HM7B

E290056
cryogenic rocket engine liquid-fuel rocket engine

The HM7B is a European cryogenic rocket engine that powers the upper stages of Ariane launch vehicles, providing precise orbital insertion using liquid hydrogen and liquid oxygen propellants.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (1)

Label Occurrences
HM7B canonical 3

Statements (46)

Predicate Object
instanceOf cryogenic rocket engine ⓘ
liquid-fuel rocket engine ⓘ
agencyUser European Space Agency ⓘ
application commercial satellite launches ⓘ
scientific missions ⓘ
belongsToFamily HM7 engine ⓘ
surface form: HM7 engine family
burnTime up to 945 s ⓘ
chamberPressure 3.5 MPa ⓘ
countryOfOrigin Europe ⓘ
cycle gas-generator cycle ⓘ
designFeature extendable nozzle skirt ⓘ
hydrogen-cooled nozzle ⓘ
turbopump-fed system ⓘ
developedForProgram Ariane launch vehicle programme ⓘ
surface form: Ariane programme
developmentStart 1970s ⓘ
enteredService 1980s ⓘ
heritageFrom HM7 engine ⓘ
improvementOver HM7 engine ⓘ
manufacturer ArianeGroup ⓘ
Aérospatiale ⓘ
Snecma ⓘ
mixtureRatio 5.0 ⓘ
nozzleExpansionRatio 83 ⓘ
operatingEnvironment vacuum ⓘ
oxidizer liquid oxygen ⓘ
primaryRole geostationary transfer orbit insertion ⓘ
precise orbital injection ⓘ
propellant liquid hydrogen ⓘ
liquid oxygen ⓘ
propellantFeedSystem turbopump-fed ⓘ
restartCapability non-restartable ⓘ
reusability expendable ⓘ
specificImpulseVacuum 444 s ⓘ
status operational ⓘ
successor Vinci engine ⓘ
thrustVacuum 62 kN ⓘ
thrustVectorControl gimballed nozzle ⓘ
use orbital insertion ⓘ
upper stage propulsion ⓘ
usedOnStage Ariane upper stage ⓘ
usedOnVehicle Ariane 1 ⓘ
Ariane 2 ⓘ
Ariane 3 ⓘ
Ariane 4 ⓘ
Ariane 5 ECA ⓘ
usedWithPropellantCombination LOX/LH2 ⓘ

Referenced by (3)

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

Ariane 5 ECA → upperStageEngine → HM7B ⓘ
Ariane 1 → thirdStageEngine → HM7B ⓘ
Ariane 3 → thirdStageEngine → HM7B ⓘ