Here’s the historical information on the nuclear Soyuz variants I have been able to find. My Russian is not great, in some cases the translation is awkward or not completely clear. Nick
The draft design of the rockets started on the basis of the Decree of June 30, 1958. Two bureaus, OKB-456, and OKB-670 were involved. The design chosen was based on direct heating of the working fluid, and it’s ejection through the nozzle. An open core reactor, in other words.
Quick introduction. I have recently been working on Chelomei’s UR-700, his Universal Rocket System, based on a design unit that eventually became the Proton. It was intended to replace the N-1 as the vehicle to take the Soviet Union to the moon.
Thanks to a comment left on these forums, I was refered to a website which had photos of something I never knew was built – a large scale model of the UR700, for vibration testing! It was made at 1/10th scale.
Before we get started, here’s a render I did, which shows you the overall configuration. I think this will help you understand the layout.
Back to the space hardware, and my latest major project.
This is Chelomei’s UR-700, intended as a universal rocket, (in various configurations), and a competitor to the N-1.
This was a real monster, and basically consisted of a cluster of no less than nine Proton rockets. This was done so they could be comprehensively tested at the factory near Moscow, and shipped on trains to Baikonur for assembly. The Proton started as the UR-500, an element of this design. The engines were built and tested, but there was no appetite to start again, cancelling the N-1.
This is a design by Kraft Ehrike, which appeared in “Life” magazine in 1958. From what I understand, the idea was to use the kind of cylindrical hulls and spherical ended tanks from upper rocket stages as basic units of contruction.
Ehrike worked with Wernher von Braun at Peenemunde on the V2 rocket program, and continued to work with WvB after they had moved to the USA.