The F-22 Raptor is the new air superiority fighter currently being developed by the American Air Force which at the beginning of the 21st century will have to replace the current F-15 Eagles in service since the late 1970s. The Raptor will use the most recent engine technologies to reach supersonic speed without the aid of post burners, it will also be equipped with sophisticated electronic equipment for the use of weapons that it carries internally to reduce the Radar track and improve aerodynamic performance.