The Tupolev Tu-4 (NATO reporting name: Bull) was a piston-engined Soviet strategic bomber that served the Soviet Air Force from the late 1940s to mid 1960s. It was a reverse-engineered copy of the U.S.-made Boeing B-29 Superfortress.
Read more about Tupolev Tu-4: Design and Development, Operational History, Variants, Survivors, Specifications (Tu-4)