RD-0124A
KBKhA four-chamber LOX/kerosene staged-combustion upper-stage engine for Angara. RD-0124A derives from RD-0124 but changes fuel extraction for chamber-deflection control, tank pressurization, and flight duration; KBKhA records 30 tf vacuum thrust, 359 s vacuum specific impulse, successful Angara 1.2PP and Angara-5 flight tests, and continuing manufacture for Angara. Lifecycle remains active based on repeated flight operation and current production evidence.
Identity
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- RD-0124A
- Status
- active
Details
- Description
- KBKhA four-chamber LOX/kerosene staged-combustion upper-stage engine for Angara. RD-0124A derives from RD-0124 but changes fuel extraction for chamber-deflection control, tank pressurization, and flight duration; KBKhA records 30 tf vacuum thrust, 359 s vacuum specific impulse, successful Angara 1.2PP and Angara-5 flight tests, and continuing manufacture for Angara. Lifecycle remains active based on repeated flight operation and current production evidence.
- Developers
- Lineage
- Note
- KBKhA identifies RD-0124A as an RD-0124 derivative with control, pressurization, and flight-duration changes for Angara.
- Related Propulsion System
- Relationship
- direct-derivative-of
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Chemical Automatics Design Bureau (KBKhA)
- Title
- RD0124A
- Manufacturers
- Propellants
- keroseneliquid oxygen
- Rocket Specs
- Chamber Count
- 4
- Vacuum Specific Impulse S
- 359
- Vacuum Thrust Kn
- 294.2
Links
Assets & Meta
- Creation Time
- July 29, 2026 at 11:38:53 UTC
- Updated Time
- August 15, 2026 at 04:10:51 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Chemical Automatics Design Bureau (KBKhA)
- Title
- RD0124A
- 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
- Angara A5 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
- Angara 1.2 official vehicle reference
- Accessed Date
- 2026-08-14
- Publisher
- Chemical Automatics Design Bureau (KBKhA)
- Title
- Production capabilities: RD0124A currently produced for Angara
- Accessed Date
- 2026-08-14
- Publisher
- Chemical Automatics Design Bureau (KBKhA)
- Title
- Angara-A5 Vostochny launch with RD0124A