Kosmos 638, the first uncrewed orbital test of the Soyuz 7K-TM ASTP docking spacecraft with the APAS-75 androgynous docking system. Soyuz-U from Baikonur LC-31/6 lofted the craft on 3 April 1974 for a 10-day rehearsal ahead of the 1975 Apollo–Soyuz mission.
- Outcome
- Success
- Payload to orbit
- 6.8 T
- Flight
- 5th
- of 714 Soyuz U flights
- Date and time
- 3 April 1974, 07:30 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 31/6, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Unknown
- International designator
- 1974-018
- Launches in 1974
- 19th of 113
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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