Portal:Space exploration/Featured/December 2007

The Energia (or Energiya, Энергия in Russian, meaning Energy) rocket 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 Space Shuttle. It had the capacity to place around 100 metric tons in Low Earth orbit.

Work on the Energia/Buran system began in 1976 after the decision was made to cancel the unsuccessful N1 rocket. The cancelled N1 rocket-based Manned Lunar Launch Facilities and Infrastructure were used for Energia (notably the huge horizontal assembly building) - just as NASA reused infrastructure designed for the Saturn V in the Space Shuttle program. Energia also replaced the "Vulkan" concept, which was a design based on the Proton rocket and using the same toxic hypergolic fuels, but much larger and more powerful. The "Vulkan" designation was later on given to a variation of the Energia which has eight boosters and multiple stages.

The Energia was first test-launched 15 May 1987 21:30 with Polyus (UKSS military payload), where the Energia itself functioned well, but the Polyus did not reach orbit due to a mishap of its own attitude control system after separation from Energia.

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