Tested spacecraft systems and designs, manoeuvring of space craft with respect to each other in orbit, conducted scientific, technical and medico-biological experiments in group flight. Was to have docked with Soyuz 8 and transferred crew while Soyuz 6 took film from nearby. However failure of rendezvous electronics in all three craft due to a new helium pressurization integrity test prior to the mission did not permit successful rendezvous and dockings. Recovered October 17, 1969 9:26 GMT.
202km X 227km orbit to 211km X 223km orbit. Delta V: 3 m/s
201km X 201km orbit to 201km X 201km orbit. Delta V: 1 m/s
211km X 223km orbit to 201km X 244km orbit. Delta V: 8 m/s
Total Delta V: 12 m/s. References: 1 , 2 , 6 , 32 , 33 , 60 .