R-4D-15 HiPAT
R-4D-15 HiPAT is L3Harris's high-performance variant of the R-4D MMH/NTO spacecraft-thruster family. The manufacturer publishes a 378–511 N thrust envelope and 320.6 s at a 60 s run or 322.2 s on long-duration operation; the structured fields record the upper published thrust and long-duration specific impulse, while the prose preserves the operating-point range.
Identity
- Aliases
- R-4D-15HiPAT
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- chemical-thruster
- Name
- R-4D-15 HiPAT
- Status
- active
Details
- Description
- R-4D-15 HiPAT is L3Harris's high-performance variant of the R-4D MMH/NTO spacecraft-thruster family. The manufacturer publishes a 378–511 N thrust envelope and 320.6 s at a 60 s run or 322.2 s on long-duration operation; the structured fields record the upper published thrust and long-duration specific impulse, while the prose preserves the operating-point range.
- Family
- Manufacturers
- Propellants
- monomethylhydrazine (MMH)nitrogen tetroxide (NTO)
- Rocket Specs
- Vacuum Specific Impulse S
- 322.2
- Vacuum Thrust Kn
- 0.511
Assets & Meta
- Creation Time
- August 15, 2026 at 05:18:31 UTC
- Updated Time
- August 15, 2026 at 05:18:31 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- Manufacturer product sheet lists R-4D-15 thrust of 378–511 N and 320.6 s at 60 s or 322.2 s for long-duration operation.
- Published Date
- 2023-06-14
- Publisher
- L3Harris Technologies
- Title
- Bipropellant Rocket Engines
- Accessed Date
- 2026-08-14
- Note
- Current manufacturer propulsion page identifies R-4D-15 HiPAT as a current R-4D product variant.
- Publisher
- L3Harris Technologies
- Title
- Chemical In-Space Propulsion
- Accessed Date
- 2026-08-14
- Note
- NASA technical paper distinguishes high-performance R-4D variants in spacecraft propulsion design context.
- Published Date
- 2020-07-01
- Publisher
- NASA
- Title
- Development of Concept Illustration Variants of the JUMP Lander