launched from Russia

Korbal-Sputnik

Failure
JUL 28196009:31:00 UTC

Longitudinal vibration caused a breakdown of the combustion chamber and explosion in the Blok G strap-on. The launch vehicle disintegrated.

launched from Pad 1/5 Baikonur

aboard Vostok L L1-10

Payload

Korbal-Sputnik (Vostok)