Boeing B-29 Stratofortress

 thanks to Wikipedia

Due to the B-29's highly advanced design for its time, unlike many other World War II-era bombers, the Superfortress remained in service long after the war ended, with a few even being employed as flying television transmitters for theStratovision company. The B-29 served in various roles throughout the 1950s. The Royal Air Force flew the B-29 as theWashington until phasing out the type in 1954. The Soviet Union produced an unlicensed reverse-engineered copy as theTupolev Tu-4. The B-29 was the progenitor of a series of Boeing-built bombers, transports, tankers, reconnaissance aircraft and trainers including the B-50 Superfortress (the first aircraft to fly around the world non-stop) which was essentially a re-engined B-29. The type was finally retired in the early 1960s. The B-29 production total was 3,970 aircraft.