The Vostok-K ( meaning "East"), GRAU index 8K72K was an expendable carrier rocket used by the Soviet Union for thirteen launches between 1960 and 1964, six of which were crewed. It incorporated several modifications to the core and strap-ons to man-rate them and the Blok E stage also had the improved RD-0109 engine to correct some deficiences in the RD-0105 used on earlier 8K78s. It was a member of the Vostok family of rockets.
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The Vostok-K ( meaning "East"), GRAU index 8K72K was an expendable carrier rocket used by the Soviet Union for thirteen launches between 1960 and 1964, six of which were crewed. It incorporated several modifications to the core and strap-ons to man-rate them and the Blok E stage also had the improved RD-0109 engine to correct some deficiences in the RD-0105 used on earlier 8K78s. It was a member of the Vostok family of rockets.
The Vostok-K made its maiden flight on 22 December 1960, three weeks after the retirement of the Vostok-L. The third stage engine failed 425 seconds after launch, and the payload, a Korabl-Sputnik spacecraft, failed to reach orbit. The spacecraft was recovered after landing, and the two dogs aboard the spacecraft survived the flight.
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