Sukhoi Su-27 pre-projects, projects & prototypes

For what purpose?

The book you need is this:

"Su-27 Fighter: Beginning of Story" by Ildar Bedretdinov et al.

It has full details and drawings of every variant studied up to the T-10 prototype in exhaustive detail. The second volume (not out in English yet) covers the rest of the story.
 
Hi,


from the book; Sukhoi Su-27 Flanker,by Yefim Gordon and Peter Davison.


The Sukhoi early T-10 configurations.
 

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From Russian magazine;

Авиация и космонавтика 2013-1
Авиация и космонавтика 2013-2
Авиация и космонавтика 2013-3
 

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And;
 

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Also from Авиация и космонавтика 2013-4 & Авиация и космонавтика 2013-5.
 

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T10-6 looks pretty interesting considering what Sukhoi supposedly thought about the North American FX entry. (That it was better than McDonnell Douglas' F-15.)
 
sferrin said:
T10-6 looks pretty interesting considering what Sukhoi supposedly thought about the North American FX entry. (That it was better than McDonnell Douglas' F-15.)

I agree with you my dear Sferrin.
 
From Авиация и космонавтика 2013-6 & Авиация и космонавтика 2013-7 .
 

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Also from Авиация и космонавтика 2013-9.
 

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Thanks for all the illustrations of the various studies. Amusing to watch how Sukhoi engineers struggled to keep the aft fuselage shallow between two massive engine nacelles.
 
sferrin said:
T10-6 looks pretty interesting considering what Sukhoi supposedly thought about the North American FX entry. (That it was better than McDonnell Douglas' F-15.)

Very interesting to hear sferrin!
Could you be so kind as to refer me where I can find/read Sukhoi's comment/analysis re the NAA 'FX' design?
As a fan of the Fairchild-Republic FX design submission, I would liked to have gotten his opinion/take on this design!

Regards
Pioneer
 
There is a brief mention in Oleg Samolovich's memoirs "Next To Sukhoi" (only published in Russian) where he says that, apparently, when McDonnell-Douglas 199 won the F-X contest over "Northrop" (I assume he meant "North American") Sukhoi was heartened as it meant they had a chance to beat the US, implying they felt the other design was better, and it was certainly more simllar to the early Su-27.
 
PaulMM (Overscan) said:
There is a brief mention in Oleg Samolovich's memoirs "Next To Sukhoi" (only published in Russian) where he says that, apparently, when McDonnell-Douglas 199 won the F-X contest over "Northrop" (I assume he meant "North American") Sukhoi was heartened as it meant they had a chance to beat the US, implying they felt the other design was better, and it was certainly more simllar to the early Su-27.

Nice Info my dear Paul.
 
hesham said:
In my files,

there is a version to Su-27 at the end of the 1980s,had a vectored thrust nozzle,does
anyone hear about it before ?.

Here is the Aircraft which I meant.

Су-27.История истребителя (1999)
 

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From the same source;

Су-27.История истребителя (1999)
 

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http://www.secretprojects.co.uk/forum/index.php/topic,13938.0.html
 
flateric said:
http://www.secretprojects.co.uk/forum/index.php/topic,13938.0.html

Thank you my dear Flateric,but no one answered me at first.
 
What is this? Alternative Su-34 design or Fake?
 

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Carrier version Su-27?
http://www.secretprojects.co.uk/forum/index.php?action=dlattach;topic=5702.0;attach=61971;image
http://www.secretprojects.co.uk/forum/index.php?action=dlattach;topic=5702.0;attach=61973;image

http://www.paralay.com/su33.html
 

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EYe2m7EXgAAtD8k


This is the mockup. It says so in the caption :)
 

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Hi!
 

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Hi!
I think that T-10/1 and T-10-1 are different.
It's difficult to add name T-10/1, T-10/2 to the picture file.
 

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Hi! I want to ask these questions.
 

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Hi! I want to ask these questions.
If I had to guess, it seems to be some sort of internal missile stowage (two per side) and two twin-barreled aircraft canons (GSh-23?).
The missile appears to be on some sort of pop-out mount, and their profile and planform views seem to match whatever is on the wings in that drawing. Though I don't know what sort of missile would be that small at that time (compare with the relative sizes of R-60 on the 10/8 design and its gun), unless they were either very short ranged or dumbfire.
Dumbfire might support the idea that the angle callout on the gun wasn't to describe some sort of maintenance but angling for attacking bombers. However this doesn't quite fit well with me, seeing as the aircraft, at least as built, doesn't seem like something made to go after high-flying US bombers. The guns may be angle to reduce the necessary lead, and the missiles may also be some sort of device for very close-in engagements. The section which folds out from the underside may be there to easy loading of ammunition and servicing of the gun.
But it's easy to see the problems with this: firing a gun at a significant angle against the wind usually results in large dispersion and might even cause tumbling (not to mention may not be necessary given the already quite notable angles of attack this aircraft is known to achieve). A dedicated internal, telescoping mount for a single weapon system adds a lot of weight for something that could probably just be chucked onto an underwing pylon (or better yet, just replace them with a larger missile that could engage at greater ranges and carry a larger, more lethal warhead). This is probably why we only see this on a single design, before the others revert back to a single offset cannon and wing- or body-mounted missiles.
 
Hi! I want to ask these questions.
It might be the PPU-27 moving gun installation.
PPU-27 - moving gun installation in the same layout volume as the VPU-687, with the gun being steerable through +5 ° in the horizontal plane and 0-15° in the vertical plane, upwards from the axis of the aircraft, with an ammunition load of 150 cartridges.

DEVELOPMENT OF SU
Part of the tests between the VPU-687 – built-in fixed gun installation or a flexible mount based on theoretical studies that showed great benefits to such a system in dogfights.

In the end aerodynamic concerns and the lack of space for suitable servo motors had the idea shelved.
 
Hi everyone! Any help?
For what purpose?

The book you need is this:

"Su-27 Fighter: Beginning of Story" by Ildar Bedretdinov et al.

It has full details and drawings of every variant studied up to the T-10 prototype in exhaustive detail. The second volume (not out in English yet) covers the rest of the story.
There is an English version of 'Su-27 Fighter... '

by designers and constructors of the aircraft. It is possible to buy and it is cheaper thant the Gordon's book and has more details!
 
Like I said the first volume was released in English. It isn''t easy to get hold of though. I only have a copy thanks to @flateric :)
 

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