Buran and Space Shuttle. Buran (snow storm) flew only once, powered into orbit by the Energia. Unlike the NASA orbiter which had main engines on the orbiter itself in addition to the SRB's, the Buran received all of its boost into space from the Energia.
slaaneshi-party-bus: Little known fact: roleplaying games are very popular in the grimdark future of Warhammer but that Sister of Battle shouldn’t have tried to rules-lawyer her Deathwatch friend. He seems upset.