Kerbal Space Program - LK-700/UR-700A - RSS

The ’other’ Soviet moon rocket. The UR-700 was the brainchild of Vladimir Chelomei, utilizing the same UDMH/NTO fuel as the Proton to power nine of the mighty RD-270 engines. On the -700A seven hydrogen-burning RD-0410 nuclear engines would have been used on the third stage, with an additional three engines on the fourth stage, enabling the vehicle to place up to 110 tons into deep space. For more on the UR-700A - For more on the LK-700 spacecraft - http://www.