J-21/J-31 Chinese 5th Generation Stealth Fighter

t_co

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That isn't what Armand said.

I know precisely what China is up to, it involves a xerox machine.

50 cent Army should shut up.

All is already revealed.
He's saying that the only defense R&D China is doing involves stealing foreign technologies; he's saying that all Chinese posters here are being paid for their posts, and he's saying that he ( @Armand2REP ) is all-knowing.

I'm curious as to his proof here. If he can't offer proof, I'd like the mods to take action against him.
 
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t_co

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Nice pic

The fact that there's a wingtip vortex trailing off only one wing implies that wing is generating a lot more lift than the other wing is. This means the plane is exiting halfway through a turn and straight into an inverted climb, which implies that the engines are generating at least a 1 to 1 T/W ratio, or else the plane would be unable to turn upward like that.
 

trackwhack

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Nice pic

The fact that there's a wingtip vortex trailing off only one wing implies that wing is generating a lot more lift than the other wing is. This means the plane is exiting halfway through a turn and straight into an inverted climb, which implies that the engines are generating at least a 1 to 1 T/W ratio, or else the plane would be unable to turn upward like that.

Stunning indeed. A capability that Russian MIGs of the 60's struggled to achieve. China the man.
 

ersakthivel

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Nice pic

The fact that there's a wingtip vortex trailing off only one wing implies that wing is generating a lot more lift than the other wing is. This means the plane is exiting halfway through a turn and straight into an inverted climb, which implies that the engines are generating at least a 1 to 1 T/W ratio, or else the plane would be unable to turn upward like that.
that is not an aerodynamic vortex but a photo shop vortex or smoke used in airshow display is my opinion.Look carefully at the wing tip which is generating this so called vortex.
post some specs , again don't turn it into military pictures type thread.
There is a separate thread for that purpose.
 
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Decklander

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Nice pic

The fact that there's a wingtip vortex trailing off only one wing implies that wing is generating a lot more lift than the other wing is. This means the plane is exiting halfway through a turn and straight into an inverted climb, which implies that the engines are generating at least a 1 to 1 T/W ratio, or else the plane would be unable to turn upward like that.
In a turn, the higher wing has higher velocity and so the vortices cause condensation thr first and later on the inner wing. It is for this reason that when an aircraft stalls during a turn, it rolls out of the turn.
 

farhan_9909

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can we term J-21 as the best aircraft ever developed in the history of aviation?
 

p2prada

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can we term J-21 as the best aircraft ever developed in the history of aviation?
Not even close to the latest 4th gen frames. Just look at the engine. Apart from that we know nothing about Chinese avionics quality. Too many uncertainties here.

We can determine which is the best only at the end of their service life.

You don't bet on a horse that has never even run its first race.
 

t_co

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btw guys, that photo is of the J-20, not the J-31.
 

mikhail

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can we term J-21 as the best aircraft ever developed in the history of aviation?
you are joking right:shocked:!J-21 can't even be called a proper 4.5 generation aircraft without a good engine(which china can't build on its own) and you are already terming it as the best aircraft in the aviation history:taunt:!you pakis are always so desperate to appease the chinis just to get some free goodies:rofl:
 

t_co

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New year,new picture:



:cool2:
The nose still looks a little small to me. They should work on fattening that area up to fit a larger AESA radar.
 

Armand2REP

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Nice pic

The fact that there's a wingtip vortex trailing off only one wing implies that wing is generating a lot more lift than the other wing is. This means the plane is exiting halfway through a turn and straight into an inverted climb, which implies that the engines are generating at least a 1 to 1 T/W ratio, or else the plane would be unable to turn upward like that.
It doesn't imply anything except pressure building on the wing. How much no one knows.
 

Armand2REP

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The nose still looks a little small to me. They should work on fattening that area up to fit a larger AESA radar.
The smaller the surface area the better. It reduces RCS. It uses a small Zhuk radar set so it is plenty of room.
 

t_co

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The smaller the surface area the better. It reduces RCS. It uses a small Zhuk radar set so it is plenty of room.
Not necessarily. Also, having a larger AESA would increase the number of AESA modules the J-31 can fit. The J-31 won't be using a Zhuk radar once it hits LRIP in 2017 or 2018.
 

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