R-4D-11
The R-4D-11 is the 110-lbf-class, 490 N, 315 s variant of L3Harris's R-4D bipropellant spacecraft-thruster family. Current L3Harris Orion material identifies eight R-4D-11 thrusters on the European Service Module for crewed Orion maneuvering; this packet records the engine identity but does not infer a vehicle-family edge while the canonical Orion family target remains absent.
Identity
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- chemical-thruster
- Name
- R-4D-11
- Status
- active
Details
- Description
- The R-4D-11 is the 110-lbf-class, 490 N, 315 s variant of L3Harris's R-4D bipropellant spacecraft-thruster family. Current L3Harris Orion material identifies eight R-4D-11 thrusters on the European Service Module for crewed Orion maneuvering; this packet records the engine identity but does not infer a vehicle-family edge while the canonical Orion family target remains absent.
- Family
- Manufacturers
- Propellants
- monomethylhydrazine (MMH)nitrogen tetroxide (NTO)
- Rocket Specs
- Vacuum Specific Impulse S
- 315
- Vacuum Thrust Kn
- 0.489
Assets & Meta
- Creation Time
- August 15, 2026 at 05:10:15 UTC
- Updated Time
- August 15, 2026 at 05:10:15 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- Current mission material identifies L3Harris R-4D-11 thrusters on Orion for course corrections and maneuvers.
- Publisher
- L3Harris Technologies
- Title
- Artemis II
- Accessed Date
- 2026-08-14
- Note
- Current Orion material describes eight bipropellant engines based on the flight-proven R4D family mounted on the European Service Module.
- Publisher
- L3Harris Technologies
- Title
- Orion
- Accessed Date
- 2026-08-14
- Note
- NASA technical paper gives the R-4D-11 490 N/315 s configuration.
- Published Date
- 2020-07-01
- Publisher
- NASA
- Title
- Development of Concept Illustration Variants of the JUMP Lander