Soyuz 1

Soyuz 1

1964 commemorative stamp of Vladimir Komarov
Mission type	Test flight
Operator	Experimental Design Bureau (OKB-1)
COSPAR ID	1967-037A
SATCAT no.	02759
Mission duration	1 day 2 hours 47 minutes 52 seconds
Orbits completed	18
Spacecraft properties
Spacecraft	Soyuz 7K-OK No.1
Spacecraft type	Soyuz 7K-OK
Manufacturer	Experimental Design Bureau (OKB-1)
Launch mass	6450 kg
Landing mass	2800 kg
Dimensions	10 m long (with solar panels) 2.72 m wide
Crew
Crew size	1
Members	Vladimir Komarov
Callsign	Рубин (Rubin – "Ruby")
Start of mission
Launch date	23 April 1967, 00:35:00 GMT
Rocket	Soyuz 11A511 s/n U15000-04
Launch site	Baikonur, Site 1/5[1]
Contractor	Experimental Design Bureau (OKB-1)
End of mission
Landing date	24 April 1967, 03:22:52 GMT
Landing site	3 km west of Karabutak, Orenburg Oblast, Russian SFSR, Soviet Union[2]
Orbital parameters
Reference system	Geocentric orbit
Regime	Low Earth orbit
Perigee altitude	197.0 km
Apogee altitude	223.0 km
Inclination	50.8°
Period	88.7 minutes
Soyuz programme ← Kosmos 140 Soyuz 2 →

Soyuz 1 (Russian: Союз 1, Union 1) was a crewed spaceflight of the Soviet space program. Launched into orbit on 23 April 1967 carrying cosmonaut colonel Vladimir Komarov, Soyuz 1 was the first crewed flight of the Soyuz spacecraft. The flight was plagued with technical issues, and Komarov was killed when the descent module crashed into the ground due to a parachute failure. This was the first in-flight fatality in the history of spaceflight.

The original mission plan was complex, involving a rendezvous with Soyuz 2 and an exchange of crew members before returning to Earth. However, the launch of Soyuz 2 was called off due to thunderstorms.