-50. (Unless someone who specializes in this field can elaborate on this subject, I think my conclusion is a valid one)


Trolling?? I think personal attacks are trolling. I am only offering different opinion. Last I check, different opinion is not trolling.

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^^ But it's all good I'll wait it out.
 

kyanges

Junior Member
The J-20's trailing edge of main wings are align DIAGONALLY to the canards.

Hmmm, it's true they're diagonal on the same side, but they're aligned to an opposite edge, just like the blue lines of the F-22 pic you yourself posted.

678ftd.jpg
 
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latenlazy

Brigadier
Not comparable example. US was not that far behind Russia in term of rocket technology at the time, no more than few years at most. China on the other hand, has not yet design a combat aircraft completely on its own. This is compare to over ONE HUNDRED YEARS in accumulated experience of the west.

Just ask yourself, why does it take China so long to develop the engine??

I could extend your logic to other subjects. China is the second largest economy in the world, but by your logic we must be skeptical that this is so because it was stuck as a backward and undeveloped country for at least 140 years. (Feel free to apply this same logic to Korea by the way).
 

defaultuser1

Banned Idiot
Boy, if what you're saying is true, the J-20 designers are going to glean a lot from your posts and apply them in their revisions not to mention educate them on steatlh. Then this site provides as much trove of info to the US watchers as they do to they Chinese engineers.
No offense, but this is a laughable claim that trained engineers would need to go to a military fansite for information on improving their designs.
 

kyanges

Junior Member
No offense, but this is a laughable claim that trained engineers would need to go to a military fansite for information on improving their designs.

I can't really tell from just text, so I have to ask, you did pick up on his sarcasm right? And you're just saying that in acknowledgment of that sarcasm, right?
 

tanlixiang28776

Junior Member
I can't really tell from just text, so I have to ask, you did pick up on his sarcasm right? And you're just saying that in acknowledgment of that sarcasm, right?

Its hard to tell if someones being sarcastic when theres no facial expression on intonation. That and the fact he was a new member made it seem plausible he was being serious.
 

defaultuser1

Banned Idiot
I can't really tell from just text, so I have to ask, you did pick up on his sarcasm right? And you're just saying that in acknowledgment of that sarcasm, right?
Well, Chinese nationalism is raging in this forum, and sometimes I just can't tell if people are serious or not. For example, Asymptote suggests that the J-20 is possibly inferior to F-22 and PAK-FA. This is an entirely reasonable assertion given that China has less technology and less experience, yet apparently you all refuse to accept this as a possibility.
 

Asymptote

Banned Idiot
Experience and capability are not pure functions of each other. In fact, technological capability (which is what we're really talking about), is determined by several other factors that carry far more weight than experience. Furthermore, the lack of "experience" does not deterministically imply incapability. You're tying your assessment of a country's overall technological capacity to your assessment of the airframe, which is fallacious. The only direct determinant of the airframe's performance is its physical properties and not what you think of its country's technological capabilities. This is something you are not an expert on, and using what you think of a country's capabilities to fill in the gaps in knowledge is fallacious.

To show how faulty and inconsistent that logic is, we can use the Space Race. The US thought that the USSR was technologically inferior and couldn't possibly beat the US into space. Then the USSR launched Sputnik. Then, if you continue to apply that logic, because the USSR had more experience with space travel, the US couldn't possibly build a better platform on their first go.


Agree, valid point.


Are you skeptical that South Korea is now one of the most developed countries in the world even though it was still backwards before 1954? Are you skeptical that China only took 40 years to become the 2nd largest economy in the world despite the fact that it was a mess for 140 years prior? That's the kind of faulty conclusions your logic allows for.

South Korea had a lot of direct financial and technological help even til this day (Korean Aegis, F-15K, F16K...etc etc). China had a lot of FDI (Foreign Direct Investment) to kick start its economy. Without those "boost", China and Korea would not be what they are today. With little to no technology and FDI help, it would have been more like Africa, a forgotten continent still in dark ages.

Your skepticism is meaningless if it's not logically consistent. It is also not meaningless if it's not logically balanced. I could match your skepticism that China has no experience with my skepticism that the US is in decline, but I don't because it's a piss poor thing to base an argument on.

Can't argue at this point, I am too tired... :D


The fact of the matter is despite your skepticism China has assembled a stealth platform which meets its design requirements, which in turn only makes sense if it helps China against the US (because that is the only significant security rival it has in the region). Unless you know more about how to measure RCS, your skepticism and attempts to use arguments unrelated to the physics of stealth shaping is meaningless in assessing just how stealthy the J-20 is.


Again, I don't disagree. I am no expert, I am just trying to present a convincing counter argument.
I would love to hear a real expert shading some light on this.



Russia failed because it didn't have money. The fact that China doesn't have a strong a grasp on one technology is a fallacious way to claim that it doesn't have a grasp on any technology. Different technologies are discrete from each other, and therefore how far along a country is in one technology is not an indication of its progress in another. (Otherwise comparative advantages wouldn't exist). To put it short, this is a
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You are not wrong, it seems I am falling into fallacy of composition.


Chinese submarines.
In any case, just because you don't think they can doesn't mean they can't, or that they won't come up with these systems eventually. The fact that we are seeing a stealth platform indicates that what they don't have they're quickly acquiring. The fact of the matter is we have only corollary hints as to how far along China is with its avionics technology. However, I will point out that China has a much better semiconductor and computing industry than Russia does, and modern avionics is heavily dependent on that.



It seems you didn't read my previous edited post -


No, of course J-20 doesn't have to as stealthy as F-22 or PAK-FA to be comparable. If its subsystem and weapons are superior, it could be comparable. So, let's say J-20 can detect F-22 or PAK-FA and fire its BVR missiles before F-22 or PAK-FA can. Now, this argument - let me just ask you one question. Have you ever heard of ANY weapon system in Chinese inventory that's superior to Russian or American example in same category???

WELL???

If China has no weapon system that's superior to US/Russian (let's be specific, BVR missile most likely PL-12, and radar), what chance does J-20 be comparable to F-22 or PAK FA? In your dream?

Good discussion! :D
Anyway, bed time for me. Good night!
 
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tanlixiang28776

Junior Member
Well, Chinese nationalism is raging in this forum, and sometimes I just can't tell if people are serious or not. For example, Asymptote suggests that the J-20 is possibly inferior to F-22 and PAK-FA. This is an entirely reasonable assertion given that China has less technology and less experience, yet apparently you all refuse to accept this as a possibility.

I can accept it if its based on factual assertion. Asymptote is not an aerospace engineer, or even engineer at that. He also quotes posts from other sites to try to prove his point which are also not based on fact. His entire argument is that China is new and is inferior.
 

AssassinsMace

Lieutenant General
Chinese nationalism is raging in this forum? That's rich. Care to look at any other nationality's forum? Just take a look in those forums when the J-20 came out. It's not nationalism in here that bothers people. It's having a thought that does not comform to the self-anointed superior's wishes. I suggest anyone who doesn't like a Chinese having a thought that does not meet with your approval don't come visit here if it bothers you. I know... this all about policing the Chinese with only what you think is right. Ironic coming from those that hide behind rights and freedoms. Let's talk about those that bring up China into discussions that have nothing to do with China. Like Libya. I knew someone would try link China in with that situation. What about bringing up the Boxer Rebellion in context to Libya. Which in turn brought the ugly Western laundry which in turn brought accusations by the China critics of going off topic. Well China and the Boxer Rebellion has nothing to do with the situation in Libya. We know there are trolls trying to stir things up in the guise of debate. I just saw one call someone else a troll. I would suggest the moderators do the same to these people as when there's "Western-bashing."
 
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