LE-5A
The expander-bleed successor to LE-5 used by the retired H-II launch vehicle.
Identity
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- LE-5A
- Status
- retired
Details
- Description
- The expander-bleed successor to LE-5 used by the retired H-II launch vehicle.
- Family
- Lineage
- Note
- JAXA identifies LE-5A as the higher-performance successor developed from LE-5.
- Related Propulsion System
- Relationship
- direct-derivative-of
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Japan Aerospace Exploration Agency
- Title
- H-II Launch Vehicle
- Accessed Date
- 2026-07-29
- Publisher
- Japan Aerospace Exploration Agency
- Title
- LE-5B
- Propellants
- liquid hydrogenliquid oxygen
- Rocket Specs
- Cycle
- expander-bleed
- Restartable
- Yes
- Vacuum Specific Impulse S
- 453
- Vacuum Thrust Kn
- 122
Links
- Official Url
- https://global.jaxa.jp/projects/rockets/h2/
Assets & Meta
- Creation Time
- July 29, 2026 at 08:48:36 UTC
- Updated Time
- July 29, 2026 at 08:50:26 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Note
- Supports the legacy vehicle installation and the narrow canonical identity used for migration.
- Publisher
- Official vehicle or program source
- Title
- H-II Launch Vehicle official vehicle reference
- Accessed Date
- 2026-07-29
- Publisher
- Japan Aerospace Exploration Agency
- Title
- LE-5B