J-20... The New Generation Fighter III
- Thread starter siegecrossbow
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I think China has hypersonic wind tunnels that can go above Mach 3, but probably nothing of the scale that can test the full sized J-20 before.
Apparently for very high speeds they test it in bursts of air rather than continuous flow.
MiG-29
Banned Idiot
that would be interesting since it seems T-50 will have a F-22 flat nozzles in later batches with a 17 tonnes engine class type 129, only prototypes and early batches will have round nozzles
"Изделие 129" - рабочее название этого двигателя - еще совершенствуется, у него должно быть плоское сопло для меньшей заметности радарами противника
leaving J-20 as the only fighter with round nozzles among the three
Двигатель второго этапа - "Изделие 129" - будет устанавливаться на более поздние партии ПАК ФА. О новой силовой установке пока известно не много. Ранее сообщалось, что "Изделие 129" будет отличаться от АЛ-41Ф1 увеличенной тягой, а также более высокой топливной эффективностью. Предположительно, двигатель второго этапа сможет развивать тягу в 107 килоньютонов в крейсерском режиме полета и в 176 килоньютонов в режиме форсажа. Кроме того, вероятно, будет значительно увеличен межремонтный ресурс.
[video=youtube;NwkAq1D4W38]http://www.youtube.com/watch?v=NwkAq1D4W38[/video]
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AssassinsMace
Lieutenant General
You forget the F-35.
The T-50 is going to need them.
The T-50 is going to need them.
MiG-29
Banned Idiot
to be honest, i think if the J-20 gets engines in the 17 tonnes class as PAKFA will, they will revert to flat nozzles.
Russia will do it the early prototypes of T-50 all are going to have round nozzles, even the first batches Russia will recieve in 2015, but later on late batches will have flat nozzles.
Looking at J-20 i do not think China has the engine to power even now J-10s and J-11s, and let alone the J-20, proof is they are still buying Al-31s and Ukranian engines for L-15.
But i think once 129 is available 117 will be available for China so Chengdu said to saturn sell us the engine of Su-35, so i do not think China is ahead on WS-15 as especulated and even ahead of Russia, PAKFA has now 3 flying prototypes, but we are not seeing the definitive PAKFA, that will be available by 2017 i think
Apparently WS-15 development is doing quite well, and that's from concentrated investment into these high end engines compared to smaller thrust engines like ones which are meant to power the L-15. The continuing Al-31 purchases mean nothing wrt WS-15 development, if that is what you imply because that is because WS-10's production can't keep up with airframe production (as well a to replace old Al-31s).
As for nozzles, who knows -- we're all hearing that J-20 will have 3D, but we know the chinese have looked into 2D before and there's no reason future J-20 upgrades or batches cannot have 2D if they deem it necessary.
I'm more interested in whether WS-15 will actually be able to give the 17-18 tons of thrust we've been hearing about. Time will tell I suppose.
As for nozzles, who knows -- we're all hearing that J-20 will have 3D, but we know the chinese have looked into 2D before and there's no reason future J-20 upgrades or batches cannot have 2D if they deem it necessary.
I'm more interested in whether WS-15 will actually be able to give the 17-18 tons of thrust we've been hearing about. Time will tell I suppose.
Thats a huge pile of speculation.
About flat noozles, im not sure that T-50 can get them without a major redesign of the plane. Besides, the engines are not integrated with the fuselage. I dont think that it would gain that much stealth. And it would lose the 3d noozles. Thats why i doubt that T-50 will get flat nozzles.
Really? any news of it? Has the engine been flown yet or it is still in the lab ?
I don't think it's flown yet -- that would be huge news. Just following, like tphuang's blog and other credible posters the sound is that WS-15's progress is pretty solid.
Fu Wen Shi
New Member
Stupid GEMA.
I cant watch this and the last j-20 flight test video because of them bzw. the not licensed music.
Oh well.
I cant watch this and the last j-20 flight test video because of them bzw. the not licensed music.
Oh well.
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