Energia

Energia (Russian: Энергия, Energiya, "Energy") was a Soviet rocket that was designed by NPO Energia to serve as a heavy-lift expendable launch system as well as a booster for the Buran spacecraft. Control system main developer enterprise was the NPO "Electropribor". The Energia used four strap-on boosters powered by a four-nozzle RD-170 engine burning with kerosene/LOX, and a central core stage with 4 one-chamber RD-0120 (11D122) engines fueled with liquid hydrogen/LOX.