Launch from Baikonur; landing with Soyuz
34-capsule 295 km northwest of Dzheskasgan.
Docking on Salyut 6;
third resident
crew. During their residence unmanned cargo spacecrafts Progress 5 -7 and
unmanned spacecraft Soyuz 34 docked on the station. The Soyuz 34 was needed,
because of the failing docking-attempt of the
Soyuz 33 spacecraft. Soyuz-spacecrafts
could only be used for 90 days, so a new one (unmanned) spacecraft was
needed.
When they arrived on the station, they had to make preparing
work, because the station had to be repaired (sprung propellant leak of the
propulsion system). The tank repairing took some time, after the arrival of the
Progress 5-spacecraft, but was successful. Testing new developed
Gamma-Ray-Telescope. Experiments in materials science were also performed.
Progress-spacecraft brought 10 m-reflector to the spacestation, which unfolded
independent at the stations tall. Test of the "Cosmic Radio-Telescope" (
KRT-10).
Both cosmonauts conducted an
EVA on
15.08.1979 (1h 23m) to jettison the
KRT-10
antenna from rear docking port and to inspect the exterior of Salyut 6. They
also retrieved samples of materials from the stations hull.
All in all
the crew set a new spaceflight-record.
