Launch from the Baikonur Cosmodrome; landing
180 km northwest of Karaganda.
It was to get the spacecraft
rendezvoused with
Soyuz 7 and
Soyuz 8 and to have taken spectacular
motion pictures of the
Soyuz 7 -
Soyuz 8 docking. It became a joint
mission of three spacecraft with
Soyuz
7 and
Soyuz 8 but no rendezvous,
due to a failure in the rendezvous electronics in all three spacecraft, so
there was only an approaching. First vacuum welding in space by
Kubasov using welding construction "VULKAN". The crew tested
three different methods of welding. The weld quality was said to be in no way
inferior to that of Earth based welds. Several scientific und technical
experiments were also performed.