Status
Failure
Cosmos 300
Launch Time
Tue Sep 23, 1969 14:07 UTC
Tue Sep 23, 1969 14:07 UTC
A valve of Block D did not close correctly following the first burn of the stage, and caused a spinning movement. The stage engines ignited automatically to stop this rotation, this until depletion of the propellants. The stage cannot perform the planned second ignition.
Rocket
Mission Details
Cosmos 300
The Ye-8-5 is a version of the Ye-8 to drill a small sample of lunar soil and return it to earth. This could be launched in coordination with the L3S. Although not a manned lunar landing, it would provide a Soviet crew in orbit around the moon, and return of lunar soil to earth, nearly matching the Apollo mission. The last chance to upstage the Americans was a combined launch of the N1-L3S and Ye-8-5 before Apollo 11 in July.
Payloads: 1
Total Mass: 5,600.0 kg
Trans Lunar Injection
Location
Site 81/24, Baikonur Cosmodrome, Kazakhstan
Stats
1969
93rd orbital launch attempt
Proton-K
17th mission
8th mission of 1969
9th failed mission