Chinese 5th Gen Fighter Photo - Aviation Week

**Tomluter** · 19 Feb 11,, 13:57

Originally Posted by citanon

LOL, no I was just guessing that the bumps are sensors used to precisely track the position and orientatin of the helmet. One design for such a system is to have a magnetic fields of known position and orientation in the cockpit that are picked up by sensors on the helmet.

I think so.

The bumps are use to the 3D motion capture. To detected the motion and position of the pilot's head. Be designed to letting the computer choose which information detected form sensors that spread over the fuselage should be displayed for the pilot.

That is a standard technology in USAF's 5th-gen fighters.

**Jimmy** · 19 Feb 11,, 15:07

I can't imagine the recognition software would be so terrible that it would need that many large reference points. It looks horribly misshapen, which means more material used, which means higher production cost.

**andrew** · 19 Feb 11,, 15:08

Originally Posted by Tomluter

That is a standard technology in USAF's 5th-gen fighters.

This is a standard technology ever since the Soviet Union had introduced in 1983 the MiG-29 featuring a helmet-mounted-display integrated with the R-73 missile.

Edit: perhaps a 'helmet mounted cueing system' is a more correct term in English.

**cr9527** · 19 Feb 11,, 18:29

Originally Posted by andrew

This is a standard technology ever since the Soviet Union had introduced in 1983 the MiG-29 featuring a helmet-mounted-display integrated with the R-73 missile.

Edit: perhaps a 'helmet mounted cueing system' is a more correct term in English.

I have seen none that are THAT bumpy.

I don't see anything on ths helmet.

**andrew** · 19 Feb 11,, 18:57

We don't know yet, what functions they are going to include in that device.
I'm sure, every bump has its own purpose.
Perhaps, it's not so pretty and sci-fi looking, but who cares.

**Skywatcher** · 20 Feb 11,, 06:40

Maybe it's shaped that way so they can add on modular upgrades to the helmet?

**Tomluter** · 20 Feb 11,, 14:21

Originally Posted by andrew

This is a standard technology ever since the Soviet Union had introduced in 1983 the MiG-29 featuring a helmet-mounted-display integrated with the R-73 missile.

Edit: perhaps a 'helmet mounted cueing system' is a more correct term in English.

You carried us back to the last century.

Find this thing in the picture---(new English BAE helmet for F-35), looking for some information about it.
Welcome to new century, our cccp big brother.

**Tomluter** · 20 Feb 11,, 15:23

Why does J-20 have not rivets?

Integral Airframe Structures IAS.
Composite material integral panel.

Of course, J-20 depened on the absorbing materia layer in the composite material integral panel to stealth.( not depened on absorbing painting-coat) . same to F-35 again.

**Tomluter** · 20 Feb 11,, 15:35

Compare with traditional technique.
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a, traditional skin,purlin were connected with rivet.
b, integral panel

old technique-
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**Tomluter** · 20 Feb 11,, 15:52

Consulting American Boeing Integral Airframe Structures，IAS
Picture is that a piece of integral panel use to Boeing 7e7. and IAS.

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**andrew** · 22 Feb 11,, 09:39

Originally Posted by Tomluter

You carried us back to the last century.

Find this thing in the picture---(new English BAE helmet for F-35), looking for some information about it.
Welcome to new century, our cccp big brother.

just for information purposes - the F-22 has no helmet mounted cueing system.
And they call it a fifth generation fighter.

**gf0012-aust** · 22 Feb 11,, 09:43

Originally Posted by andrew

just for information purposes - the F-22 has no helmet mounted cueing system.
And they call it a fifth generation fighter.

what has HMCS got to do with defining a 5th Gen capability?

again,

the US has retired its first manned VLO platform after 30 years of flying
the F-22 has been in operation for how many years?
what signal management is there on the J-xx?

how many J-xx's are there?
What else is part of a J-xx's system event? (5th gen capability is not just about the platform, its a systems event)

**andrew** · 22 Feb 11,, 10:29

Originally Posted by gf0012-aust

what has HMCS got to do with defining a 5th Gen capability?

I am addressing this sentence of other poster

Originally Posted by Tomluter
That is a standard technology in USAF's 5th-gen fighters.

1)The F-22 doesn't have that system despite the fact that it's called a fifth generation fighter.
2)Helmet mounted cueing systems became a standard technology in the Soviet fourth generation fighters.

**Tomluter** · 22 Feb 11,, 14:11

Originally Posted by andrew

just for information purposes - the F-22 has no helmet mounted cueing system.
And they call it a fifth generation fighter.

My mistake,
F-22 has not so far. It have been designed 20 years ago after all. even that birds depends on radar absorbing paint-coating and plastic cloth to stealth. But all of those things do not affect generations differentiated ,just technolog progressing ,see their f-35.

**andrew** · 23 Feb 11,, 13:34

There is an article about the J-20 in the new Russian edition of Popular Mechanics.
The author has disclosed some interesting details:

In recent years, apart from the finished engines, China has been buying parts of the Al-31 core to the tune of more than $100 million annually. While the used parts of the previously purchased engines are not returned to the Russian manufacturers, as it usually happens. The assortment of the purchase suggests that the new parts are used to assemble Chinese engines with the Al-31 core.
In 2009 China had asked for a new engine of the 14-15 ton thrust class with 3D thrust vectoring nozzle for a new heavy aircraft.
Later, the Chinese delegation on the military cooperation negotiations has asked for a new version of the Al-31FN with an extreme electric power generator of 0.5 megawatt per engine, which can be switched on for 1 minute two times during the life of the engine. That solicitation, in the author's opinion, suggests that Chinese designers plan for some high-energy-consuming emitters on board of the J-20.
In the earlier edition of that article, published on-line, the author suggested that those emitters could be either plasma generators or high-power jammers. But in the Popular Mechanics edition of the article he has withdrawn that guess-work and speaks only about 'high-power emitters' without specifying.