It has Developed and improved version of the basic Su-27 Flanker designed, the Su-37 is based on the Su-35 airframe but with thrust vectoring nozzles to give it supreme maneuverability. In addition to provided that more power than previous engines, the engines on the Su-37 develop steerable nozzles which can vector the engine thrust through +/- 15 degrees of travel in the vertical axis. This thrust vectoring is fully integrated with the aircraft's flight control systems, and requires no input or manipulation by the pilot. In the event of a system failure, an emergency system will return the nozzles to their standard situation. Other modifications to the Su-37 include improved offensive and defensive avionics, an improved pulse doppler phased array radar in the nose as well as the rearward facing radar already present on the Su-34 and 35.
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