It was larger and more powerful than Concorde, but it needed to be as it was over 20 tonnes heavier ... it was the turn of the Tupolev Tu-144. A look at the record-breaking ANT-25.

B. Blaiszik, University of Illinois When Soviet designer Andrei Tupolev completed the ANT-20, or Maxim Gorky, in 1934, it was not only the world’s largest airplane, it was among the most innovative.