J-20 5th Gen Fighter Thread IV (Closed to posting)

[ladioussupp]

Root of the LERX is of different colour covering, ...

Massive canards, they are comparable in size to the V tails. Maybe that tells us that they are meant to work closely together or even kind of complementary and definitely not only used for trimming (?)

The wash down air streams/vortex from canards are quite strong. The LERX root may require stronger material.

For example, one of F-CK-1 prototype crashed due to the lost of a alumina alloy tail fin which is at the same level of main wing. So the tail fins of production version are made of composite material.

 

[latenlazy]

Massive canards, they are comparable in size to the V tails. Maybe that tells us that they are meant to work closely together or even kind of complementary and definitely not only used for trimming (?)

They are definitely not comparable to the size of the V-tails. The span and length are both shorter. The canards look so big because their frontal area is being compared to the frontal area of the rest of the plane. If the V-tails were deflected so their face was towards the camera they would look bigger.

 

[Equation]

They are definitely not comparable to the size of the V-tails. The span and length are both shorter. The canards look so big because their frontal area is being compared to the frontal area of the rest of the plane. If the V-tails were deflected so their face was towards the camera they would look bigger.

True, but even from this angle it's still look pretty big even when the V-tails in the foreground and the canards in the background.

 

[Air Force Brat]

They are definitely not comparable to the size of the V-tails. The span and length are both shorter. The canards look so big because their frontal area is being compared to the frontal area of the rest of the plane. If the V-tails were deflected so their face was towards the camera they would look bigger.

Actually the canard appear to be of equal or greater area than the all flying verticle stabs, now if you include the area of the vents, ah Ok, but you really must consider them as separate surfaces, as the vents are fixed, and the verts are all flying. The canards on the J-20 are also all flying and may be more effective at pitch control than the elevons or ruddervators. In any regard the canards, ruddervators, and elevons and flaperons, all participate in direct pitch control, so without any doubt the J-20 will have lots of "pitch authority". I think no-name is right, the canards have more surface area than the vertical stabs, but there will be no doubt that the FCS of the J-20 is very complex and effective, all by design as Dr. Song intended the J-20 to have lots of pitch authority, with or with-out OVT, and he himself commented on the very high level of complexity of the FCS.

 

[Air Force Brat]

Any more "lack of funding", "corruption hindered development", "ran into stagnation" etc etc?

Ok, you are calling me out, and I was wrong about the lack of funding holding up the J-20, what I said was that the global economic downturn was also affecting China, I stand by that, but it is obvious that the J-20 project has been placed at a very high priority, and for those who care to check my posts, I did note that the East China Sea ADIZ would "vault" the J-20 into a very high priority, this has happened apparently. Now do the indigenous carriers, Y-20, and J-31 all suffer as a result???? Just remember, its all kool, but it all has to be paid for, and like the rest of us citizens, the Chinese people will "foot the bill", just to way it works.

Yes it does bother me to be wrong, but not nearly as much as it bothers me to be in-accurate, and yes I do spend a lot of time studying the tea leaves..... brat

 

[Air Force Brat]

True, but even from this angle it's still look pretty big even when the V-tails in the foreground and the canards in the background.

They are huge! probably the largest canards on any comparable sized aircraft! and they have the longest moment arm of any current canards due to their "distant coupling".

 

[by78]

Sticking the landing...

(2048x1356)

 

[no_name]

Open in new tab to see larger.

 

[Equation]

Is that new? Does anyone had any idea what that is?

 

[broadsword]

Is that new? Does anyone had any idea what that is?

It is the electro-optical Distributed Aperture System (DAS).

The F-35's DAS as per wikipedia provides three basic categories of functions in every direction simultaneously:

Missile detection and tracking (including launch point detection and countermeasure cueing)
Aircraft detection and tracking (Situational awareness IRST & air-to-air weapons cueing)
Imagery for cockpit displays and pilot night vision (imagery displayed onto the helmet mounted display)