Aerojet AJ10-190
Historical Aerojet AJ10-190 orbital maneuvering engine: a pressure-fed hypergolic MMH/nitrogen-tetroxide liquid rocket engine used in the Space Shuttle Orbital Maneuvering System and later refurbished for Orion's service module. NASA references about 27 kN (6,000 lbf) vacuum thrust and roughly 316 s specific impulse; no separate vehicle-family relationship is asserted in this packet.
Identity
- Aliases
- AJ10-190AJ10-190 OMEOrbital Maneuvering Engine
- Domains
- spaceflight
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- Aerojet AJ10-190
- Status
- historical
Details
- Description
- Historical Aerojet AJ10-190 orbital maneuvering engine: a pressure-fed hypergolic MMH/nitrogen-tetroxide liquid rocket engine used in the Space Shuttle Orbital Maneuvering System and later refurbished for Orion's service module. NASA references about 27 kN (6,000 lbf) vacuum thrust and roughly 316 s specific impulse; no separate vehicle-family relationship is asserted in this packet.
- Propellants
- monomethylhydrazinenitrogen tetroxide
- Rocket Specs
- Cycle
- pressure-fed
- Vacuum Specific Impulse S
- 316
- Vacuum Thrust Kn
- 27
Links
- Official Url
- https://ntrs.nasa.gov/citations/20240005874
Assets & Meta
- Creation Time
- August 14, 2026 at 23:54:35 UTC
- Updated Time
- August 14, 2026 at 23:54:35 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- NASA states that Orion's OMS-E was a refurbished Space Shuttle OMS engine that previously flew on nineteen missions, establishing the AJ10-190's flown orbital-maneuvering lineage without implying current production.
- Publisher
- NASA Technical Reports Server
- Title
- Artemis I Orion ESM Propulsion System Engine Performance
- Accessed Date
- 2026-08-14
- Note
- NASA describes the Shuttle Orbital Maneuvering System engines as hypergolic engines producing 27 kN (6,000 lbf) vacuum thrust.
- Publisher
- NASA Technical Reports Server
- Title
- Space Shuttle News Reference
- Accessed Date
- 2026-08-14
- Note
- NASA's technical review identifies AJ10-190 as a gimballed hypergolic engine with approximately 26,690 N thrust and 316 s specific impulse, and lists Shuttle OMS and Orion service-module use.
- Publisher
- NASA Technical Reports Server
- Title
- Development of Concept Illustration Variants of the JUMP Lander