Encyclopedia Astronautica

Russian military surveillance satellite. Study 1977. 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.

AKA: 11F661.

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Associated Countries
See also
Associated Launch Vehicles
  • Soyuz Russian orbital launch vehicle. The world's first ICBM became the most often used and most reliable launch vehicle in history. The original core+four strap-on booster missile had a small third stage added to produce the Vostok launch vehicle, with a payload of 5 metric tons. Addition of a larger third stage produced the Voskhod/Soyuz vehicle, with a payload over 6 metric tons. Using this with a fourth stage, the resulting Molniya booster placed communications satellites and early lunar and planetary probes in higher energy trajectories. By the year 2000 over 1,628 had been launched with an unmatched success rate of 97.5% for production models. Improved models providing commercial launch services for international customers entered service in the new millenium, and a new launch pad at Kourou was to be inaugurated in 2009. It appeared that the R-7 could easily still be in service 70 years after its first launch. More...

Associated Manufacturers and Agencies
  • Kozlov Russian manufacturer of rockets and spacecraft. Kozlov Central Specialized Design Bureau, Samara, Russia. More...

  • Sorokin, Vladislav, "'Yantarnaya istoriya'", Novosti Kosmonavtiki, 1997, Issue 17, page 57.
  • Grahn, Sven, Sven Grahn's Space History Pages, Web Address when accessed: here.
  • Melnik, T G, Voenno-Kosmicheskiy Siliy, Nauka, Moscow, 1997..
  • Sorokin, V, "Yantarnaya istoriya-2", Novosti kosmonavtiki, No. 11, 1999, p. 71..

Yantar-6KS Chronology

  • Council of Chief Designers reconsiders Yantar Soviet reconnsat designs - . Nation: USSR. Spacecraft: Yantar-2K; Yantar-4K1; Yantar-4K2; Orlets-1; Orlets-2; Yantar-6K; Yantar-6KS; Yantar-4KS1. 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.

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