Aestus
Aestus pressure-fed, storable-propellant liquid rocket engine for Ariane 5 EPS upper stages. ESA identifies MMH/N2O4 propellants, 27.5 kN vacuum thrust, roughly 1,100 s burn operation, and reignitable/gimballed operation; status remains retired.
Identity
- Domains
- spaceflight
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- Aestus
- Status
- retired
Details
- Description
- Aestus pressure-fed, storable-propellant liquid rocket engine for Ariane 5 EPS upper stages. ESA identifies MMH/N2O4 propellants, 27.5 kN vacuum thrust, roughly 1,100 s burn operation, and reignitable/gimballed operation; status remains retired.
- Propellants
- monomethyl hydrazinenitrogen tetroxide
- Rocket Specs
- Burn Time S
- 1,100
- Cycle
- pressure-fed
- Restartable
- Yes
- Vacuum Thrust Kn
- 27.5
Links
Assets & Meta
- Creation Time
- July 29, 2026 at 08:15:45 UTC
- Updated Time
- August 22, 2026 at 06:22:33 UTC
- Image
- Download
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
- Ariane 5 ES 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
- Ariane 5 Generic Plus 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
- Ariane 5 GS official vehicle reference
- Accessed Date
- 2026-07-29
- Publisher
- European Space Agency
- Title
- Ariane 5 Storable Propellant Stage
- Accessed Date
- 2026-07-29
- Publisher
- European Space Agency
- Title
- Ariane launch log 1996 to 2023