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Article Number: 11F661. Class: Surveillance. Type: Military. Destination: Surveillance Orbit. Nation: Russia. Manufacturer: Kozlov. Electro-optical imaging operational high resolution version of Yantar studied in 1969. A draft project was completed in May 1977, but the decision was made to keep the basic Yantar-2K satellite bus instead, resulting in the Yantar-4KS1 reconnaissance satellite. Associated Launch Vehicle: Soyuz 11A511U.
Yantar-6KS Chronology - 1977 May 1 - Council of Chief Designers reconsiders Yantar Soviet reconnsat designs -
Flight trials of the Yantar-2K indicated the satellite was not capable of providing strategic warning of attack. The planned Yantar-6K series, in development since 1969, were overweight and behind schedule. A meeting of the Council of Chief Designers at TsSKB reviewed alternative approaches. It was decided that three variants of the Yantar-2K were to be developed, one of them the high resolution Yantar-4K.
Bibliography and Further Reading - Sorokin, Vladislav, Novosti Kosmonavtiki, "'Yantarnaya istoriya'", 1997, Issue 17, page 57.
- Sorokin, V, Novosti kosmonavtiki, "Yantarnaya istoriya-2", No. 11, 1999, p. 71..
- Melnik, T G, Voenno-Kosmicheskiy Siliy, Nauka, Moscow, 1997.. Two-volume official history of the (now defunct) Russin space forces.
- Grahn, Sven, Sven Grahn's Space History Pages, . Sven Grahn's occasional essays on specific topics of the Russian and Chinese space programs are outstanding. Accessed at: http://www.svengrahn.pp.se/.
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