Kosmos 638

A manned Soyuz 7K-TM as seen from Apollo module during the Apollo–Soyuz Test Project.

Kosmos 638 (Russian: Космос 638) was an unmanned test of the 1975 Apollo–Soyuz Test Project Soyuz. It carried an APAS-75 androgynous docking system.

This was followed by another unmanned test of this spacecraft type, Kosmos 672.^[1] It was a Soyuz 7K-TM spacecraft.^[2]

When the air was released from the orbital module (which is ejected before re-entry of the capsule) it caused unexpected motions with the spacecraft.^[3] This led to the next test also being unmanned.^[4]

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 RP 1357) (PDF format)
- Mir Hardware Heritage (NASA report RP 1357) (Wikisource)

↑ Hall, Rex; Shayler, David (2003-05-07). Soyuz: A Universal Spacecraft. Springer Science & Business Media. ISBN 9781852336578.
↑ Hall, Rex; Shayler, David (2003-05-07). Soyuz: A Universal Spacecraft. Springer Science & Business Media. ISBN 9781852336578.
↑ Hall, Rex; Shayler, David (2003-05-07). Soyuz: A Universal Spacecraft. Springer Science & Business Media. ISBN 9781852336578.
↑ Hall, Rex; Shayler, David (2003-05-07). Soyuz: A Universal Spacecraft. Springer Science & Business Media. ISBN 9781852336578.

Soyuz human spaceflight programme

Main topics

Current missions

Soyuz MS-09

Future missions

Past missions
(by spacecraft type)

Soyuz 7K-OK (1966–1970)	Kosmos 133† Soyuz 7K-OK No.1† Kosmos 140 Soyuz 1† Kosmos 186 188 212 213 238 Soyuz 2 (uncrewed) 3 4 5 6 7 8 9
Soyuz 7K-L1 (1967–1970) (Zond lunar programme)	Kosmos 146 154† Zond 1967A† 1967B† Zond 4 1968A† 1968B† 5 6 1969A† Zond-M 1† M 2† Zond 7 8 9 10
Soyuz 7K-L1E (1969–1970)	Soyuz 7K-L1E No.1† Kosmos 382
Soyuz 7K-LOK (1971–1972)	Soyuz 7K-LOK No.1† No.2†
Soyuz 7K-OKS (1971)	Soyuz 10† 11†
Soyuz 7K-T (1972–1981)	Kosmos 496 573 Soyuz 12 Kosmos 613 Soyuz 13 Kosmos 656 Soyuz 14 15† 17 18a† 18 20 (uncrewed) 21 23† 24 25† 26 27 28 29 30 31 32 (uncrewed landing) 33† 34 (uncrewed launch) 35 36 37 38 39 40
Soyuz 7K-TM (1974–1976)	Kosmos 638 672 Soyuz 16 19 (Apollo–Soyuz Test Project) 22
Soyuz 7K-S (1974–1976)	Kosmos 670 772† 869†
Soyuz-T (1978–1986)	Kosmos 1001† 1074 Soyuz T-1 (uncrewed) T-2 T-3 T-4 T-5 T-6 T-7 T-8† T-9 T-10a† T-10 T-11 T-12 T-13 T-14 T-15
Soyuz-TM (1986–2002)	Soyuz TM-1 (uncrewed) TM-2 TM-3 TM-4 TM-5 TM-6 TM-7 TM-8 TM-9 TM-10 TM-11 TM-12 TM-13 TM-14 TM-15 TM-16 TM-17 TM-18 TM-19 TM-20 TM-21 TM-22 TM-23 TM-24 TM-25 TM-26 TM-27 TM-28 TM-29 TM-30 TM-31 TM-32 TM-33 TM-34
Soyuz-TMA (2002–2012)	Soyuz TMA-1 TMA-2 TMA-3 TMA-4 TMA-5 TMA-6 TMA-7 TMA-8 TMA-9 TMA-10 TMA-11 TMA-12 TMA-13 TMA-14 TMA-15 TMA-16 TMA-17 TMA-18 TMA-19 TMA-20 TMA-21 TMA-22
Soyuz-TMA-M (2010–2016)	Soyuz TMA-01M TMA-02M TMA-03M TMA-04M TMA-05M TMA-06M TMA-07M TMA-08M TMA-09M TMA-10M TMA-11M TMA-12M TMA-13M TMA-14M TMA-15M TMA-16M TMA-17M TMA-18M TMA-19M TMA-20M
Soyuz MS (2016–present)	Soyuz MS-01 MS-02 MS-03 MS-04 MS-05 MS-06 MS-07 MS-08 MS-10†

Uncrewed missions are designated as Kosmos instead of Soyuz; exceptions are noted "(uncrewed)".
†: Failed missions. italics: cancelled missions.

← 1973 · Orbital launches in 1974 · 1975 →

Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).

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