PAK FA news

**andrew** · 19 Feb 10,, 03:12

Many systems for PAK FA have been tested in parallel with the airframe development. For example glass cockpit is installed and tested in the Su-35; the new weapons bay in PAK FA configuration have been tested on the Su-47, an electronic suit and RAM techniques are in development for many years now.
Of course integration of all these components takes time. How much time it will take is anyone’s guess.

**andrew** · 19 Feb 10,, 03:17

The Su-47 with new weapons bay in PAK FA configuration.

**ArtyEngineer** · 19 Feb 10,, 03:30

Originally Posted by andrew

Of course integration of all these components takes time. How much time it will take is anyone’s guess.

And that is exactly my point. WHen you start to pull systems and components developed somewhat seperately together you get what Systems Engineers refer to as "Emergent Properties" Thats techno speak for "Oh Sh!t moments and discoveries". These are what can drag a development program out for some considerable length of time. The more complex the system, the more likely the occurence of these "Emergent Properties" are.

Regards

Arty

**andrew** · 19 Feb 10,, 03:56

For comparison.

**paintgun** · 19 Feb 10,, 10:12

here is a comparison between F-22 timeline and Pak-fa timeline
F-22 timeline based on ArtyEngineer info provided a few pages back
Now before someone shoots me and questions where is that Pak-fa timeline based on, i gathered them from on online sources, if anyone want to crosscheck just do quick google and you will find them in the first few pages
It is not meant to be credible or accurate as it is gathered from online open source information but it should give some picture of Pak-fa development timeline compared to F-22 development timeline

**Dumblebee** · 19 Feb 10,, 22:33

- 1999. The official start of work on the T-50 - Fighter 5th generation (complex aviation combat new generation I-21).
Russian forum on pak fa:
-2010. Upgrading Engine AL-41 FA (145kn) entered on SU35,
new database technology with monolithic alloy, lightweight compressor blades monoblocks. modified internal engine. Full control Real time digital. new cooling system on engine experimental model AL-42 F (already achieved 175/180kn unit) for future PAK FA ¨ total power with twin engine 350/360Kn. Amazing. The tests of reliability and resistance continue.
About Radar AESA Tekhomirov Niip ,the works of testing began since 2008 very good, calendar 2014 Elecronic active radar pak fa will be ready. Data hardware and software based computer system data fusion with the support of Russian aerospace supercomputers for carrying out programs for computerized numerical connection with onboard OS and hardware of PAK FA T50's command system. Helmet sighting shot multiple electronic sensors , the IRST optronics system ,bay ventral/lateral of weapons , decoy launchers .So !
I rather think that the Russians will be ready at the time.

**Jimmy** · 25 Feb 10,, 15:52

It took them 11 years to have a basic airframe. They'll knock out the rest of it in less than 5? You're very optimistic.

**scorefour** · 01 Mar 10,, 05:37

Anyone catch the news release the other day about the US defense roadmap? It talked about significant upgrades to the F-22 over the next 10 years, including side view radar cheeks.

Also, it mentioned that studies to identify 6th gen fighter requirements have been underway for a few years now and that a 6th gen fighter program will likely be launched in the 2020-25 timeframe.

Anybody have any info on what other upgrades are coming for the F-22?

**Zinja** · 01 Mar 10,, 12:52

Originally Posted by scorefour

Anyone catch the news release the other day about the US defense roadmap? It talked about significant upgrades to the F-22 over the next 10 years, including side view radar cheeks.

Also, it mentioned that studies to identify 6th gen fighter requirements have been underway for a few years now and that a 6th gen fighter program will likely be launched in the 2020-25 timeframe.

Anybody have any info on what other upgrades are coming for the F-22?

Wiki does say a couple of things under 'Upgrades' but nothing about side view radar cheeks. Im interested on your said US defense roadmap program, what it its source?

Im glade to hear that there is already an active program for a 6th gen fighter in keeping with US doctrine.

**cr9527** · 01 Mar 10,, 16:06

Originally Posted by Zinja

Wiki does say a couple of things under 'Upgrades' but nothing about side view radar cheeks. Im interested on your said US defense roadmap program, what it its source?

Im glade to hear that there is already an active program for a 6th gen fighter in keeping with US doctrine.

F-22 Raptor

The Block 30 configuration, planned for 2008-2011, extends the growth seen in the Block 20. Side-looking radar arrays provide a significant ISR capability in the aircraft along with enhancements to provide full Wild Weasel air defence suppression and time-critical target engagement capabilities. A Satcom terminal will provide continuous network connectivity during deep-strike profiles.

**Zinja** · 01 Mar 10,, 18:00

Originally Posted by cr9527

F-22 Raptor

Thanks 9527, much appreciated!

**andrew** · 03 Mar 10,, 04:32

Looking on this pic it’s obvious that the ducts are curved.

**xinhui** · 04 Mar 10,, 01:03

The man is here

**xinhui** · 04 Mar 10,, 01:04

...........

**highsea** · 04 Mar 10,, 01:39

Originally Posted by andrew

Looking on this pic it’s obvious that the ducts are curved.

I guess you have x-ray vision.

Funny, the defpro analysis that paintgun posted in post #239 agrees with me:

The tight shape of the engine nacelles and the position of the ventral “venetian blind” auxiliary intakes seem to suggest that the PAK FA does not feature a serpentine air duct to the engine compressors, as typically adopted for low-RCS aircraft. It is possible that the Sukhoi designers have preferred to limit the compressors’ strong radar reflection by inserting a grill in front of them, while optimising the air intakes for higher max. speed and supercruise performance.

Show me a hi-res inside pic of the inlet, and maybe you'll convince me. There is nothing on the outside that suggests serpentine inlets- in fact, the shape of the nacelles makes it pretty evident that it doesn't use them.

This doesn't mean it's wide open, there are ways to mask the compressors- the Super Hornet and X-32 used vane blockers for that purpose.

It's just an observation. Don't take it personally, and don't belabor the point with pictures that don't support your argument.

You are free to make all the speculations you wish, but it just speculation unless you provide some evidence. Body blending around the engine bays is not evidence.