Russian Sukhoi PAK FA fighter jet


Pravda Report


Published on Apr 10, 2013

The Sukhoi PAK FA (literally "Prospective Airborne Complex of Frontline Aviation") is a twin-engine jet fighter being developed by Sukhoi for the Russian Air Force. The Sukhoi T-50 is the prototype for PAK FA. The PAK FA is one of only a handful of stealth jet programs worldwide.
The PAK FA, a fifth generation jet fighter, is intended to be the successor to the MiG-29 and Su-27 in the Russian inventory and serve as the basis of the Sukhoi/HAL FGFA being developed with India. The T-50 prototype performed its first flight 29 January 2010. By 31 August 2010, it had made 17 flights and by mid-November, 40 in total. The second T-50 was to start its flight test by the end of 2010, but this was delayed until March 2011.
The Russian Defence Ministry will purchase the first 10 evaluation example aircraft after 2012 and then 60 production standard aircraft after 2016. The first batch of fighters will be delivered with current technology engines. The PAK-FA is expected to have a service life of about 30--35 years.

Although most information about the PAK FA is classified, sources within in the Russian Air Force and Defense Ministry have openly stated that it features stealth technology and has the capability to supercruise, and incorporate advanced avionics such as an Active Electronically Scanned Array (AESA) radar and an artificial intelligence system. It is to be outfitted with the next generation of air-to-air, air-to-surface, and air-to-ship missiles.
The T-50 has a blended wing-body design and incorporates all-moving vertical stabilizers and horizontal elevators. The aircraft has wing leading-edge devices above the jet engine (LEVCONs) designed to control vortices generated by the leading edge for improved behaviour at high AOA. The two engines incorporate 2D thrust vectoring nozzles canted at an angle, similar to the configuration on the Su-35S. Differential actuation of these nozzles can produce a rolling and yawing moment. The aircraft inlet incorporates variable intake ramps for increased supersonic engine efficiency and retractable mesh screens to prevent foreign object debris from being ingested into the engines.
Composites are used extensively on the T-50 and comprise 25% of its weight and almost 70% of the outer surface. Weapons are housed in two tandem missile bays, each estimated to be between 4.6-4.7 m long. The main bays are augmented by bulged, triangular-section bays at the wing root.

A fifth-generation jet fighter is a fighter aircraft classification used in the United States and elsewhere encompassing the most advanced generation of fighter aircraft as of 2013. Fifth-generation aircraft are designed to incorporate numerous technological advances over the fourth generation jet fighter. The exact characteristics of fifth generation jet fighters are controversial and vague, with Lockheed Martin defining them as having all-aspect stealth even when armed, Low Probability of Intercept Radar (LPIR), high-performance air frames, advanced avionics features, and highly integrated computer systems capable of networking with other elements within the theatre of war for situational awareness. The only currently combat-ready fifth-generation fighters, the Lockheed Martin F-22 Raptors, entered service with the U.S. Air Force in 2005

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