Su-74: The Fighter of the Future Russia Never Built
The Berkut's successor could have combined stealth technology and fantastic maneuverability
Su-47 «Berkut»
Su-57 received hidden compartments from "Berkut": key technology revealed
The experimental Su-47 became the basis for the fifth-generation fighter
Beyond the Ordinary: How and Why the Su-47 Fifth-Generation Aircraft Prototype with Forward-Swept Wing Was Developed
This wing configuration promised improved lift characteristics at subsonic speeds and stall resistance at high angles of attack