Summary

Russian bomber from the late 40's and early 50's.
It was advanced for its time.
Because it was designed by German engineers, it was given low priority causing delays until the program was ended with only a couple of test prototypes to show.

model in full dimensions in blender 2.79b and scaled to 1/100 for the .stl file
scale down to 35% in the slicer.

as usual, the dice are 15mm for reference
if I can't print it, I don't post it.