Epsilon Post-Boost Stage
Epsilon's optional integrated hydrazine post-boost propulsion stage for precision orbit insertion; no narrower engine model is asserted.
Identity
- Aliases
- Epsilon PBSPost Boost Stage
- Domains
- spaceflight
- Identity Level
- integrated-system
- Kind
- integrated-propulsion-system
- Name
- Epsilon Post-Boost Stage
- Status
- unknown
Details
- Description
- Epsilon's optional integrated hydrazine post-boost propulsion stage for precision orbit insertion; no narrower engine model is asserted.
- Propellants
- hydrazine
Assets & Meta
- Creation Time
- August 1, 2026 at 16:32:37 UTC
- Updated Time
- August 1, 2026 at 16:32:37 UTC
Other
- Sources
- Accessed Date
- 2026-08-01
- Note
- JAXA identifies PBS as the optional post-boost stage, specifies hydrazine propellant, and distinguishes it from the three solid rocket motors.
- Publisher
- Japan Aerospace Exploration Agency
- Title
- Epsilon User's Manual
- Accessed Date
- 2026-08-01
- Note
- JAXA describes the PBS as the small liquid propulsion system used for fine orbit insertion on Enhanced Epsilon missions.
- Publisher
- JAXA Space Transportation Technology Directorate
- Title
- Epsilon