Gomig-21
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I thought it will be like this but seems I was wrong.
View attachment 762702
Well, I'm sure many were wrong and at least you gave it a shot. That's more than many can say.
Since these pics have come out, a lot of prognosticating going on and many have pretty much narrowed down what this aircraft will look like when the covers come off, since they seem to pretty much hug the body pretty well, it's not terribly difficult to decifer what the shape is behind all that tarping and this rendition is probably the most accurate of all that have been flying out there since those pics came out.
One other thing - if you take the size of the aircraft compared to the fella walking next to it, this thing is BIG! This is not some small, single-engine aircraft like the F-16 or even the F-35. The latter is probably a quarter of the size smaller than this thing.
It also begs the question if they just used a single Al-41 from the Su-57 or they built a whole new engine just for this aircraft? Given the size of the AC and the single engine, it's probably going to be the AL-41F1, or is the Izdeliye 30 ready or eventually going to be the designated single engine for this fighter? The size means it needs a lot of power for a single engine, so we'll have to keep an eye on that and see what they end up using.
Sukhoi develops single-engine stealth fighter
According to the sketchy information provided so far, the new aircraft shall reach speeds exceeding Mach 2 at high altitudes and, typically for a Sukhoi, shall feature super-maneuverable characteristics by using a 3D TVC equipped power plant enabling to achieve the thrust-to-weight ratio exceeding 1.0.
Just recently, a photo from the office of Yuri Borisov, the Deputy Prime Minister of the Russian Federation, shows a model of an unknown fighter, remotely resembling a product of mating the Su-57 with Boeing’s JSF concept, the X-32, featuring a large air intake under the nose of the aircraft. Whether this model has any connection to the future Sukhoi’s fighter, remains to be seen.
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Sukhoi develops single-engine stealth fighter
Sukhoi develops single-engine stealth fighter The Sukhoi company, part of the United Aircraft Corporation (UAC) of the Rostec State Corporation, is developing the first Russian sin...scramble.nl
So speeds exceeding Mach 2 and a thrust to weight ratio of greater than 1.0 AND thrust vectoring with a single engine? That seems like a lot for any of the current engines in Russian inventory that we know about. Like I mentioned to @vostok , it will be very interesting to see what the power plant is or will be for this rather large aircraft to achieve all of that with a single engine. Also, we've never seen a single engine thrust vector working on any Russian aircraft. It's always been with dual engines even when they tested it with the MiG-29. So that will be fascinating to see what they have in store for that.