J-20... The New Generation Fighter

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Deino

Deino

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Re: New Generation Fighter

Centrist said:
These are prototypes, no two prototypes are the same. If there is a difference in the size of the intake, it's because they were testing different intake sizes.
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NO ... it's simply - as "latenlazy" already pointed out - the first picture was a PSed doctored one. These two pictures are showing the same 01-prototype.

Deino
 
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no_name

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Re: New Generation Fighter

latenlazy said:
I meant that there have only been 3 planes that have used DSI, and none of them are adjustable. The three planes are the F-35, the JF-17, and the J-10B.
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I think F-16 have also been tested with DSI, but it's only a prototype(?)
Is DSI a relatively new application, or have aircraft designers just not bothered with it?
 
Blitzo

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Re: New Generation Fighter

no_name said:
I think F-16 have also been tested with DSI, but it's only a prototype(?)
Is DSI a relatively new application, or have aircraft designers just not bothered with it?
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Well there was also that J-7 DSI testbed pic floating a while back before -- I think it'd be more accurate to say that there are three planes with DSIs that are in production/set for immediate production.
 
siegecrossbow

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Re: New Generation Fighter

no_name said:
I think F-16 have also been tested with DSI, but it's only a prototype(?)
Is DSI a relatively new application, or have aircraft designers just not bothered with it?
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I thought Maxx summed it up pretty well so I am going to steal his analysis. Hopefully he won't mind!

The DSI essentially uses a bump to block off chaotic airflow at supersonic speeds (I believe the term is boundary layer separation) and slowdown and smooth out this airflow before it reaches the engine (otherwise the engine would stall). There should be a certain speed limit to an aircraft with a DSI because as the plane flies faster airflow gets more chaotic and the boundary layer (the airflow) increases to a point where the bump can no longer block or smooth it.
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Which is why a variable inlet will still be useful even when the DSI is used.

Known planes with DSI inlets (JF-17 and F-35) both have max speeds of around 1.8 mach. I wonder if that is the reason.
 
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Gallaghan36

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Re: New Generation Fighter

I predict that China will have at least 20 stealthy fighters comparable to PAK-FA and F-35 by the year 2017. However, it'll probably take China until the year 2025 for it to make a fighter as stealthy as the F-22 Raptor.:(
 
rhino123

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Re: New Generation Fighter

Gallaghan36 said:
I predict that China will have at least 20 stealthy fighters comparable to PAK-FA and F-35 by the year 2017. However, it'll probably take China until the year 2025 for it to make a fighter as stealthy as the F-22 Raptor.:(
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Base on what do you claim that? Plucking figures from thin air or are you the great howdini?

Whatever you say in this forum must have some creditable backing.
 
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carandol

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Re: New Generation Fighter

Gallaghan36 said:
I predict that China will have at least 20 stealthy fighters comparable to PAK-FA and F-35 by the year 2017. However, it'll probably take China until the year 2025 for it to make a fighter as stealthy as the F-22 Raptor.:(
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I think we all can agree that the Chinese will have to learn about stealth just like the US did. The just didn't develop the F-22; first was the F-117, then the B-2, then the F-22. They obviously incorporated lessons learned by designing, testing, operating and maintaining those aircraft. We will just have to wait and see if the Chinese are able to shorten the learning curve.
 
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