The Russian K-7 flying fortress was an experimental heavy bomber built in the 1930s.
Relying on propeller driven engines, and lots of them, the Kalinin K-7 was the Rube Goldberg invention of its time.
Check out the video and see what you think.
This thing actually flew an amazing 11 times in the ‘30s before crashing and killing some 15 people.
It’s said to have propellers on the back of the wings, and 12 in the front!
Still, who even knows how real something that big can be? I agree with the commenter that said it’s about as aerodynamic as his sofa.
Once I saw the pictures of it in the air with the flying saucer, it was time to give up.