Soyuz 9 Program: Soyuz. Payload: Soyuz 7K-OK s/n 17. Mass: 6,590 kg. Class: Manned. Type: Spacecraft. Spacecraft: Soyuz 7K-OK. Perigee: 176 km. Apogee: 227 km. Inclination: 51.6 deg. Period: 88.5 min. COSPAR: 1970-041A. Duration: 17.71 days. Flight Crew: Nikolayev, Sevastyanov. Manned flight: Soyuz 9.
Manned flight endurance test. Medico-biological, scientific and technical studies and experiments in prolonged orbital flight. Inconclusive results due to slow sun-oriented rotation of spacecraft to conserve fuel producing motion sickness in cosmonauts. Recovered June 19, 1970 11:59 GMT.
176km X 228km orbit to 208km X 256km orbit. Delta V: 17 m/s
208km X 256km orbit to 244km X 259km orbit. Delta V: 10 m/s
Total Delta V: 27 m/s.
References: 1 , 2 , 6 , 32 , 33 , 60 .