Kosmos 670

Kosmos 670 ( meaning Cosmos 670) was an unmanned Soyuz 7K-S test. It used a new and unique inclination of 50.6 degree. The experience from these flights were used in the development of the successor program Soyuz spacecraft the Soyuz 7K-ST.astronautix.com soyuz7k-s

Mission parameters Spacecraft: 7K-S Mass: 6700 kg Crew: None Launched: August 6, 1974 Landed: August 8, 1974 23:59 UTC. Perigee: 221 km Apogee: 294 km Inclination: 50.6 deg Duration: 2.99 days