This is simply not true.

Historically there have been great discussions between engineering and design teams for way lower tolerances and margins.

These things are designed for very small tolerances, shapes and structures are designed to maximize the performance, weight, etc..

This is one of the big challenges for modern industry, 5% out of the margin, and things go wrong in cascade, because the whole thing was designed from the start countintg that such 5% was something that would never happened…

This is one of the reasons I chuckle (and sure many people in this board do) when kiddies start with the speech of super tolerances, laser stuff, uber computer assisted design, etc, etc, etc..thinking this is an intrinsic superiority feature.

How about a pic of a YF-23 that hadn’t been sitting out in the weather for 2 decades, if we’re interested in intellectual honesty.

With or without weather, these rivets will be seen.

You are brainwashed with all that garbage of super tolerances and uber stealthy rivets, what can i say? is hilarious

vs. a painted YF-23

Is a picture, please, check some pictures of the SU-34, you will see them , some show very ‘smooth’ surfaces, others show how the real deal is.

Then again, there are professional pictures, and there are the real ones..

I have approached calculation to known data:

Your methology is completelly wrong, wonder if you understand this…

Why is this so hard to ackowledge

I’m kust asking if there is another example for this, at least for modern jets programs, i doubt it, somehow.

And because i don’t think russians are mages 😉

For the 22 everything is ‘classified’, because is a big disappointment..all the classified standards are based on ‘may’, ‘could’, ‘should’….this example is clear…35klb is the normal operating range and the comparable data, but it must be more, and this must be classified..then comes the 40-45 klb tales, which are probably ground static tests with tunned engines.. if these figurers are not made up.

But no, this can’t be true, the real power must be classified

Anyway , this is a pakfa thread, not a 22/35 thread

That’s the upper-end of the RuAF requirement (for the stage 2 engine).
So it’s official for the 2-D nozzle. :diablo:

From the patent application:

Author(s)…

Chepkin, Victor Mikhailevich- Chief Designer of the original AL-41F :cool:.

Description (via GTrans)

Check that nobody is saying this thing will decrease the IR signature.

This nozzle is required for the reverse thrusting, now i can understand why this thing does have that gap behind the TVC’s plates.

And another thing, remember it was stated by the Soyus/Salyut representatives the flat nozzle, hiding the exhaust (which would require a very low aspect shape, unlike the 22’s one) was something required just for ’10 minutes’ or so, of the flight enveloped, suggesting something that could be turned from circular shape to flatted shape, suggesting (IMO) the implementation of independent feather control, something like the Eurofighter TVC research, but a step ahead.

Now here comes the big trouble

If the russian air force really want the reverse thrust, then will be hard to accomplish this with the conventional exhaust layout, because a solid plate/feather is needed, and the circular exhaust composed by many small feathers can’t strangle the exhaust flow and will be too weak to resist the loads.

Depends on what the Ruaf need, a patent does not mean will be the final design, just means this configuration was studied

Do you know the purpose of X-35A/B/C was to demonstrate flying qualities and they had no RCS treatments? RCS was assessed by both Boeing and Lockheed using pole models on their respective radar ranges.

Showing the stealth factor was pretty secondary when was about to select the winner, as was with the ATF program.

******

On the topic, there are 2 kind of pictures, the professional ones (on magazines and publishings)…and the real ones..

Or maybe it just shows that the two countries have different standards in safety (hint: Sukhoi have already lost a Su-35 in testing).

Seriously this statement is beyond stupid, ‘these dumb russians doing crazy things again’ ah yes..

Prototypes are lost , is not like such thing only happens to the riskier ones..a prototype is a time bomb ready to explode, every prototype is like this.