RL10C-1-1
L3Harris/Aerojet Rocketdyne RL10C-1-1 cryogenic expander-cycle upper-stage engine for Atlas V and Vulcan Centaur. L3Harris identifies the exact variant at 23,825 lbf (106.0 kN) thrust, 453.8 s specific impulse, 415 lb (188.24 kg) dry weight, and 96.7 in (2.456 m) length on liquid hydrogen/liquid oxygen; ULA and NRO mission materials document Centaur flight use. The row remains distinct from the separately named RL10C-1-1A configuration where that installation boundary is supported.
Identity
- Aliases
- RL10C-1-1RL10C-1 Engine
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- liquid-rocket-engine
- Name
- RL10C-1-1
- Status
- active
Details
- Description
- L3Harris/Aerojet Rocketdyne RL10C-1-1 cryogenic expander-cycle upper-stage engine for Atlas V and Vulcan Centaur. L3Harris identifies the exact variant at 23,825 lbf (106.0 kN) thrust, 453.8 s specific impulse, 415 lb (188.24 kg) dry weight, and 96.7 in (2.456 m) length on liquid hydrogen/liquid oxygen; ULA and NRO mission materials document Centaur flight use. The row remains distinct from the separately named RL10C-1-1A configuration where that installation boundary is supported.
- Dry Mass Kg
- 188.24
- Family
- Length M
- 2.456
- Propellants
- liquid hydrogenliquid oxygen
- Rocket Specs
- Cycle
- expander
- Vacuum Specific Impulse S
- 453.8
- Vacuum Thrust Kn
- 106
Links
- Official Url
- https://www.ulalaunch.com/rockets/atlas-v
Assets & Meta
- Creation Time
- July 31, 2026 at 23:07:58 UTC
- Updated Time
- August 21, 2026 at 19:47:46 UTC
Other
- Sources
- Accessed Date
- 2026-07-31
- Note
- ULA identifies the Atlas V 401 installation with an Aerojet Rocketdyne RL10C-1 engine on Centaur; the exact RL10C-1-1 variant is documented in ULAs Atlas V mission materials.
- Publisher
- United Launch Alliance
- Title
- United Launch Alliance Successfully Launches Important Earth Science Mission for NASA
- Accessed Date
- 2026-07-31
- Note
- ULAs Atlas V 401 brochure identifies the single RL10C-1 Centaur engine and the exact 401 configuration with no solid strap-on boosters.
- Publisher
- United Launch Alliance
- Title
- Atlas V 401 mission brochure
- Accessed Date
- 2026-07-31
- Note
- ULA distinguishes the higher-performance RL10C-1-1 engine variant used on Atlas V Centaur, preserving the exact model boundary from RL10C-1-1A.
- Publisher
- United Launch Alliance
- Title
- Atlas V USSF-51
- Accessed Date
- 2026-08-21
- Note
- L3Harris identifies RL10C-1-1 for Atlas V and Vulcan Centaur at 23,825 lbf thrust, 415 lb weight, 453.8 s specific impulse, and 96.7 in length.
- Publisher
- L3Harris
- Title
- RL10 Engine
- Accessed Date
- 2026-08-14
- Publisher
- National Reconnaissance Office
- Title
- Silent Barker launch press kit