Built in Russia during the 1930s, it flew 11 times before crashing and killing 15 people.
The designer, Konstantin Kalinin, wanted to build two more planes but the project was scrapped.
Later, Stalin had Kalinin executed.
Evidently, it was not good to fail on an expensive project under Stalin .
The size would be equivalent to the Empire State Building on its side, with cannons.
In the 1930s the Russian army was obsessed by the idea of creating huge planes.
Not many photos were saved from those times ..............
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