Sukhoi PAK FA

PAK FA (T-50)
A T-50 flies at the MAKS 2011 air show
Role	Stealth Air superiority fighter
National origin	Russia
Design group	Sukhoi
Built by	KnAAPO, NAPO
First flight	29 January 2010
Introduction	2018 (planned)
Status	Final flight testing/pre-production
Primary users	Russian Air Force Russian Navy
Produced	2009–present
Number built	8 flyable prototypes
Program cost	US$8–10 billion (est.)
Unit cost	T-50: US$50+ million
Variants	Sukhoi/HAL FGFA

The Sukhoi PAK FA (Russian: Сухой ПАК ФА, Russian: Перспективный авиационный комплекс фронтовой авиации, Perspektivny Aviatsionny Kompleks Frontovoy Aviatsii, literally "Prospective Airborne Complex of Frontline Aviation") is a fifth-generation fighter programme of the Russian Air Force. The T-50 is the name of the prototype aircraft (though it is unlikely it will be the name for the production aircraft) designed by Sukhoi for the PAK FA programme. The aircraft is a stealthy, single-seat, twin-engine jet fighter, and will be the first operational aircraft in Russian service to use stealth technology. It is a multirole fighter designed for air superiority and attack roles. The fighter is planned to have supercruise, stealth, supermaneuverability, and advanced avionics to overcome the prior generation of fighter aircraft as well as ground and maritime defences.

The PAK FA is intended to be the successor to the MiG-29 and Su-27 in the Russian Air Force and serve as the basis for the Fifth Generation Fighter Aircraft (FGFA) being co-developed by Sukhoi and Hindustan Aeronautics Limited (HAL) for the Indian Air Force. The T-50 prototype first flew on 29 January 2010 and the first production aircraft is slated for delivery to the Russian Air Force starting in late 2016 or early 2017. The prototypes and initial production batch will be delivered with a highly upgraded variant of the AL-31F used by the Su-27 family as interim engines while a new clean-sheet design powerplant is currently under development. The aircraft is expected to have a service life of up to 35 years.