RL10
E52128
RL10 is a family of high-performance, liquid hydrogen–liquid oxygen cryogenic rocket engines developed by Aerojet Rocketdyne and widely used on U.S. upper stages such as Centaur and Delta IV.
Aliases (4)
- RL10 engine ×1
- RL10A-3 ×1
- RL10B-2 ×1
- RL10C-3 ×1
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
cryogenic rocket engine
→
rocket engine family → |
| application |
civil space missions
→
commercial satellite launches → military space missions → |
| combustionChamberType |
regeneratively cooled
→
|
| countryOfOrigin |
United States
→
|
| cycleType |
expander cycle
→
|
| developer |
Pratt & Whitney
→
|
| firstFlight |
1963
→
|
| fuel |
liquid hydrogen
→
|
| gimbalCapability |
yes
→
|
| heritage |
early U.S. hydrogen engine research programs
→
|
| laterDeveloper |
Aerojet Rocketdyne
→
|
| manufacturer |
Aerojet Rocketdyne
→
|
| notableFeature |
first liquid hydrogen rocket engine to fly
→
|
| notableUse |
Atlas V missions
→
Delta IV missions → historic Centaur missions → |
| oxidizer |
liquid oxygen
→
|
| propellantType |
liquid hydrogen
→
liquid oxygen → |
| propulsionType |
liquid-fueled rocket engine
→
|
| restartCapability |
multiple in-space restarts
→
|
| specificImpulseVacuum |
approximately 450 seconds
→
|
| status |
operational
→
|
| technology |
hydrogen-oxygen cryogenic technology
→
|
| thrustVacuum |
approximately 110 kN
→
|
| usedBy |
NASA
→
U.S. Department of Defense → United Launch Alliance → |
| usedFor |
interplanetary injection
→
orbital insertion → trans-lunar injection → upper stage propulsion → |
| usedOn |
Atlas V Centaur upper stage
→
Centaur upper stage → Delta IV upper stage → Saturn I upper stage → Saturn IB upper stage → Vulcan Centaur upper stage → |
| variant |
RL10A-3
→
RL10A-4 → RL10A-4-2 → RL10B-2 → RL10C-1 → RL10C-2 → |
Referenced by (7)
| Subject (surface form when different) | Predicate |
|---|---|
|
Centaur
→
Exploration Upper Stage ("RL10C-3") → |
engineType |
|
Interim Cryogenic Propulsion Stage
("RL10B-2")
→
|
engine |
|
Aerojet Rocketdyne
("RL10 engine")
→
|
notableProduct |
|
Saturn I
("RL10A-3")
→
|
secondStageEngineType |
|
Atlas V 541
→
|
upperStageEngine |
|
Atlas-Centaur
→
|
upperStageEngineType |