And what’s with the 28 deg sust rate??

WoW !!!

Is there anything this magical plane cannot do? Can it cook? Can it walk the dog? Can it make coffee?

I think everyone -including Russia- should give up and order some of them planes now!

I think that:
-J-20 is not almost as agile as the J-10 given that has same configuration.
-Combat between stealth plane wouldn’t be limited to pure dogfight. Certainly, radar detection range would be limited and “blurry” but it would suffice to use ARH missiles.
-someone that say that it’s not possible to obtain precise range figure from IRST knows nothing about laser ranging, about image data comparison and above all how active radar homing missile work and so cannot be a credible source.

And how would the ARH missile (with its tiny radar) lock on to a VLO target?

I didnot paid attention to it before , but it appear that PAK-FA will have rear vision , just like F-35 series

?????

My general point is more about the suitability in this day and age of massive bombs, fire weapons and the like in built up areas known by the whole world to be populated by civilians.

In this instance I am questioning the morality behind the governments of Russia and Syria attacking a sector of the city of Aleppo in this way. It does not mean the levelling of Fallujah is right, but nor does that mean Russia and Syria should employ such devastating tactics against civilians.

In a previous (very old now) post, I advocated carpet bombing to get rid of ISIS once and for all. ISIS is not an organized military. Using precision guided weapons does nothing to them. You need to kill every single last one of them.

Actually bombing is not so intimidating now, as it will take longer. They know where they are. US & Russia should support Syrian Army regulars, going house to house and killing them out of the major cities. But they won’t do that, will they.

No they have not been debunked. Also you need to separate CG and artwork from actual real things.
You posted an old drawing from portugal

this is the real thing. it is pretty straight

[ATTACH=CONFIG][/ATTACH]

We all have various questions regarding the design of the T-50. I think however it is more important for Russia to show that it has the industrial stamina to complete this project first. Then when it reaches operational capability we can debate how good or bad it is.

Exactly. Upgrade radar (AESA or PESA), modernize engines and its PSU, replace OLS system, add sensors for sensor fusion, digital cockpit, glass cockpit, FLIR pod, etc. Would do wonders for the jet and be financially effective. Do that and you can have ~200 Su-27’s more than capable for future defense of the nation, also gives additional time for Russia to spread out procurement thus save money.

All these you mentioned are 70% of the total value of a fighter! These are the most expensive bits, not the airframe!

It depends.. In France, the F1s were quickly shifted to A-G work once the 2000 came in.. But hardly any other user went for a replacement in the interceptor role that early..

Ecuador – F1JA in 1979 – replaced by Cheetah C in 2011
Morocco – F1CH/EH in 1978 – replaced by F-16C B52 in 2013
South Africa – F1AZ/CZ in 1975 – replaced by Cheetah C in 1993
Spain – C.14A/C in 1975 – replaced by EF-18A in 1985
Kuwait – F1CK/CK-2 in 1976 – replaced by F/A-18C in 1991
Greece – F1CG in 1975 – replaced by Mirage 2000EG in 1988
Qatar – F1CK in 1977 – replaced by Mirage 2000-5 in 1997

Greeks kept the F1s. In interceptor service until 2003 !