Nice pitch out, but he's prolly pullin 6 Gs or so, I rather doubt he is anywhere near limit?
To clarify, watch a few vids of the F-22, when you get closer to MAX G, the whole aircraft disappears in a cloud of vapor!
J-20 5th Gen Fighter Thread V
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To clarify, watch a few vids of the F-22, when you get closer to MAX G, the whole aircraft disappears in a cloud of vapor!
But that means the interim engines on the PAKFA( the AL-41) are of inferior quality to the AL-31? Also, does this mean that none of the J-20 prototypes have the WS-10G installed?
Not sure I think these blurred small images & videos are not really conclusive to say the current engines are better than ... otherwise I'm sure - honestly, I would bet a lot of Money - that all these reports about a WS-10G-equipped J-20 are simply fan-boys dreams ... the WS-10G itself is more a mystery than a realy woring hardware for me.
PS/edit: not that I would dismiss such a version, but IMO it is surely not operational yet.
Deino
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Well, seeing as the WS-10 was successfully used in the J-11 series(excluding the J-11A) and all of its variants(J-15 and J-16) thus far, it would make sense they tested the WS-10 or a upgraded version of it(that people mistook for the WS-10G) on the J-20. Also, in terms of pure aerodynamic performance wise Im not saying the AL-31 could be inferior to the WS-10 but only that the WS-10 seems to have gotten rid of the problem of the excess smoke out of the nozzles(which is deadly when going up against a fighter like the F-22 with highly advanced IRST).
Don't get me wrong and Your post makes perfectly sense ... However I simply question IF there was such an improved WS-10G already tested. That does not exclude this option but if we haven't seen it yet.
All images so far - at least IMO - are clearly showing some sort of AL-31FN and have no, not even a single hint - for a WS-10.
Deino
All images so far - at least IMO - are clearly showing some sort of AL-31FN and have no, not even a single hint - for a WS-10.
Deino
Oh, then the Chinese are probably using the AL-31FNIII series engine to power the prototypes. We can then conclude that the Chinese have done some modifications to the engine itself to solve the problem of the excess smoke. Ironically, this modification actually makes the AL-31FNIII better suited as an engine for a stealth fighter than the vaunted AL-41 which so far has resulted in the PAKFA being vulnerable to Western IRSTs at the expense of reduced thrust. This is actually a pretty good trade off as it sacrifices a relatively small reduction in maximum speed( Mach 2.1 for the J-20 vs Mach 2.3 for the PAKFA[correct me if my specifications are wrong here]), for a the elimination of a potentially fatal flaw in the exhaust system when going up against Western fighters.Although, Im not sure what this entails for the T/W ratio and overall agility. This of course explains why the Chinese rejected the Russian offer for the AL-41 back in 2012 as they may have been aware of this defect in the Russian engine and sought to modify their existing stock of upgraded Al-31FNIIIs.
Quickie
Colonel
I based my guess by estimating the probable turn rate of the J-20 in the video. It looks to me a very tight and quick turn (5 secs?) indeed , probably much more than 6 g.
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It is no doubt a very quick turn quickie, and I won't disagree or argue with you bro, you have exercised some deduction here, where-as the old Brat is just hangar flying???
However, I do not think they are anywhere near the max g limit of the pilot? Those Raptor boys pull some very serious G, this bird doesn't seem to be in the nether zone??
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all jet engines smoke, these newer engines are much more efficient and cleaner, but at low altitudes they all are running rich, why they called the old low level high speed military corridors, "oil burner routes". So a lot depends on the power settings and the fuel controllers mixture settings. The sky is also very hazy and that may mask some smoke???
well, they need to develop some new flight suit to allow pilot to really push the flight envelopes. But it's not easy to keep pushing and clearly the human body has a limit.
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