1967-058A
The first in the new series was V-67 No. 310. It was launched on 1967 Jun 12 and named Venera-4. A course correction on Jul 27 corrected the initial miss distance of 160000 km. The main bus separated from the Spuskaemiy Apparat (SA) prior to entry. At an altitude of 55 km the parachutes were deployed and the instruments were turned on. The Venera-4 SA was apparently destroyed at an altitude of 27 km and impacted near latitude +19, longitude 38. The extrapolated surface conditions were temperature 500C, pressure 75 bar.
| Venera-4 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1967 Jun 12 | 0239:45 | Launch by 8K78M | KB |
| 0244 | Blok-A sep | ||
| 0244 | Blok-I burn | ||
| 0249 | Blok-I sep | ||
| 0400? | BOZ burn | ||
| 0400? | Blok-L burn, solar orbit | ||
| 0405? | Blok-L sep | ||
| 1967 Jul 29 | TCM | ||
| 1967 Oct 18 | 0236 | Range 40000 km | |
| 0350? | Range 20000 km | ||
| 1967 Oct 18 | 0418 | SA sep | |
| 0434 | Entry | ||
| 0437 | Signal received | ||
| 1967 Oct 18 | 0439:10 | Parachutes out, 55 km | |
| 0532 | Pressure sensor failed | ||
| 0614:00 | LOS, 27 km | ||
| 0635? | Venus impact | ||
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