Rocketdyne RS-25D
Exact historical Rocketdyne RS-25D staged-combustion cryogenic engine variant used by the Space Shuttle and retained in upgraded inventory for SLS. This packet creates the canonical propulsion identity only; RS-25 family membership, SLS or shuttle vehicle installations, current production, actor attribution, and lineage edges remain separately evidence-bound.
Identity
- Aliases
- RS-25DRS25DSpace Shuttle Main EngineSSME
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- Rocketdyne RS-25D
- Status
- historical
Details
- Description
- Exact historical Rocketdyne RS-25D staged-combustion cryogenic engine variant used by the Space Shuttle and retained in upgraded inventory for SLS. This packet creates the canonical propulsion identity only; RS-25 family membership, SLS or shuttle vehicle installations, current production, actor attribution, and lineage edges remain separately evidence-bound.
- Family
Links
Assets & Meta
- Creation Time
- August 6, 2026 at 23:31:13 UTC
- Updated Time
- August 6, 2026 at 23:37:30 UTC
Other
- Sources
- Accessed Date
- 2026-08-06
- Note
- NASA explicitly identifies RS-25D engines as the shuttle-era engines being moved for SLS use and records their proven shuttle role.
- Publisher
- NASA
- Title
- NASA Moves Shuttle Engines from Kennedy to Stennis
- Accessed Date
- 2026-08-06
- Note
- NASA documents the RS-25 core-stage engine lineage, shuttle inventory, and SLS adaptation while preserving the exact RS-25D historical boundary.
- Publisher
- NASA
- Title
- SLS (Space Launch System) RS-25 Core Stage Engine
- Accessed Date
- 2026-08-06
- Note
- NASA technical documentation names four RS-25D model engines in the SLS core-stage propulsion system.
- Publisher
- NASA Technical Reports Server
- Title
- Space Launch System Base Heating Test: Sub-Scale Rocket Engine/Motor Design, Development and Performance Analysis