Kosmos 638 - Wikipedia

Kosmos 638
Spacecraft properties
Soyuz 7K-TM

Mission type	Orbital test flight
Operator	Soviet space program
COSPAR ID	1974-018A
SATCAT no.	7234
Mission duration	9 days, 21 hours and 35 minutes


Spacecraft	Soyuz 7K-TM s/n 71
Manufacturer	NPO Energia
Launch mass	6,570 kg (14,480 lb)


Start of mission
Launch date	3 April 1974, 07:30 (1974-04-03UTC07:30Z) GMT
Rocket	Soyuz-U
Launch site	Baikonur 31/6


End of mission
Disposal	Deorbited
Landing date	13 April 1974, 05:05 (1974-04-13UTC05:06Z) GMT


Orbital parameters
Reference system	Geocentric
Perigee altitude	187 km (116 mi)
Apogee altitude	309 km (192 mi)
Inclination	51.8°
Period	89.4 min

Soyuz programme ← Soyuz 13 Kosmos 656 → Kosmos (satellites) ← Kosmos 637 Kosmos 639 →

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

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

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.^[1] This led to the next test also being uncrewed.^[1]

Mission parameters[edit]

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

References[edit]

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

^ ^a ^b ^c ^d Rex Hall; David Shayler (2003). Soyuz: A Universal Spacecraft. Springer Science & Business Media. p. 211. ISBN 978-1-85233-657-8.

Soyuz programme

Main topics

Past missions
(by spacecraft type)

Soyuz 7K-OK (1966–1970)	Kosmos 133† Soyuz 7K-OK No.1† (uncrewed) 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) 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-09 MS-10† MS-11 MS-12 MS-13 MS-14 (uncrewed test flight) MS-15 MS-16 MS-17 MS-18 MS-19 MS-20 MS-21 MS-22 (uncrewed landing) MS-23 (uncrewed launch) MS-24

Current missions

MS-25

Future missions

2024
- MS-26

Uncrewed missions are designated as Kosmos instead of Soyuz; exceptions are noted "(uncrewed)".
The † sign designates failed missions. Italics designates cancelled missions.

← 1973

Orbital launches in 1974

1975 →

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

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Mission parameters[edit]

See also[edit]

References[edit]