^
Yes Korea n Indonesia relationship are very good…
we purchase Korean LPD, initial overseas buyer of KT-1B ungbi and our old 209 also being repaired/refitted in Korea too….Korea purchase CN-235 maritime patrol…..
detail on the cooperation… we are only minor partner here

@witcha, you need to study better concerning Asia geopolitic, Korea and Japan are not good friends, Korea still have a grudge concerning Japan attack in WW2 and probably in Hideyoshi era too (speak about good memory :D), economic cut throat competition (both have very similar product, outside Sony Playstation n japanime :D) plus border dispute. India have their own FGFA project.

detail on cooperation I posted here
http://forum.keypublishing.com/showthread.php?t=101011
beside we only minor partner, more nation can join if situation allowing. the more the merrier…..

Commander-in-Chief: PAK FA Will Go into Series Production with Old Engines

The first batch of fifth generation airplanes may reach the troops with an “unrelated” engine, Russian air force CinC, General-Colonel Aleksandr Zelin, has reported.

“At the present time we are putting up the fifth generation airplane on an unrelated engine, that is, not on the one that will be on the series-built example,” Zelin said.

At the same time he expressed hope that by the start of series deliveries the airplane will be equipped with the new engine.

“In any case, if the first batch is with this unrelated engine, then the other batch will be with the new,” Zelin specified, RIA Novosti reports.

We recall that it is planned to begin PAK FA series deliveries to the troops from 2015. The first prototypes of the preproduction batch is supposed to reach the Lipetsk Center for Combat Application and Cross Training of Flight Personnel in 2013. The first fifth generation fighter flight occurred 29 January at the air field of the Komsomol’sk-on-Amur Aviation Production Association which is included in the Sukhoy holding company. The aircraft spent 47 minutes in the air. Russia’s honored test pilot Sergey Bogdan piloted the fighter.

As the newspaper VZGLYAD has reported, in the middle of June, the Russian Federation deputy defense minister for armament, Vladimir Popovkin, reported that the military leadership plans to purchase a minimum of 50 such aircraft before 2016.

Source: 13.07.10, Vzglyad

http://www.royfc.com/acft_news.html

why is this :confused:
why purchased a batch of crappy prototype ? why not simply wait polished, real, 5th gen pak-fa ? 2 years would be enough to finish the engine….

Engine inlet design is a fundamental part of the aircraft. The position of the engines is fixed and has a huge impact on the weight distribution. the inlet size and form is very important to make sure that the engine get use able air during the whole flight regime. A big redesign would mean another prototype.

but they will have to change it sooner or later…the final pak-fa will have completely different engine with different weight distribution etc….
TsAGI is competent and will do the recalculation fast :diablo:

pardon me for asking but PFI? 🙂

Perspektivny Frontovoy Istrebitel 😀

Yes, everyone here is well aware of what LPI is. Hell, I’m sure there are posters that could delve into detailed phase shift keying algorithms, chirplet transforms, pulse compression, etc… LPI is not exclusive to the US and is a well understood radar technology. It’s also not invisible. Just significantly less easy to detect. Why do you think that when the Rafale and the F-22 flew DACT against each other a few months back, it was all WVR, with neither the APG-77 nor SPECTRA engaged? Because the USAF didn’t want to give the French anything to chew on using SPECTRA’s SIGINT capabilities and likewise the French did not want to expose whether or not the APG-77 was detectable by SPECTRA.

not to mention that LPI actually very loose term…and the basic have been researched since WW2. Now since my nation kakap-class FPB-57 already use LPI radar then it the boat will be undetectable by APG-77 :diablo:

I cant wait to see the operational version… it could be very different with current pak-fa 😮
just look @ flanker… the prototype and the final version have different engine position, wing, tail, cockpit etc 😮

I don’t quite get what the huge problem with the supposed T-50’s intake blocker is. From what I know:

– according to some insiders on militaryphotos, the first prototype has no radar blockers installed because engines used are not optimized for that. Sounds pretty sensible to me.. If that i true, then we see a compressor face on the pic. If we do, what is the problem with that? It’s extremely unlikely that it stays that way on series examples so what does it say?
– from past examples like JSF or ATF it’s obvious, that a design equipped with radar blockers can still be considered more stealthy than one equipped with curved ducts. From that point of view we cannot consider any of the solutions as ‘more or less advanced’.

So, again, Kapedani, Otaku and others, what is the problem?

really ? I always think S-duct is the optimal solution since it used on F-22…
also 2nd think, why ppl here says that Russian impossible move T50 engine position as it the same with designing new plane ?
I means, look at flanker, compared with T10 prototype it got new wing, tail and different engine position too IIRC…..

That`s SAFE LIFE vs DAMAGE TOLERANCE, how else to jump from 1500h to 4000h? 😀

wont 30 years make difference ? …