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Mir EP-1

Mir EO-2
Mission type Mir expedition
Mission duration 326 days (Romanenko) (launch to landing)
Expedition
Space Station Mir
Began 5 February 1987, 21:38:03 (1987-02-05UTC21:38:03Z) UTC
Ended 29 December 1987, 09:16:00 (1987-12-29UTC09:17Z) UTC
Arrived aboard Soyuz TM-2
Alexandrov: Soyuz TM-3
Departed aboard Soyuz TM-3
Laveykin: Soyuz TM-2
Crew
Crew size Two
Members Yuri Romanenko
Aleksandr Laveykin
Aleksandr Aleksandrov
Callsign Tamyr
Long-term Mir expeditions
← EO-1
EO-3 →

Mir EO-2 (also called Mir Principal Expedition 2) was the second long duration expedition to the Soviet space station Mir, and it lasted from February to December 1987. The mission was divided into two parts (sometimes called (a) and (b)), the division occurring when one of the two crew members, Aleksandr Laveykin, was replaced part way through the mission by Aleksandr Aleksandrov. Laveykin was replaced because ground-based doctors had diagnosed him with minor heart problems.

The core module or Mir had been launched into orbit on 19 February 1986. It had been visited twice by the crew of Soyuz T-15, between March and July 1986, who transferred equipment from the previous Soviet space station Salyut 7. Prior to the arrival of EO-2, Mir was also visited by three Progress spacecraft, numbered 25, 26, and 27, as well as an unmanned Soyuz-TM spacecraft, designated TM-1. From July 1986 to the arrival of EO-2 in February, Mir remained unmanned. During this time an associated relay satellite ceased operation, and computers on Mir were malfunctioning.

Progress 27 docked with the station on 18 January, and was still there when the EO-2 crew arrived. On 26 January, the Progress spacecraft boosted the station's mean altitude by 16 km to 345 km.

The crew from February to July 1987, consisted of Commander Yuri Romanenko, and Flight Engineer Aleksandr Laveykin. From July to December 1987 the crew consisted of Romanenko and Aleksandr Aleksandrov.

EO-2 was originally planned to consist of Aleksandr Serebrov and Vladimir Titov, but shortly before launch of Soyuz TM-2 to start the expedition, the crew was changed to Romanenko and Laveykin, possibly due to illness. Titov and Serebrov were listed as the backup crew for the mission.


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