Hey Claymore,
That's a production version of the Myasishchev M-17 Mystic. Looks like the drawings depict the "Geopishka" (alternately referred to as "Geophysica" or "Geophysics" ) which is slightly different than the original M-17 prototype.
The M-17 was developed as a high-altitude weather reconnaissance, air sampling, earth resources survey/remote sensing and astronomical/astrophysical research platform. There was one prototype completed and five production airframes as far as I know. All five production examples, I believe, were of the "Geophysica" layout. One of these was for ground testing with the rest being flight-rated.
I have some photos that I can scan. I'll try and get them posted here soon.
Fade to Black...