http://www.youtube.com/PowerRussia Российская Федерация The Su-37 is a single-seat, all-weather, fighter and ground attack prototype aircraft, derived from the Su-27 'Flanker'. The Su-27 is a Russian fourth generation jet aircraft that has been exported to over 20 nations. The Su-37 test aircraft made its maiden flight in April 1996 from the Zhukovsky flight testing center near Moscow. The Su-37 includes several updates over the Su-27, including all-weather multi-mode passive electronically scanned array radar with synthetic aperture, terrain avoidance, terrain mapping and a rear facing radar. The airframe includes a percentage of parts made from composites, unlike the all-metal Su-27. Additionally, the Su-37 incorporates the AL-37FU engines equipped with thrust vectoring. The Su-37's nozzles are variable in pitch only and travel plus or minus 15 degrees, but they can be operated differentially to provide a rolling moment. United States of America The Lockheed Martin/Boeing F-22 Raptor is an American fighter aircraft that uses stealth technology. It is primarily an air superiority fighter, but has multiple capabilities that include ground attack, electronic warfare, and signals intelligence roles. The United States Air Force considers the F-22 a critical component of the U.S. strike force.[1] Faced with a protracted development period, the aircraft was variously designated F-22 and F/A-22 during the three years before formally entering US Air Force service in December 2005, as the F-22A. Lockheed Martin Aeronautics is the prime contractor and is responsible for the majority of the airframe, weapon systems and final assembly of the F-22. Program partner Boeing Integrated Defense Systems provides the wings, aft fuselage, avionics integration, and all of the pilot and maintenance training systems. The F-22 is claimed by several sources to be the world's most effective air superiority fighter. The US Air Force claims that the F-22 cannot be matched by any known or projected fighter aircraft.[1] Chief of the Australian Defence Force, then-Air Marshal Angus Houston, said in 2004 that the "F-22 will be the most outstanding fighter plane ever built.