LE-7A
The reliability- and cost-focused LE-7 derivative used by H-IIA and H-IIB.
Identity
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- LE-7A
- Status
- retired
Details
- Description
- The reliability- and cost-focused LE-7 derivative used by H-IIA and H-IIB.
- Family
- Lineage
- Note
- JAXA explicitly describes LE-7A as an improved LE-7 with simplified construction and redesigned turbopumps.
- Related Propulsion System
- Relationship
- direct-derivative-of
- Sources
- Nested value
- Propellants
- liquid hydrogenliquid oxygen
- Rocket Specs
- Cycle
- staged-combustion
- Vacuum Thrust Kn
- 1,098
Links
- Official Url
- https://www.rocket.jaxa.jp/rocket/engine/le7/
Assets & Meta
- Creation Time
- July 29, 2026 at 08:49:29 UTC
- Updated Time
- July 29, 2026 at 08:51:08 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-IIA Launch Vehicle official vehicle reference
- 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-IIB Launch Vehicle official vehicle reference
- Accessed Date
- 2026-07-29
- Publisher
- Japan Aerospace Exploration Agency
- Title
- July 2025 President's Press Conference: H-IIA Flight 50
- Accessed Date
- 2026-07-29
- Publisher
- Japan Aerospace Exploration Agency
- Title
- LE-7A