DefenceTalkRussia’s state hi-tech corporation Rostec has conducted 16 flights of the fifth-generation Su-57 fighter jet to test its new 2nd stage engine, Rostec Aviation Cluster Industrial Director Anatoly Serdyukov said on Friday. “Currently, the engineering bench tests of the advanced engine continue and the item is being tested on a flying laboratory. In October, another […]https://www.defencetalk.com/russias-su-57-fighter-jet-test-flights-2nd-stage-engine-72697/