Delta Cryogenic Second Stage
E846509
The Delta Cryogenic Second Stage is a liquid hydrogen–liquid oxygen upper stage used on Delta IV rockets to provide high-efficiency propulsion for orbital insertion and mission maneuvers.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Delta Cryogenic Second Stage canonical | 3 |
| Delta Cryogenic Second Stage derivative | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10183735 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Delta Cryogenic Second Stage Context triple: [Delta IV Heavy, upperStageName, Delta Cryogenic Second Stage]
-
A.
CE-20 cryogenic engine
The CE-20 cryogenic engine is an Indian-developed, liquid hydrogen–liquid oxygen rocket engine that powers the upper stage of ISRO’s heaviest launch vehicles for placing large payloads into orbit.
-
B.
Titan II second stage
The Titan II second stage was the upper propulsion segment of the Titan II launch vehicle used during the Gemini program, serving as the spent target object for early U.S. crewed orbital rendezvous attempts.
-
C.
Interim Cryogenic Propulsion Stage
The Interim Cryogenic Propulsion Stage is a liquid hydrogen–liquid oxygen upper stage used on early NASA Space Launch System missions to provide orbital insertion and translunar injection capability before the introduction of a more powerful exploration upper stage.
-
D.
Centaur upper stage
The Centaur upper stage is a high-energy rocket stage developed by the United States that pioneered the use of liquid hydrogen and liquid oxygen propellants to boost payloads from low Earth orbit to higher orbits and interplanetary trajectories.
-
E.
Walter rocket engine
The Walter rocket engine was a German World War II-era liquid-fuel rocket propulsion system, best known for powering the Messerschmitt Me 163 Komet interceptor and pioneering high-thrust, short-duration flight technology.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Delta Cryogenic Second Stage Target entity description: The Delta Cryogenic Second Stage is a liquid hydrogen–liquid oxygen upper stage used on Delta IV rockets to provide high-efficiency propulsion for orbital insertion and mission maneuvers.
-
A.
CE-20 cryogenic engine
The CE-20 cryogenic engine is an Indian-developed, liquid hydrogen–liquid oxygen rocket engine that powers the upper stage of ISRO’s heaviest launch vehicles for placing large payloads into orbit.
-
B.
Titan II second stage
The Titan II second stage was the upper propulsion segment of the Titan II launch vehicle used during the Gemini program, serving as the spent target object for early U.S. crewed orbital rendezvous attempts.
-
C.
Interim Cryogenic Propulsion Stage
The Interim Cryogenic Propulsion Stage is a liquid hydrogen–liquid oxygen upper stage used on early NASA Space Launch System missions to provide orbital insertion and translunar injection capability before the introduction of a more powerful exploration upper stage.
-
D.
Centaur upper stage
The Centaur upper stage is a high-energy rocket stage developed by the United States that pioneered the use of liquid hydrogen and liquid oxygen propellants to boost payloads from low Earth orbit to higher orbits and interplanetary trajectories.
-
E.
Walter rocket engine
The Walter rocket engine was a German World War II-era liquid-fuel rocket propulsion system, best known for powering the Messerschmitt Me 163 Komet interceptor and pioneering high-thrust, short-duration flight technology.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cryogenic rocket stage
ⓘ
rocket upper stage ⓘ spacecraft propulsion system ⓘ |
| attitudeControl | reaction control system ⓘ |
| capableOf |
direct geostationary orbit insertion
ⓘ
escape trajectory injection ⓘ geostationary transfer orbit insertion ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| engine | Pratt & Whitney RL10B-2 NERFINISHED ⓘ |
| engineGimbal | gimbaled for thrust vector control ⓘ |
| engineNozzle | extendable carbon-carbon nozzle ⓘ |
| engineType | expander cycle ⓘ |
| fairingInterface | Delta IV payload fairing ⓘ |
| family | Delta rocket family NERFINISHED ⓘ |
| fuelTank | liquid hydrogen tank ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| insulation | external foam insulation ⓘ |
| introducedWith | Delta IV launch system NERFINISHED ⓘ |
| launchSiteCompatibility |
Cape Canaveral Space Force Station
NERFINISHED
ⓘ
Vandenberg Space Force Base NERFINISHED ⓘ |
| manufacturer |
Boeing
ⓘ
United Launch Alliance NERFINISHED ⓘ |
| missionRole | high-energy upper stage ⓘ |
| operator | United Launch Alliance NERFINISHED ⓘ |
| oxidizerTank | liquid oxygen tank ⓘ |
| oxidizerToFuelRatio | approximately 5.5:1 ⓘ |
| primaryFunction | orbital insertion ⓘ |
| propellant |
liquid hydrogen
ⓘ
liquid oxygen ⓘ |
| propulsionType | cryogenic ⓘ |
| restartCapability | multiple restarts ⓘ |
| secondaryFunction |
orbit circularization
ⓘ
payload deployment maneuvers ⓘ transfer orbit maneuvers ⓘ |
| specificImpulseVacuum | about 462 s ⓘ |
| status | operational ⓘ |
| successorTo | Delta II second stage NERFINISHED ⓘ |
| tankMaterial | aluminum-lithium alloy ⓘ |
| thrustVacuum | about 110 kN ⓘ |
| usedBy |
NASA
NERFINISHED
ⓘ
U.S. Department of Defense NERFINISHED ⓘ commercial satellite operators ⓘ |
| usedFor |
commercial satellite launches
ⓘ
government science missions ⓘ military payload launches ⓘ |
| usedOnLaunchVehicle |
Delta IV
NERFINISHED
ⓘ
Delta IV Heavy NERFINISHED ⓘ Delta IV Medium NERFINISHED ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Delta Cryogenic Second Stage Description of subject: The Delta Cryogenic Second Stage is a liquid hydrogen–liquid oxygen upper stage used on Delta IV rockets to provide high-efficiency propulsion for orbital insertion and mission maneuvers.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Delta Cryogenic Second Stage derivative