A da li je taj novi AL41F1A ili potpuno novi motor? 

Потпуно нови.

Da nasao sam nesto zovu ga Objekat 129 i valjda ce do 2015 biti u PakFa..

Vest od 10. augusta 2012, mozda nije nista novo, ali ipak, nek se nadje.
 Rusi na trecem prototipu Su-T50 (oznaka 53) testiraju novi AESA radar za svoje i indijsko ratno vazduhoplovstvo. U 2012 se ocekuje da se pridruzi i cetvrti prototip Su-T50 (oznaka 54 ?).

Orig. tekst:
 "Sukhoi" has started testing the fighter T-50 (PAK FA) with a new on-board radar system with an active phased array, said in a statement received by the Editor "Lenty.ru." The new radar is installed on the third prototype of the future fighter T-50-3. In the first ground and flight tests were checked in the modes of the radar features "air-to-air" and "air-surface". In parallel testing of optical channels.

Radar PAK FA being developed by the Research Institute of Instrument name Tikhomirov. According to the "Sukhoi", a radar with electronic beam control is made on the basis of the Russian element nanoheterostructures. The system will allow the PAK FA to recognize and classify the group and single target at long range, and at the same time pointing to arms for a few of them. In addition, on-board system will provide communications and electronic countermeasures.

In February 2012 it was reported that the PAK FA prototype made a total of more than 120 flights. The third prototype of the aircraft involved in the flight test program in November 2011. It is expected that during 2012 the program will connect, and the fourth prototype of the T-50-4. The first prototype aircraft flies from January 2010 and the second - in March 2011.

izvor:
http://asian-defence-news.blogspot.com/2012/08/pak-fa-prototype-tests-aesa-radar-for.html

Sjajne fotke Aleksa   ali, cek,cek, sta su mu ovi crni prstenovi   Ovo je drugi prototip... da nije taj novi radar i  njemu montiran, a ovo su fotke koje to i pokazuju

Kad je izled u pitanju apsolutni pobednik , budućnost kod maketara mu je zagarantovana za ostalo pokazaće vrijeme!

Da Aleksa, sta predstavljaju ovi prstenovi?

Ja sam sklon poverovati da su time oznacili nesto - mozda upravo da testiraju taj radar, ali ko zna. Ne provaljujem da li je to samo obojadisano ili nesto drugo???

Evo nekih vesti (od 31. augusta) o raznim testovima.
Izvor:
http://www.ainonline.com/aviation-news/ain-defense-perspective/2012-08-31/sukhoi-t-50-moves-radar-flight-refueling-tests

evo teksta - mozda neki testovi vrseni na drugom prototipi (crvena slova) imaju veze sa ovim oznacavanjem prstenovima (?):

"Sukhoi T-50 Moves to Radar, In-flight Refueling Tests
AIN Defense Perspective » August 31, 2012

by  Vladimir Karnozov

PAK FA
The second prototype of the T-50 stealth fighter lands at Zhukovsky after its display at the recent Russian air force 100th anniversary airshow. (Photo: Vladimir Karnozov)
August 31, 2012, 10:05 AM

The third prototype of Russia’s new T-50 stealth fighter now has an AESA radar. Sukhoi reported this month that the program has logged more than 120 test flights, which suggests that only some 20 flights have been made in the past nine months. However, Russian air force commander Gen. Victor Bondarev told journalists that testing of the PAK FA (the Russian acronym for Future Complex of Frontal Aviation) is on schedule, and that performance to date is “by and large corresponding to the specification that we put forward for this aircraft.” The T-50 first flew on Jan. 29, 2010.

Sukhoi said that the second prototype (side number 52) conducted initial inflight refueling trials, in conjunction with a Russian air force Il-78 tanker and an Su-25UB two-seat chase plane. The T-50 hooked up with the tanker five times. Sukhoi said that this prototype is also being used on a separate test program examining stability, controllability and the structural response of the design in various flight configurations and various corners of the flight envelope, including supersonic.

Meanwhile, the first prototype (side number 51) is “completing preparations” for testing at high angles of attack and for super maneuverability.

Side number 53 is fitted with the AESA designed and built by the Scientific Research Institute of Instruments named after Tikhomirov (NIIP). The maker claims “considerable progress” in early ground and flight tests. The radar “corresponds to the best systems available elsewhere,” it said. NIIP also noted that tests of the PAK FA’s electro-optical sensor system have started.

NIIP unveiled a full-scale prototype of the AESA radar for the PAK FA at the Moscow Airshow (MAKS) in 2009. This unit uses locally produced components, including solid-state transceivers, based on “nanohetero structures.” It is built on module principles and with other applications in mind, including aircraft that are already in service and anti-aircraft defense systems. The technologies employed in the new radar permit an increase in target detection ranges, and enable simultaneous operations in both air-to-air and air-to-surface modes, including recognition and classification of detected targets. These technologies also permit engagement of several targets simultaneously, using precision guidance munitions, NIIP says. The radar has integrated capabilities for secure communications and electronic countermeasures.

Speaking at the recent Russian Air Force 100th Anniversary airshow, Gen. Bondarev said that a total of 14 T-50 prototypes will be assembled. The fourth example will fly shortly, he added. Evaluation of the prototypes at Russian air force bases will start next year, to be followed by delivery of production aircraft in 2015. Bondarev further stated that Russia’s Weapons Program 2011-2020 calls for the acquisition of a combined total of 250 Su-34, Su-35 and T-50 tactical fighters."