J-10 Thread IV

[taxiya]

Looks like they made some changes to the wings and flaps, internal only by the looks of it. Related to introduction of TVC?

Perhaps sensors for test and calibrate TVC when writing controlling computer codes.

 

[Ariana]

Newly produced J-10S starting flight test in CAC.

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View attachment 49632

I couldn't ununderstan, J-10B/C Version completely different from " A" Version, How they train new pilot for J-10B/C?
Why didn't they built the two Seater version of the J-10B/C? Very Irrational

 

[taxiya]

demonstration to #2754


The reason for the two section outer petal is just the placement of the push bar hinge is further out closer to the tip.

 

[latenlazy]

It's always a compromise between weight, thrust penalty and complexity/cost. If minimizing thrust losses is the paramount concern, Saturn's ball joint solution is probably the gold standard: all cross sections always remain circular, long divergent section, independent exit area control (although the latter is a feature of all the TVC nozzles discussed here). Requires loads of actuators though.

A version of Eurojet's design with a WS-10/PW1120-style short divergent section would sit at the opposite end of the spectrum (weight/complexity optimal, higher thrust penalty).

The TVC WS-10’s divergent section doesn’t look any shorter than what seems typical for other fighter engines....

 

[Tirdent]

I don't think we'll definitively know without taking a tape measure to it (Deino??? ), but it certainly does to me. It also seems to fit nicely with a set of priorities which might compel you to choose an ejector nozzle previously, weight being one of the few advantages of that solution. In terms of post-1980 afterburning engines, the only designs I can think of which did not go for con-di are the WS-10 and M88.

 

[latenlazy]

I don't think we'll definitively know without taking a tape measure to it (Deino??? ), but it certainly does to me. It also seems to fit nicely with a set of priorities which might compel you to chose an ejector nozzle previously, weight being one of the few advantages of that solution. In terms of post-1980 afterburning engines, the only designs I can think of which did not go for con-di are the WS-10 and M88.

The nozzle petals for the TVC version are definitely longer than the non TVC version, judging by the pictures almost as long as the AL-31’s, and judging by the pictures the divergent section starts around where the nozzle petal starts (naturally). Might do some more precise measurements when I get home.

 

[Tirdent]

The nozzle petals for the TVC version are definitely longer than the non TVC version

That's a given, considering the non-TVC version doesn't have a divergent section at all.

 

[latenlazy]

That's a given, considering the non-TVC version doesn't have a divergent section at all.

Yes, but what I was trying to get at was the length comparison with the Al-31 nozzle petals

 

[Deino]

The nozzle petals for the TVC version are definitely longer than the non TVC version, judging by the pictures almost as long as the AL-31’s, and judging by the pictures the divergent section starts around where the nozzle petal starts (naturally). Might do some more precise measurements when I get home.

Ähhhm, maybe in case I missed something, but are you guys really comparing a non-TVC-AL-31-nozzle with the TVC-WS-10-nozzle??

Why?

 

[Deino]

@Viktor Jav and @TerraN_EmpirE

Is it really necessary to discuss the export failures of other fourth generation types and their missed sales opportunities in comparison to the F-16??