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.
April 2012 - Shuttle Carrier Aircraft (SCA) is positioned beneath Space Shuttle Discovery in the mate-demate device at Kennedy Space Center in Florida. The orbiter was mated to the modified 747 for its flight to Washington, DC on April NASA Photo: