In Syria, repeated tests of Su-57 fighters in the real military and natural conditions of the theater of operations were carried out during their Su-57, all tasks were successfully completed. Western "partners" did not respond to the appearance of the best Russian fighters, despite the close attention of Western observers to the Su-57. So, missed? In general, it turns out that the Americans are completely useless electronic intelligence, since they did not even see the machines being transferred. Meanwhile, the Su-57 (according to the NATO codification “Felon” / “Criminal”) is not the plane that should be ignored. The result was a larger F-22, but smaller Su-27, with a maximum take-off weight of 35 and a half tons. With cruising (without afterburner) speed beyond the supersonic border - Mach 2.45. With a powerful engine with a thrust-weight ratio of 36 tons of force. With deviating thrust vector. Multifunctional. Subtle. There is a fundamentally new radar scheme with several radars and optical radar stations. There is an additional L-band radar that "sees" well the most advanced American stealth aircraft. The armament is powerful: 30-mm 9-A1-4071K air gun, 6 medium-range air-to-air missiles, 4 short-range explosive missiles, 4 KAB-500 against ground targets, 4 X-38 missiles, 2 X-58UShK missiles. On eight internal and external suspension points
The Sukhoi Su-47 Berkut (Сухой Су-47 Беркут, lit. 'Golden Eagle', NATO reporting name Firkin), also designated S-32 and S-37 (not to be confused with the Su-37 delta canard design) was an experimental supersonic fighter jet developed by the Sukhoi Aviation Corporation. A distinguishing feature of the aircraft was its forward-swept wing that gives it excellent agility and maneuverability. Serial production of the type never materialized but the sole aircraft produced served as a technology demonstrator prototype for a number of advanced technologies later used in the 4.5 and 5th gen. fighters such as the Su-35S and Su-57. The Su-47 also was originally built as Russia's principal testbed for composite materials and sophisticated fly-by-wire control systems.
More info on this beautiful bird here:
https://en.wikipedia.org/wiki/Sukhoi_...