Inertial Upper Stage

E205225

The Inertial Upper Stage was a two-stage, solid-fueled rocket used primarily with the Space Shuttle and Titan launch vehicles to boost satellites from low Earth orbit to higher orbits such as geostationary transfer orbit.

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All labels observed (1)

Label Occurrences
Inertial Upper Stage canonical 8

Statements (49)

Predicate Object
instanceOf expendable launch vehicle stage
upper stage rocket
alternativeName IUS
controlSystem hydrazine reaction control system
countryOfOrigin United States of America
surface form: United States
deployedFrom Space Shuttle orbiter
surface form: Space Shuttle payload bay

Titan III upper stack
Titan IV upper stack
developedBy Boeing
developedFor United States Air Force
diameter approximately 2.8 meters
firstFlightDate 1982-10-30
firstFlightMission STS-5 with Columbia
surface form: STS-5
firstFlightVehicle Space Shuttle Columbia
firstStageMotor SRM-1
firstStagePropellant solid propellant
guidanceMethod strapdown inertial navigation
hasGuidanceSystem inertial guidance system
launchEnvironment deployed from low Earth orbit
launchMass approximately 14,000 kilograms
length approximately 5.2 meters
manufacturer Boeing
Boeing Defense, Space & Security
missionProfile two-burn transfer to higher energy orbit
numberOfStages 2
operatedBy United States Air Force
primaryFunction orbit-raising upper stage
propulsionType solid rocket motor
retirementPeriod early 2000s
secondStageMotor SRM-2
secondStagePropellant solid propellant
stageConfiguration two-stage solid-fueled upper stage
status retired
successor Centaur
surface form: Centaur G

Payload Assist Module
usedByAgency NASA
Department of Defense
surface form: United States Department of Defense
usedForOrbitTransfer geostationary transfer orbit
high Earth orbit
interplanetary trajectories
usedOnMission DSP early warning satellites
Galileo spacecraft
surface form: Galileo Jupiter orbiter

Magellan spacecraft
surface form: Magellan Venus orbiter

Milstar communications satellites
Global Positioning System satellites
surface form: Navstar GPS satellites

TDRS communications satellites
usedWithLaunchVehicle Space Shuttle
Titan III
Titan IV

Referenced by (8)

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

STS-26 payload Inertial Upper Stage
Magellan spacecraft upperStage Inertial Upper Stage
STS-44 upperStage Inertial Upper Stage
STS-34 galileoDeploymentMethod Inertial Upper Stage
STS-43 payload Inertial Upper Stage
STS-6 upperStageUsed Inertial Upper Stage
STS-41 payload Inertial Upper Stage
STS-93 payload Inertial Upper Stage