Sukhoi PAK FA:

The Sukhoi PAK FA manufactured by the Russian, PAK FA is an abriviation of "Prospective Airborne Complex of Frontline Aviation") is a fifth jeneration jet fighter and twin-engine jet fighter being developed by Sukhoi for the Russian Air Force. The Sukhoi T-50 is the prototype for PAK FA.

 

Soukhoï Su-47 Berkut

Soukhoï Su-47 is a Russian fighter aircraft It is called the Berkut "golden eagle" .

The main feature that makes it instantly recognizable, his wing is sharply reversed.

This feature would enable him to have a speed, a range, a maximum operational capacity to carry a stealth, handling out of the ordinary, and many Russian technology .

I put this video for Soukhoï Su-47 Berkut: