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

[Air Force Brat]

Here's another image. If real looks like the next J-20 will have some character. What's that raised line on the surface?

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Passive radar antennae, looks like the vertical stabs were too small, prolly came up in departure testing??? could also explain a lot of other things???? brat

 

[plawolf]

Here's another image. If real looks like the next J-20 will have some character. What's that raised line on the surface?

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That looks like a blatant PS job. That just looks like someone cropped off the device on the back end of the fins of a dogfighting missile and pasted it on the J20.

Most IRAAMs have a moveable flap like that at the end of their rear fins with a spinning wheel. I think they are a form of directional and airspeed sensor for the missile to help keep track of what speed and direction its going when doing hard, complex manoeuvres. But it's been a good while since someone explained them to me, so I may be misremembering.

 

[AssassinsMace]

That looks like a blatant PS job. That just looks like someone cropped off the device on the back end of the fins of a dogfighting missile and pasted it on the J20.

Most IRAAMs have a moveable flap like that at the end of their rear fins with a spinning wheel. I think they are a form of directional and airspeed sensor for the missile to help keep track of what speed and direction its going when doing hard, complex manoeuvres. But it's been a good while since someone explained them to me, so I may be misremembering.

Yeah it does look like it. I thought the thing was removable since the other pic shows it's not there. Not sure why they would have such a device.

 

[mack8]

Spot on Plawolf. Most likely the "cropped" fins are a PS as well (and the bort "2004" pictures imo).

 

[Blitzo]

The cropped fins are real IMO

The SRAAM fins obviously are not

 

[latenlazy]

C/P of my post in CDF

Zoomed into both images to inspect them. The second one (with sidewinder fin as Deino described it), seems pretty fake. If you look at the metal part up close you'll see that the shadow between it and the fin is much too dark to be real. Not as sure about the picture with the cropped fin. The only suspicious thing I could find when zooming in was a high degree of pixelation around one of the cropped corners. However, that could just be (and probably is) compression artifacts. Nothing else is unusual about it.

 

[Quickie]

The cropped stabilizers look real enough. Its top edge can be seen to have a camber shaped cross section.

 

[no_name]

I this can be believed, the decision to choose Chengdu's design over Shenyang's more conventional layout for China's fifth generation fighter was made around end of october, 2007.

While the first leaked flight of Chengdu's prototype J-20 was made in January 2011.

 

[airsuperiority]

That looks like a blatant PS job. That just looks like someone cropped off the device on the back end of the fins of a dogfighting missile and pasted it on the J20.

Most IRAAMs have a moveable flap like that at the end of their rear fins with a spinning wheel. I think they are a form of directional and airspeed sensor for the missile to help keep track of what speed and direction its going when doing hard, complex manoeuvres. But it's been a good while since someone explained them to me, so I may be misremembering.

I read before somewhere that those wheels were for stabilizing the missile's flight and aerodynamics, quite perhaps like a gyroscope's physics. Don't ask me where I read this; I don't remember LOL. I just remember I read this about the Sidewinder, and that time there was a text mentioning the wheel's purpose.

 

[no_name]

Here is an article about how the sidewinder works and also talks about the 'wheeled fin' which they call a rolleron.

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The wheel spins (pushed by air I guess) and therefore have rotational inertia and keeps the fin and the missile from rolling in flight, which makes it easier for the missile to follow its target. The missile changes direction by moving the control fins at the front, while the wings are non-moveable and used to provide lift for the missile body.