Kosmos-2I was the light, two-stage R-12-derived branch of the Soviet Kosmos launch-vehicle program. The line began flying in 1961, launched the first spacecraft to receive a Kosmos designation in March 1962, and remained in use through 1977 for small military and scientific payloads from Kapustin Yar and Plesetsk.
Future launches and major activity directly linked to this vehicle family.