The Ilyushin Il-4 (Cyrillic Илью́шин Ил-4, NATO reporting name: "Bob") was a Soviet World War II bomber aircraft, widely used by the Soviet Air Force (VVS, Voenno-Vozdushnye Sily), although not well known.
Read more about Ilyushin Il-4: Design and Development, Operational History, Operators, Specifications (Il-4)