Finally!! Russia Tests Su-57 Felon Fighter Jet With New Flat Nozzle Engine

Russia Tests Su-57 Felon Fighter Jet With New Flat Nozzle Engine. Russia is currently upgrading its fifth-generation Sukhoi Su-57 stealth fighter with a new-generation flat-nozzle variable thrust vectoring engine. The Union of Engine Manufacturers reports its successful completion of the testing phase for a sixth-generation engine designed for the Su-57 Felon stealth fighter. The Union of Engine Manufacturers incorporates flat nozzle technology, and is poised to play a critical role in enhancing the overall performance capabilities of this advanced engine.