Kosmos 638 (Russian: Космос 638 meaning Cosmos 638) was an unmanned test of the ASTP Soyuz. It carried an APAS-75 androgynous docking system.

Mission parameters

  • Spacecraft: Soyuz-7K-TM №71
  • Mass: 6510 to 6680 kg
  • Crew: None
  • Launched: April 3, 1974
  • Landed: April 13, 1974

References

  • Mir Hardware Heritage
    • Mir Hardware Heritage - NASA report (PDF format)
    • Mir Hardware Heritage (wikisource)