Development of systems for the later operational Tselina satellites.
Specification
DS-K-40 Chronology
28 December 1965 DS-K-40 s/n 1 Program: DS. Launch Site: Kapustin Yar . Launch Vehicle: Kosmos 63S1. FAILURE: First stage failed.
21 February 1966 DS-K-40 s/n 2 Program: DS. Launch Site: Kapustin Yar . Launch Vehicle: Kosmos 63S1. FAILURE: First stage failed 83 seconds after launch.
Bibliography:
67 - Kaesmann, Ferdinand, et. al., Journal of the British Interplanetary Society, "Proton - Development of A Russian Launch Vehicle", 1998, Volume 51, page 3.