NK-33 engine
E443694
The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
All labels observed (2)
| Label | Occurrences |
|---|---|
| NK-33 | 1 |
| NK-33 engine canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4389277 — 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: NK-33 engine Context triple: [RP-1, usedInEngine, NK-33 engine]
-
A.
RS-68 engine
The RS-68 engine is a powerful liquid-fueled rocket engine used primarily on the Delta IV launch vehicle, known for its high thrust and simplified design for cost-effective heavy-lift missions.
-
B.
Raptor engine
The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
-
C.
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.
-
D.
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.
-
E.
Curtiss-Wright XLR25 rocket engine
The Curtiss-Wright XLR25 was an American liquid-fueled rocket engine developed in the 1950s to power high-speed experimental research aircraft such as the Bell X-2.
- 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: NK-33 engine Target entity description: The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
-
A.
RS-68 engine
The RS-68 engine is a powerful liquid-fueled rocket engine used primarily on the Delta IV launch vehicle, known for its high thrust and simplified design for cost-effective heavy-lift missions.
-
B.
Raptor engine
The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
-
C.
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.
-
D.
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.
-
E.
Curtiss-Wright XLR25 rocket engine
The Curtiss-Wright XLR25 was an American liquid-fueled rocket engine developed in the 1950s to power high-speed experimental research aircraft such as the Bell X-2.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
liquid-fuel rocket engine
ⓘ
rocket engine ⓘ |
| application | first-stage propulsion ⓘ |
| chamberPressure_bar | ~147 ⓘ |
| combustionMode | oxygen-rich ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| cycleType | oxygen-rich staged combustion ⓘ |
| derivative | AJ26 ⓘ |
| designer | Nikolai Kuznetsov ⓘ |
| developmentPeriod | 1960s ⓘ |
| engineType | open-cycle staged combustion (oxygen-rich) ⓘ |
| era | Soviet era ⓘ |
| exportVersion | AJ26 ⓘ |
| firstFlightUse | N1 test flights ⓘ |
| fuel | RP-1 kerosene ⓘ |
| gimbalRange_deg | about 5 ⓘ |
| heritageFrom | N1 first-stage propulsion system ⓘ |
| intendedForVehicle |
N1 lunar rocket
ⓘ
linked to:
N1 lunar rocket program
|
| manufacturer | Kuznetsov Design Bureau ⓘ |
| mountingConfiguration | clustered on N1 first stage ⓘ |
| notableFeature |
high specific impulse for kerosene engine
ⓘ
high thrust-to-weight ratio ⓘ oxygen-rich staged combustion in kerosene engine ⓘ |
| nozzleType | bell nozzle ⓘ |
| numberOfCombustionChambers | 1 ⓘ |
| numberOfNozzles | 1 ⓘ |
| oxidizer | liquid oxygen ⓘ |
| program |
N1-L3 lunar program
ⓘ
linked to:
N1 lunar rocket program
|
| propellantFeedSystem | turbopump-fed ⓘ |
| propellantType | liquid oxygen / RP-1 ⓘ |
| restartCapability | single-start ⓘ |
| specificImpulseSeaLevel_s | ~297 ⓘ |
| specificImpulseVacuum_s | ~331 ⓘ |
| status |
heritage engine
ⓘ
in service ⓘ |
| storageHistory | long-term storage after N1 cancellation ⓘ |
| successorInFamily | NK-33A ⓘ |
| throttleCapability | limited ⓘ |
| thrustSeaLevel_kN | ~1500 ⓘ |
| thrustToWeightRatio | high ⓘ |
| thrustVacuum_kN | ~1715 ⓘ |
| usedBy |
Orbital Sciences Corporation
ⓘ
Russian space program ⓘ
linked to:
Russian Federal Space Program
Soviet space program ⓘ |
| usedFor | orbital launch vehicles ⓘ |
| usedOnVehicle |
Antares 100 series
ⓘ
linked to:
Antares
Soyuz-2-1v ⓘ
linked to:
Soyuz rocket
|
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: NK-33 engine Description of subject: The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NK-33 engine