The Tupolev Tu-4 (Russian: Туполев Ту-4; NATO reporting name: ...
wikipedia - 30 Nov 2020The Tupolev Tu-4 (Russian: Туполев Ту-4; NATO reporting name: Bull) is a piston-engined Soviet strategic bomber that served the Soviet Air Force from the late 1940s to mid-1960s. It was reverse-engineered from the American Boeing B-29 Superfortress.