J-20... The New Generation Fighter

According to Andrei Pinkov, the engines installed on J-20 are definitely not from Russia, he swear this fact by saying he "know the Russian engines as clear as he know his guts".

Can someone well versed in aerodynamics explain to me the canards that are a good part in the same level as the wings, or not very much higher than the wings. Life wise, canards should deflect air over the wing and keep the boundary layer from separating too early, to increase lift. Is that correct? In order for that to work, canards should, logically, be at least somewhat higher than the wing. Yet we have su-33, which needed extra lift to get off the carrier, and which has canards in the same level as wings. J20 here has somewhat higher positioned canards, mainly because of their anhedral angle compared to downhedral angle of the wings, but it is still a far cry from majority of canard/wing combos we see - like j10, rafale, typhoon, gripen, mig1.42, viggen, some mirage variants and so on.

I would assume it is also a matter of level of lift aid, lift efficiency and so on. And i'm sure there were other requirements, like RCS, in play. But, how much lift do canards add lift in su33 case and how much do they add in j20 configuration, compared to 'classical' high canard low wing combo?

siegecrossbow said:

Hello guys rumors are out on CD, once again. The J-20 may fly on January 6th, 2011. Let's see if it really happens .

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If you want rumors, some are claiming first flights have already occurred last year and I have no problem believing that especially given the ridiculous openness of the whole thing in Chengdu indicating high confidence level.

These are a lot of questions with regard to canards. I'll answer just one. When the aircraft flies at a high angle of attack the vortices leaving the tips of the canards will pass on the upper side of the wing, where they help keep the air flow attached to the wing, even if the canards are mounted in the plane of the wing. It is then also possible to deflect wing flaps somewhat further. Increasing the angle at which the air detaches from the wing and the increased flap deflection both increase the lift, allow the aircraft to fly at lower speed.

If this is genuine,it looks like it shows a little more than lifting the nose on the taxi test.

Re: Fc-20 = J-10?

Any chance for the Pakistan getting hands on J-20 ?

zoom said:

If this is genuine,it looks like it shows a little more than lifting the nose on the taxi test.

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According to one witness' note on Sina military, the taxi run ended with the release of drogue right after the plane had its front landing gear lifted...

70092 said:

According to Andrei Pinkov, the engines installed on J-20 are definitely not from Russia, he swear this fact by saying he "know the Russian engines as clear as he know his guts".

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Well let us hope that he is actually right this time around...

I justed watched phoenix TV has reported news about J-20 fighter, the news report showed many J-20 prototype photos from internet.
my understand is: CCTV would not report this news but pass to phoenix TV, all chinese people can watch this news now.

danielchin said:

According to one witness' note on Sina military, the taxi run ended with the release of drogue right after the plane had its front landing gear lifted...

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yes it does make you wonder why they didn't wait for it to be fully airborne before taking the picture.