![]() ![]() By the late 1980s, Sukhoi were evaluating their research using its flying test beds. Lyulka (later Lyulka-Saturn) also began studies of thrust-vectoring engines in 1985. This was in contrast to the prevailing focus on two-dimensional nozzles in the Western press. At the insistence of General Director Mikhail Simonov, who had been the chief designer of the Su-27, Sukhoi and the Siberian Aeronautical Research Institute studied axisymmetrical vectoring nozzles. The Sukhoi Design Bureau started research on thrust vectoring as early as 1983, when the Soviet government tasked the bureau with the separate development of the Su-27M, which was an upgrade of the Su-27. Sukhoi had instead applied the aircraft's systems to the design bureau's other fighter designs. The Su-37 did not enter production despite a report in 1998 which claimed that Sukhoi had built a second Su-37 using the twelfth Su-27M airframe, T10M-11 remained the sole prototype. The aircraft crashed in December 2002 due to structural failure. Throughout the flight-test program, the Su-37 demonstrated its supermaneuverability at air shows, performing manoeuvres such as a 360-degree somersault. The aircraft made its maiden flight in April 1996. ![]() In addition, it was modified with updated flight- and weapons-control systems. The sole aircraft had originally been built as the eleventh Su-27M (T10M-11) by the Komsomolsk-on-Amur Aircraft Production Association before having its thrust-vectoring nozzles installed. It allowed for the need to enhance pilot control of the Su-27M (later renamed Su-35), which was a further development of the Su-27. The Sukhoi Su-37 (Russian: Сухой Су-37 NATO reporting name: Flanker-F popularly nicknamed " Terminator" ) was a single-seat twin-engine aircraft designed by the Sukhoi Design Bureau that served as a technology demonstrator. Komsomolsk-on-Amur Aircraft Production Association ![]()
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