Rocketdyne J-2S
Rocketdyne J-2S tap-off-cycle cryogenic upper-stage engine development variant. This packet creates the exact historical propulsion identity only; J-2 family membership, proposed vehicle installations, actors, J-2X lineage, and other study configurations remain out of scope.
Identity
- Aliases
- J-2SRocketdyne J-2SJ2S
- Domains
- spaceflight
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- Rocketdyne J-2S
- Status
- historical
Details
- Description
- Rocketdyne J-2S tap-off-cycle cryogenic upper-stage engine development variant. This packet creates the exact historical propulsion identity only; J-2 family membership, proposed vehicle installations, actors, J-2X lineage, and other study configurations remain out of scope.
Links
- Official Url
- https://ntrs.nasa.gov/citations/19940016798
Assets & Meta
- Creation Time
- August 6, 2026 at 19:06:15 UTC
- Updated Time
- August 6, 2026 at 19:06:15 UTC
Other
- Sources
- Note
- NASA identifies the J-2S engine as a large high-energy upper-stage engine candidate and documents its restart study.
- Publisher
- NASA Technical Reports Server
- Title
- Advanced transportation system studies: Alternate propulsion subsystem concepts: J-2S restart study
- Note
- NASA records full-scale J-2S engine testing and its 265,000-pound-thrust development hardware.
- Publisher
- NASA Technical Reports Server
- Title
- Altitude development testing of the J-2S rocket engine
- Note
- NASA identifies the heritage J-2S tap-off-cycle engine as a direct technical basis for the later J-2X program.
- Publisher
- NASA Technical Reports Server
- Title
- The J-2X fuel turbopump: Design, development, and test