Cosmos 638

Mission dates

Mission:

Cosmos 638

COSPAR-ID :

1974-018A

Spacecraft:

Soyuz 7K-TM ( GRAY index 11F615A12)
serial number 71

Dimensions:

6570 kg

Launcher:

Soyuz U (GRAY index 11A511U)

Crew:

no

Begin:

April 3, 1974, 07:40 UTC

Starting place:

Baikonur 31/6

Landing:

April 13, 1974, 04:48 UTC

Rotation time :

89.4 min

Orbit inclination :

51.8 °

Apogee :

309 km

Perigee :

187 km

◄ Before / After ►

Soyuz 13 (manned)	Kosmos 656 (unmanned)
Next manned mission:
	Soyuz 14

Kosmos 638 is the code name for an unmanned flight of the Soviet spaceship Soyuz that started on April 3, 1974 . It was customary in the Soviet Union to give official names only to successful missions. Failed flights were mostly not announced at all and test flights were only announced under the general cover name Kosmos. It was the 25th flight in the Soviet Soyuz program.

Mission overview

This was the first flight in preparation for the joint Apollo-Soyuz project with NASA . Instead of the standard coupling system, the spaceship had a modified system, called APAS-75, in order to be able to dock on the connection module APDS ( Androgynous Peripheral Docking System ). The spaceship was also fitted with two solar panels.

Cosmos 638

Mission overview

See also