RL10C-1-1A
The active RL10C-1-1A variant powers the Vulcan Centaur Centaur V upper stage in a two-engine configuration. L3Harris publishes the corresponding RL10C-1-1 model at 23,825 lbf thrust, 453.8 s specific impulse, and 96.7 in length; ULA identifies the Vulcan installation as RL10C-1-1A.
Identity
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- RL10C-1-1A
- Status
- active
Details
- Description
- The active RL10C-1-1A variant powers the Vulcan Centaur Centaur V upper stage in a two-engine configuration. L3Harris publishes the corresponding RL10C-1-1 model at 23,825 lbf thrust, 453.8 s specific impulse, and 96.7 in length; ULA identifies the Vulcan installation as RL10C-1-1A.
- Family
- Length M
- 2.456
- Propellants
- liquid hydrogenliquid oxygen
- Rocket Specs
- Vacuum Specific Impulse S
- 453.8
- Vacuum Thrust Kn
- 106
Links
- Official Url
- https://www.ulalaunch.com/rockets/vulcan-centaur
Assets & Meta
- Creation Time
- July 29, 2026 at 09:03:44 UTC
- Updated Time
- August 20, 2026 at 08:52:43 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
- Vulcan Centaur official vehicle reference
- Accessed Date
- 2026-08-20
- Note
- L3Harris lists the RL10C-1-1 model used on Atlas V and Vulcan at 23,825 lbf thrust, 453.8 s specific impulse, and 96.7 in length.
- Publisher
- L3Harris
- Title
- RL10 Engine
- Accessed Date
- 2026-08-20
- Note
- ULA identifies two RL10C-1-1A engines on Centaur V, each producing 23,825 lbf or about 106 kN of thrust.
- Publisher
- United Launch Alliance
- Title
- Cert-2: Vulcan rocket readied for second flight test