Su-57 Felon

The Su-57 Felon, previously known as the PAK-FA (Perspektivnnyi Aviatsionnyi Kompleks - Frontovoi Aviatsyi or Future Air System for Tactical Air Forces), or by its Sukhoi industrial designation of T-50, is Russia's program to develop a fifth-generation fighter to replace Moscow's aging MiG-29 and Su-27/Su-30 fighters and compete with the American F-22 and F-35.

The first prototype may be a technology demonstrator featuring a new airframe wrapped around engines and systems of the...