Kosmos 772 ( meaning Cosmos 772) was an uncrewed military Soyuz 7K-S test. It was an unsuccessful mission as only one transmitter worked. Only the 166 MHz frequency transmitter operated, all of the other normal Soyuz wavelengths transmitters failed. The experience from these flights were used in the development of the successor program Soyuz spacecraft the Soyuz 7K-ST.

Mission parameters

• Spacecraft: Soyuz 7K-S

• Mass: 6750kg

• Crew: None

• Launched: September 29, 1975

• Landed: October 3, 1975 4:10 UTC

• Perigee: 154km

• Apogee: 245km

• Inclination: 51.8 deg

• Duration: 3.99 days

Maneuver Summary

• 193km X 270km orbit to 195km X 300km orbit. Delta V: 8m/s.

• 196km X 300km orbit to 196km X 328km orbit. Delta V: 8m/s.

Total Delta V: 16m/s.

See also

• Cosmos 670

• Cosmos 869

References