The plane, which was designed by the famed Sukhoi Design Bureau, is armed with a single 30mm cannon and internally-mounted missiles to reduce its radar signature.
Reports say the plane incorporates stealth technologies.
The aerodynamics during supersonic flight have been proven. Russian designers say the forward-wing concept, which is inherently unstable, may not show up in final production models of the aircraft. Two similar U.S.-made models by Grumman flew 442 research flights between 1984 and 1992 and had three digital flight control computers, each with an analog backup, said Aviation Weekly. 2000 Newsline USA . All rights reserved.