Soyuz 35

Infobox Space mission
mission_name = Soyuz 35
sign = Dnieper
crew_members = 2
launch = April 9, 1980
13:38:22 UTC
Baikonur LC31
landing = June 3, 1980
15:06:23 UTC
180 km SE of Dzhezkazgan
duration = 55d/01:28:01
orbits = 2917
next = Soyuz 36
previous = Soyuz 34 |

Crew

Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.

Launched:
*Leonid Popov (1) - Commander
*Valery Ryumin (3) - Flight Engineer

Landed:
*Valery Kubasov (3) - Commander
*Bertalan Farkas (Hungary) (1) - Research Cosmonaut

Backup crew

*Vyacheslav Zudov - Commander
*Boris Andreyev - Flight Engineer

Mission parameters

*Mass: 6800 kg
*Perigee: 198 km
*Apogee: 259.7 km
*Inclination: 51.65°
*Period: 88.81 minutes

Mission highlights

8th expedition to Salyut 6. Returned to Earth carrying the crew launched on Soyuz 36.

Valentin Lebedev was scheduled to be Leonid Popov’s flight engineer, but he required an operation after injuring his knee while working out on a trampoline. Ryumin, of the last crew to visit Salyut 6, was called in to fill his place. Upon entering Salyut 6, Ryumin noted that the two viewports in the transfer compartment had lost their transparency. The windows also had many chips in them caused by micrometeoroids and orbital debris. The cosmonauts replaced components of the attitude control system and life support system, installed a new caution and warning system, synchronized the station’s clocks with those in the TsUP, added an 80 kg storage battery, and replaced air from tanks in Progress 8.

While aboard Salyut 6 station, on July 19, Popov and Ryumin sent their greetings to the Olympians and wished them happy starts in the live communication between the station and the Central Lenin Stadium, where the opening ceremony of the 1980 Summer Olympics was held. They appeared on the stadium's scoreboard and their voices were translated via loud speakers.