Did you know that the only fighter jet equipped with DIRCM is the Su-57 Felon?
An interesting feature of the Su-57 that no other fighter jet has is the 101KS-O DIRCM The configuration of the Sukhoi Su-57 Felon is an evolution of the Su-27’s shape adapted for the requirements of low visibility and supersonic speed and agility. According to Sukhoi, the Su-57’s radar cross section (RCS) is reduced to an average figure of 0.3-0.4m2 compared to 15m2 for the Su-27. As explained by Piotr Butowski in his book Russia’s Warplanes, Volume 1, the main solution to reduce radar visibility is internal carriage of weapons. Radar blockers reduce reflections from the engine inlet guide vanes and are installed in the engine air intake ducts. The shape of the airframe has been selected to reduce the number of directions in which electro-magnetic waves are reflected, and to ensure these directions are the safest. Another group of stealth measures concern the fighter ’s equipment. The surfaces of the NO36 radar arrays are deflected from the vertical plane, thus defle...