Ultra low-resolution, testing stand:

Interesting radome is juuuust about discernible though.

Just a nice shot:

There is nothing that suggests that Yak-130 #134 (or any other individual) ever had an IFR probe of any kind fitted. There are loads of high-resolution photos of the forward section of the Yak-130, and there’s nothing there.

#134 is a testbed flying for Yakovlev, and not an in-service jet anyway. It was most likely just a display.

The Yak-130’s very close brother (basically just a 1990’s Yak, with the wing root fences that RA-43130 sported for a while, but without the forward chine) Macchi M-346 occasionally sported IFR probes even at the early prototyping stage:

Given the history of these two craft, if that was considered for the M-346 at that stage in development then there are most likely provisions for that kind of plumbing on the Yak-130 as well.

Still, there isn’t any proof of this. Just that one 2015 (?) photo of the MiG with the buddy-refueling hose hanging out just in front of a Yak, but you can’t make out anything else, and there’s no other material anywhere even hinting at it.

First pre-serial (?) Mi-38T test flight, on a very windy winter’s day in Kazan:

Great! So Zvezda it was.

And the photo-of-a-screen thing seems to be the case too, i.e. some kind of monitor camera footage of the test chamber.

They’re really treating us a lot lately. Hope to see dual 30’s airborne soon.

Where do you see a “fence”? The little gun vent port on the starboard side of the fuselage, you mean?

And no, obviously it’s not “production representative”. It’s T-50-3 for crying out loud, an old aircraft, and it lacks a whole bunch of things seen in the much later prototypes. Such as that little vent port, for example, which has changed appearance time and time again. E.g:

Evidently, T-50-3 is still part of the program though, being used as some kind of testbed, for sensors in this case. Kinda like how T-50-2 is used as an engine testbed (as described earlier).

Saturn 30 always had an F135-style serrated nozzle.

This T-50LL (again, formerly T-50-2) was re-engined with a spanking new Saturn 30 in the port nacelle about a year ago, while it kept the usual Saturn 117 (AL-41F1, the engine used on all T-50 prototypes) in the starboard one.

At that point it was re-named “LL” which is short for “flying laboratory” in Russian (compare it to the Il-76LL, out of which there are three or something, which have flown with all kinds of new engines for testing, most recently the PD-14).

Anyway, as can be seen in the above screen capture, the starboard nacelle which previously had the “legacy” 117 is now empty, while the 30 is still fitted. So I wonder if they’re gonna finally start flying a dual 30 plane, now. Mind you, the final production version of the Su-57 is supposed to have two 30’s, but it’s still pretty early in testing.

They have two installations capable of taking her in, but the most suitable one, the PD-41 floating dock (which has similar specs as this PD-50 one) is all the way over in the Far East of Russia, so that’s probably a no-go.

The other option is the dry dock at Sevmash, which is located reasonably close and which previously fit the Vikramaditya with plenty of room to spare (285m, vs Kuznetsov’s 305m), but the entrance to that dock is slightly too narrow for the Kuznetsov at present so some pretty big modifications would have to be done anyway. Plus, the Nakhimov nuclear battlecruiser is occuping a good portion of that dock at the moment.