US Plazma-A In 1987 two experimental Plazma-A satellites (Cosmos 1818 and 1867) were launched with new-generation Topaz reactors. The spacecraft used the US-A first generation bus but tested new on-board systems being developed for the US-AM. These included new elements of the orientation system, and ion engines.                   Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2007 except where otherwise noted.

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