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-   -   J20 shows its teeth (https://www.pprune.org/military-aviation/615343-j20-shows-its-teeth.html)

glad rag 12th Nov 2018 08:41

J20 shows its teeth
 
https://cimg8.ibsrv.net/gimg/pprune....7391d61b2.jpeg

What we see isn't necessarily surprising, but it is interesting nonetheless. In the main ventral bays, the J-20 is carrying four PL-15 medium-to-long-range air-to-air missiles. The type is somewhat analogous to the American AIM-120D AMRAAM. Speculation about what missile actually would hold the PL-15 designation has bounced around a lot, with very long-range missiles and those fitted with throttleable ramjets also potentially receiving the designation, but now it seems the PL-15 is indeed a dual-pulse motor and AESA equipped missile with a similar profile as its predecessor PL-12. The PL-12 is loosely analogous to the AIM-120A/B.

https://cimg1.ibsrv.net/gimg/pprune....648290d140.jpg




China's J-20 Stealth Fighter Stuns By Brandishing Full Load Of Missiles At Zhuhai Air Show

pr00ne 12th Nov 2018 08:47

That thing looks about as stealthy as a VERY large house brick

unmanned_droid 12th Nov 2018 09:39


Originally Posted by pr00ne (Post 10308878)
That thing looks about as stealthy as a VERY large house brick

I think that's a good thing!

Treble one 12th Nov 2018 09:56

Interesting positioning of the foreplanes (or are they canards??).

Looking like SAAB had a hand in this one??? Probably not though...

glad rag 12th Nov 2018 10:36


Originally Posted by pr00ne (Post 10308878)
That thing looks about as stealthy as a VERY large house brick

seems a bit of a conundrum at the moment

you can have stealth but no missiles or missiles but no stealth!

air pig 12th Nov 2018 11:08


Originally Posted by Treble one (Post 10308943)
Interesting positioning of the foreplanes (or are they canards??).

Looking like SAAB had a hand in this one??? Probably not though...

Maybe not willingly.

orca 12th Nov 2018 14:46

Interesting that the heater appears to be in a semi deployed ‘external’ position - as if to confirm that they haven’t cracked the ‘lock before launch from a bay’ conundrum. Or rather they have in a very clunky ‘remove from bay - pause - lock before launch’ way.

ASRAAMTOO 12th Nov 2018 15:19

Wonder how those PL15s get launched. Does not look to be much space for a downward ram and gravity is rather less than ideal on a fighter!

unmanned_droid 12th Nov 2018 15:35

There must be a trapeze or ram system to push out the PL15s. There are no flow diffusers at the front edge of the bay so the missile won't freefall in to the airstream anyway - it will just bounce off and back in to the bay and then just bounce around in there.

Pontius Navigator 12th Nov 2018 18:31


Originally Posted by orca (Post 10309126)
Interesting that the heater appears to be in a semi deployed ‘external’ position - as if to confirm that they haven’t cracked the ‘lock before launch from a bay’ conundrum. Or rather they have in a very clunky ‘remove from bay - pause - lock before launch’ way.

Once you're in heater range do you need stealth?

As for the LR missiles, ejection release units don't h ave to be large.

TEEEJ 12th Nov 2018 19:56

J-20 demo at Zhuhai Airshow 2018.


Ewan Whosearmy 12th Nov 2018 20:19


Originally Posted by TEEEJ (Post 10309345)
J-20 demo at Zhuhai Airshow 2018.


Stealth aside... their formation flying is terrible!

ShyTorque 12th Nov 2018 20:45

The best defence is to tell 'em we can't see it - even though we can! :E

unmanned_droid 12th Nov 2018 21:24


Originally Posted by Ewan Whosearmy (Post 10309357)
Stealth aside... their formation flying is terrible!

Good find Teej! Thanks for sharing.

Even so Ewan...if Fairford promised me that display next year, they could triple the price and I'd still pay up!

I thought their roll rate was quite impressive at times.

I have to admit, I think its a pretty cool looking aeroplane. But then this was what I used to make out of lego when I was a kid.

Ascend Charlie 12th Nov 2018 23:44

They might be stealthy to radar, but it easy to see the smoke trails.

SnowFella 13th Nov 2018 08:18


Originally Posted by orca (Post 10309126)
Interesting that the heater appears to be in a semi deployed ‘external’ position - as if to confirm that they haven’t cracked the ‘lock before launch from a bay’ conundrum. Or rather they have in a very clunky ‘remove from bay - pause - lock before launch’ way.

Looks like there's a secondary internal bay for the heaters to me, lots of video bits that don't show them hanging externally but lots of hinting at a secondary internal storage for them.

unmanned_droid 13th Nov 2018 10:24


Originally Posted by SnowFella (Post 10309703)
Looks like there's a secondary internal bay for the heaters to me, lots of video bits that don't show them hanging externally but lots of hinting at a secondary internal storage for them.

yes, it looks like they rotate out of the bay just above them.

doors open -> missile rotates out -> doors close

glad rag 13th Nov 2018 11:05

Read the linked article.

https://cimg4.ibsrv.net/gimg/pprune....84f9dbd38e.jpg

unmanned_droid 13th Nov 2018 13:32


Originally Posted by glad rag (Post 10309832)

Yeah, to be honest, the drive and those articles aren't my go-to for aerospace articles. I said in two lines what Tyler took paragraphs and paragraphs over. Most of it is implied if you know what you're looking at.

orca 13th Nov 2018 16:11

Do you need LO inside heater range? Yes, of course you do.

dook 13th Nov 2018 16:33


.. their formation flying is terrible!
That is an understatement !!

chevvron 13th Nov 2018 19:55

Why are their bomb doors sorry weapons bay doors permanently open, even the two in formation; haven't they found out how to close them?

Stitchbitch 14th Nov 2018 06:02


Originally Posted by chevvron (Post 10310315)
Why are their bomb doors sorry weapons bay doors permanently open, even the two in formation; haven't they found out how to close them?

They appear to close at 1.26.

KenV 14th Nov 2018 16:22


Originally Posted by Ascend Charlie (Post 10309500)
They might be stealthy to radar.....

Very very unlikely. Too many different angles and too many large gaps. For example:
Leading and trailing edge of canard/foreplane are different.
Both the foreplane angles are different than the wing angles.
And the wing is cranked so has multiple angles
Leading and trailing edges of ventral fin are different from each other and different from wing and foreplane and different from vertical fins.

Big gap between foreplane and body, meaning big corner reflectors in the all important forward aspect.
Big gap between moving leading edge flap and fixed leading edge of wing, so more corner reflectors in the all important forward aspect.
The nose is also double chined with different chine angles. Bad for forward aspect reflectivity.
The intake angles are very different than the wing or the foreplane angles. Again bad for forward aspect reflectivity.
Sharp crease where the engine inlet cones meet the fuselage. More bad for forward aspect reflectivity.

MPN11 14th Nov 2018 16:48

So, basically, NOT stealthy. Just big and nimble (3:30 on the video).

You can hear it miles away, though!

PEI_3721 14th Nov 2018 18:17

There is something about the J20 which ‘states’ practicality and capability more that might be credited.
Form follows function; long range intercepter, stealth as required for weapons system range. Many internal weapons, adding considerable range and opportunity.
Radar unknown, but consider recent Chinese developments of anti-stealth quantum radar; it’s coming perhaps not yet.
So a capable aircraft, development potential, range, manoeuvrability; single crew suggests integrated systems, autonomous operations.
In its own way it looks right.
Take note

MPN11 14th Nov 2018 18:25

BVR would be the interesting question if it came to a shooting match, but otherwise that looks like a competent platform for patrolling/'defending' the Spratly shoal and other parts of China's perceived 'territory'.

Rosevidney1 14th Nov 2018 18:31

I agree with MPN11. That looks like a competent machine and the Chinese possess all the skills required to operate it from their homeland.

Davef68 15th Nov 2018 09:14

IR missile looks like a RedTop

IcePaq 15th Nov 2018 18:17

Doesn't look "nimble" at all.

etudiant 15th Nov 2018 19:00


Originally Posted by IcePaq (Post 10312278)
Doesn't look "nimble" at all.

Seemed to turn quite handily in the videos despite its looks.

tartare 16th Nov 2018 02:21

Quite a blue note there as they approach - very Thunderbirds.


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