Blok-L

E529485

rocket upper stage

Blok-L is a Soviet-era rocket upper stage used primarily to place payloads into highly elliptical orbits, notably for Molniya communications satellites.

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Observed surface forms (1)

Surface form	Occurrences
Blok L	1

Statements (41)

Predicate	Object
instanceOf	rocket upper stage ⓘ
application	civil communications ⓘ data relay services ⓘ military communications ⓘ
category	Soviet rocket stages ⓘ upper stages for communications satellites ⓘ
countryOfOrigin	Soviet Union ⓘ
designedFor	Molniya launch vehicle NERFINISHED ⓘ Proton launch vehicle variants ⓘ R-7 derived launch vehicles ⓘ
developedIn	1960s ⓘ
era	Cold War ⓘ
heritage	R-7 rocket family ⓘ
launchRole	fourth stage ⓘ
launchSiteUsed	Baikonur Cosmodrome NERFINISHED ⓘ Plesetsk Cosmodrome NERFINISHED ⓘ
manufacturer	Soviet aerospace industry ⓘ
missionProfile	apogee kick for elliptical orbits ⓘ
notablePayload	Molniya series communications satellites NERFINISHED ⓘ
operatedBy	Soviet military space forces NERFINISHED ⓘ Soviet space program NERFINISHED ⓘ
orbitTypeTargeted	Molniya orbit NERFINISHED ⓘ highly elliptical orbit ⓘ
oxidizer	liquid oxygen ⓘ
partOf	Soviet launch vehicle upper stage family ⓘ
propellantType	kerosene ⓘ liquid oxygen ⓘ
propulsionType	liquid-fueled rocket engine ⓘ
stageNumber	upper stage ⓘ
status	retired ⓘ
usedFor	injection into Molniya orbit ⓘ injection into highly elliptical orbit ⓘ injection of payloads into high apogee orbits ⓘ launch of Molniya communications satellites ⓘ launch of early Soviet communications satellites ⓘ
usedFrom	1960s ⓘ
usedIn	Earth orbit missions ⓘ Soviet military communications missions ⓘ communications satellite missions ⓘ
usedWith	Molniya-M launch vehicle NERFINISHED ⓘ Proton-K launch vehicle variants NERFINISHED ⓘ

Referenced by (2)

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

Molniya-M rocket → upperStage → Blok-L ⓘ

subject surface form: Molniya-M

Molniya 8K78 → upperStage → Blok-L ⓘ

this entity surface form: Blok L