Soyuz 11

E911001

Soyuz 11 was a Soviet crewed spaceflight in 1971 that successfully occupied the world’s first space station, Salyut 1, but ended tragically when its three cosmonauts died during reentry due to cabin depressurization.

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Statements (50)

Predicate Object
instanceOf Soyuz mission
crewed spaceflight
causeOfAccident premature opening of pressure equalization valve
commander Georgy Dobrovolsky NERFINISHED
cosmonautNationality Soviet
country Soviet Union
crewDeathCause asphyxiation
crewDeathLocation in space during reentry phase
crewMember Georgy Dobrovolsky NERFINISHED
Viktor Patsayev NERFINISHED
Vladislav Volkov NERFINISHED
crewSize 3
crewStatusAtLanding all three cosmonauts dead
dockedWith Salyut 1 NERFINISHED
dockingDate 1971-06-07
fatalities 3
flightEngineer Vladislav Volkov NERFINISHED
followedBy Soyuz 12 NERFINISHED
impactOnDesign led to requirement for cosmonauts to wear pressure suits during launch and reentry
landingDate 1971-06-30
landingSite Kazakh SSR NERFINISHED
steppe of Kazakhstan
landingType capsule landing under parachute
launchDate 1971-06-06
launchSite Baikonur Cosmodrome
Baikonur Cosmodrome Site 1/5 NERFINISHED
launchVehicle Soyuz rocket NERFINISHED
missionDuration 23 days
23 days 18 hours 21 minutes
missionEnd 1971-06-30
missionObjective Occupy and conduct experiments aboard Salyut 1
missionOutcome crew killed during reentry
partial failure
missionStart 1971-06-06
notableFor first successful occupation of a space station
only human spaceflight accident to occur in space
orbitalInclination 51.6 degrees
orbitReference Low Earth orbit
precededBy Soyuz 10 NERFINISHED
program Soyuz program NERFINISHED
reentryAccident cabin depressurization
researchEngineer Viktor Patsayev NERFINISHED
spaceAgency Soviet space program NERFINISHED
spacecraftType Soyuz 7K-OKS NERFINISHED
spaceStationFirsts first long-duration crewed stay on a space station
spaceStationOccupationDuration about 23 days
spaceStationProgram Salyut program NERFINISHED
spaceStationVisited Salyut 1 NERFINISHED
undockingDate 1971-06-29
yearOfEvent 1971

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.