1967-032C
The second 7K-L1 spacecraft, 11F91 No. 3P (L-1 No. 3) was launched on 1967 Apr 8. Chertok reports that a circumlunar flight was planned.
The Proton third stage delivered the L-1 and its Blok-D upper stage to a suborbital trajectory and the first Blok-D burn made low parking orbit. The SOZ ullage motors were jettisoned prematurely and the Blok-D stage was not restarted for the second burn (which would have come after 1 day in orbit).
To ensure the third stage falls in the Pacific rather than on Japan, we can either assume a flat trajectory at D ignition with a -500 km perigee or a slightly rising trajectory with a -1000 km perigee.
| Kosmos-154 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1967 Apr 8 | 0900:33 | Launch by Proton-K | KB LC81 |
| 0905 | Stage 3 burn | ||
| 0909 | Stage 3 sep | -500? x 190 x 51.5 | |
| -1000? x 200? x 51.5 | |||
| 0910? | Blok-D burn | ||
| 0912? | orbit insertion | 88.55 185 x 221 x 51.50 | |
| 1967 Apr 8 | SOZ jettison | ||
| 1967 Apr 9? | 0900? | Blok-D failed to fire | |
| 1967 Apr 10 | 1700 | 88.37 180 x 208 x 51.52 | |
| 1967 Apr 13 | End of transmissions | ||
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