Here is what is known about Russian Su-57 aircraft, which Russia has rarely used in the war against Ukraine because of their value and small numbers. Su-57: the “not-quite-fifth” generation aircraftThe Su-57 (NATO codified Felon) is a Russian multi-role fighter aircraft that Russia classifies as a fifth-generation aircraft, i.e. the most modern type of jet fighter. The aircraft was developed by the Russian Sukhoi Research and Development Bureau. Initially, India was also involved in the development, but later withdrew from the program. The Su-57 made its first flight in January 2010. In 2019, …
