I would go with this also, but especially when the canards and tail fins are turned every which way, and not nice-and-straight like in the picture above. When you can see all the control surfaces, it looks like a nasty insect, which I think is cool.
J-20... The New Generation Fighter II
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I would go with this also, but especially when the canards and tail fins are turned every which way, and not nice-and-straight like in the picture above. When you can see all the control surfaces, it looks like a nasty insect, which I think is cool.
From the front, it looks nearly identical to the F-22, except chubbier, lol, mainly because of the rhomboid shape of the fuselage, and the cancerous looking DSI bumps on the cheeks, which I guess is sort of unavoidable due to design constraints presented by stealth shaping. I actually really like the planform view, as I think that's where it looks the most unique and futuristic.
Also, someone's model:
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Ambivalent
Junior Member
People I know with expertise in aircraft structures are scratching their heads over the vertical stabs.
I have some question. Suppose J-20 project started in the 90s or late 90s. Russian ask China for participation in their PAF-KA project but was rejected by the Chinese. I mean at that time, China is still not very advance in the aviation area and not to mention, modern aviation engine was even weaker.
What makes them so confident in thinking they can succeed this project alone? Usually, PLAAF top brass is quite conservative in their approach. Even participating in Russian project will not gain much in experience and knowleadge but at least China will stand to buy the 5th gen aircraft just like what the Indians are doing..
I don't mean J-20 is already a success but from the way it turn out now for the prototype, it seems like a bold decision to make when they reject the Russian offer that time.
What makes them so confident in thinking they can succeed this project alone? Usually, PLAAF top brass is quite conservative in their approach. Even participating in Russian project will not gain much in experience and knowleadge but at least China will stand to buy the 5th gen aircraft just like what the Indians are doing..
I don't mean J-20 is already a success but from the way it turn out now for the prototype, it seems like a bold decision to make when they reject the Russian offer that time.
vesicles
Colonel
You got to sever the cord sometime. It's better to become independent sooner than later. I don't think China has ever felt that depending on someone else on anything is the way to go. Even when China was backward, its goal has always been to become a leader... So buying weapon systems from another nation is simply a method to acquire the technology and to bridge the gap.
In the 90's, China already had some of the best 4th gen fighters in Su-27. I believe China was studying the design of 4th gen fighters carefully at the time and believed that, since China and Russia both only had 4th gen fighter at the time, the aviation technology gap between the two nations may be narrow enough for China to bridge by itself. At the time, China has been developing J-10 for quite a while and might feel good about their capabilities. And China felt that it might be in a position to develop the 5th gen fighter independently.
Plus, the terms of collaboration on PAK-KA might be too harsh for China to accept...
airsuperiority
Captain
To support your ideas, the boycott of '89 taught the Chinese further not to rely on anyone. At the same time, the YF-22's appearance showed a target for where to aim, including design and flight characteristics.
I also agree. But I think that the J-20 project likely began in the mid-90s (though studies into 5-gen tech began as early as 1989). The competition and selection of the Chengdu design occurred around 2002. The Pak-Fa design selection also occurred around the same time. The Chinese realized that the Russians were not much further along than they were. That, combined with the difficulty of negotiating with the Russians on just about anything, led them to conclude that it was best to go it alone.
Looks like a good decision.
Brief summary from parts of the article:
All-moving tail fins were used to increase control surface area under supersonic conditions.
The vortex created at the front of the aircraft body will create a tendency for the tail section to swerve (like when you pull up the nose slightly and then roll)
This causes the plane tail section and tail rudder to experience a downward pressure, affecting adversely its vertical stability under high angle of attack. Making the nose of the plane hard to press downward. (in extreme cases it will do a flip and enter tail spin)
To solve this problem, the size of the tail is reduced from 20-25% to 10-13% (it didn't say with respect to what)
The tail is swept back due to consideration of the area rule, as the J-20 cannot extend it's horizontal stabilizers past the abrupt change in cross sectional area after the engine nozzle (like F-22 can) (since it uses canards instead)
F-22 and T-50 use slightly forward "butterfly tail", this is to reduce the blockage of tail surface by the aircraft body at high AoA. J-20 does not need to consider this because it had canards
hope this helps.
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