Honestly cannot tell, looks identical to me. Actually maybe inside of nozzle looks different? Although if that’s from one being semi closed vs the other being fully open… who knows
Compare to 1995 photo
Right one is AL-41, I’m pretty sure, left engine looks identical to 1995 photo
TVC on Su-35 is 2d but V-shaped, just like on Su-30SM
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You literally can see on a video I posted above that Su-35 nozzles can move horizontally, Su-30SM can’t do that
Video literally shows that they move in one axis, just tilted
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It looks like that because of the fish eye lense
If you look at the rudders, you are able to see that those aren’t moving when the nozzles are moving “outward”
Here is the default position.
Here is fully tilted in Yaw axis position.
Rudders don’t move in both positions
You can see it go in vertical axis…
Which also results in yaw movement too.
yes, but can you say that it was moved like that because of the limitations of nozzles or because it was set this way by FCS?
I apologize for asking this question so suddenly. Why were the Flanker series aircraft designed to be so large? Was it because of their weapon load?
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You want long detailed as hell answer or short answer lol, I’ll post a translated section on the su27 series book if you want long answer. Also no need to apologize for asking a question we all here to learn
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Anything you feel like answering is fine.
I’m a complete amateur, so I can only play the role of an audience member seated in the theater. I’m grateful for any answer you give :)
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According to Су-27. История истребителя (history of fighter) the large size of the Flanker series was due to:
• Fuel capacity and range: one requirement was to intercept American bombers and escorts at great distances over the USSR’s territory. This required a very large internal fuel capacity, which in turn needs a bigger fuselage.
• Integrated structure: The central fuselage was designed as one with the wing center section, housing main fuel tanks and landing gear bays. This made to the size of the midsection of the plane
• Aerodynamics: The blended wing fuselage layout allowed the Su-27 to achieve low wing loading despite its size, which gave good maneuverability but also contributes to its size (it’s why it looks like a flying wing)
• Systems and weapons volume: The aircraft had to carry a large, powerful radar (N001/N011 family), OLS IRST, and a heavy air-to-air missile load (10+ missiles).
So yeah pretty simple reasons really
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Another little trivia is ability to work in harsh weather conditions and from pretty much any airfield. Bigger size and weight increase stability and larger wing allows for more lift for shorter take offs and lower landing speeds.
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The only difference I could spot is the way in which the final stretch of the nozzle (turkey feathers if you will) fits into its assemble. Some retract more smoothly, while others leave a visible gap when fully expanded. I don’t know which engine is which, but that’s the only thing I could spot
Pics with circled differences
It only look like that when the nozzle has move from it “center”.
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yea, here’s a shot with both closed. I think left engine is different, much less wear than the right one
Spoiler
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I think i can see why some sources mightve called al31fp on su37 al37…
look at this
we KNOW su27m1/su-35 used al31f
but they just used number of plane in the name (su35)
I think thats what happened with su37
what probably happened is that it had al31fp but some media (incl pilots) called it al37 due to the name of plane (su37)
@GitGood @Temeraire what u think?
later platcard of the SAME plane has different engine name(al31). I think this confirms al37 was just misname of al 31fp
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also why is every plane limited to only 1400 kph at sea level - su-27, mig 23, su35 now too, the manual for su27 says it can fly indefinitely at that speed so it definitely isnt thrust issue, ig air frame isnt strong enough to sustained flight past it
Yes, that’s why I circled where to look. The one in the background in the 2nd picture looks like it leaves a gap between the nozzle and its assembly, unlike the other two pics
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