In the 1930s the Russian army was obsessed by the idea of creating huge airplanes. The images below are of a super-sized Russian airplane, the K-7 heavy bomber, built during the 1930s. The plane 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.

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