Kosmos 936
Kosmos 936 or Bion 4 (Бион 4, Космос 936) was a Bion satellite. The mission involved nine countries in a series of biomedical research experiments. The experiments were primarily follow-ups to the Bion 3 (Kosmos 782) flight. Scientists from the Bulgaria, Czechoslovakia, East Germany, France, Hungary, Poland, Romania, the United States and the Soviet Union conducted experiments in physics and biology on the mission.
Conception of Bion 4 in orbit | |
| Names | Бион 4 Bion 4 Biocosmos 4 Biokosmos 4 |
|---|---|
| Mission type | Bioscience |
| Operator | Institute of Biomedical Problems |
| COSPAR ID | 1977-074A |
| SATCAT no. | 10172 |
| Mission duration | 19.5 days |
| Spacecraft properties | |
| Spacecraft | Bion 4 |
| Spacecraft type | Bion |
| Bus | Zenit |
| Manufacturer | TsSKB |
| Launch mass | 4,000 kg (8,800 lb) |
| Start of mission | |
| Launch date | 3 August 1977, 14:01:00 UTC |
| Rocket | Soyuz-U 11A511U s/n D15000-113 |
| Launch site | Plesetsk, Site 43/3 |
| Contractor | TsSKB |
| End of mission | |
| Recovered by | Soviet Space Forces |
| Landing date | 22 August 1977, 01:05 UTC |
| Landing site | 51°53′N 61°30′E near Kustanay, Kazakhstan, Soviet Union |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Perigee altitude | 224 km (139 mi) |
| Apogee altitude | 419 km (260 mi) |
| Inclination | 62.80° |
| Period | 90.70 minutes |
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