H-IIA Solid Strap-on Booster (SSB)
The integrated solid strap-on booster boundary used on H-IIA 2022 and H-IIA 2024. The exact SSB system is modeled without asserting the Castor 4AXL suffix because the primary JAXA/NASA sources establish the SSB installation and counts but do not provide one consistent canonical motor record.
Identity
- Aliases
- SSBH2A SSBSolid Strap-on Booster
- Domains
- spaceflight
- Identity Level
- integrated-system
- Kind
- integrated-propulsion-system
- Name
- H-IIA Solid Strap-on Booster (SSB)
- Status
- historical
Details
- Description
- The integrated solid strap-on booster boundary used on H-IIA 2022 and H-IIA 2024. The exact SSB system is modeled without asserting the Castor 4AXL suffix because the primary JAXA/NASA sources establish the SSB installation and counts but do not provide one consistent canonical motor record.
- Propellants
- solid composite propellant
Links
Assets & Meta
- Creation Time
- August 1, 2026 at 17:08:32 UTC
- Updated Time
- August 1, 2026 at 17:08:32 UTC
Other
- Sources
- Accessed Date
- 2026-08-01
- Note
- JAXA explicitly identifies the H2A2022 model as carrying two SRB-A boosters and two Solid Strap-on Boosters (SSB).
- Publisher
- Japan Aerospace Exploration Agency
- Title
- Overview of H-IIA Launch Vehicle No. 13
- Accessed Date
- 2026-08-01
- Note
- NASA identifies the H-2A 2024 model as carrying two SRB-A boosters and four SSB strap-on boosters; the SSB is retained as an integrated boundary rather than an invented Castor suffix.
- Publisher
- NASA Launch Services Program
- Title
- H-IIA/B Data Sheet