V-1650-3
E137751
The V-1650-3 is a high-performance variant of the Packard-built Rolls-Royce Merlin aircraft engine, best known for powering later models of the North American P-51 Mustang in World War II.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T1205402 — 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: V-1650-3 Context triple: [Packard V-1650, notableVariant, V-1650-3]
-
A.
OV-103
OV-103 is the NASA Space Shuttle orbiter better known as Discovery, which flew numerous important missions including the Hubble Space Telescope deployment and International Space Station assembly flights.
-
B.
Turbostar
Turbostar is a family of modern British diesel multiple-unit trains widely used for regional and commuter services across the UK rail network.
-
C.
Voyager KC2
Voyager KC2 is an Airbus A330-based multi-role tanker transport aircraft used by the Royal Air Force for air-to-air refuelling and strategic airlift operations.
-
D.
Titan IIIE
Titan IIIE was a U.S. expendable launch vehicle variant of the Titan III family, equipped with a Centaur upper stage and used in the 1970s to send deep-space probes such as Voyager 1 on interplanetary trajectories.
-
E.
BB-36
BB-36 is the hull classification symbol for USS Nevada, a U.S. Navy battleship notable for its service during both World Wars and survival of the Pearl Harbor attack.
- 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: V-1650-3 Target entity description: The V-1650-3 is a high-performance variant of the Packard-built Rolls-Royce Merlin aircraft engine, best known for powering later models of the North American P-51 Mustang in World War II.
-
A.
OV-103
OV-103 is the NASA Space Shuttle orbiter better known as Discovery, which flew numerous important missions including the Hubble Space Telescope deployment and International Space Station assembly flights.
-
B.
Turbostar
Turbostar is a family of modern British diesel multiple-unit trains widely used for regional and commuter services across the UK rail network.
-
C.
Voyager KC2
Voyager KC2 is an Airbus A330-based multi-role tanker transport aircraft used by the Royal Air Force for air-to-air refuelling and strategic airlift operations.
-
D.
Titan IIIE
Titan IIIE was a U.S. expendable launch vehicle variant of the Titan III family, equipped with a Centaur upper stage and used in the 1970s to send deep-space probes such as Voyager 1 on interplanetary trajectories.
-
E.
BB-36
BB-36 is the hull classification symbol for USS Nevada, a U.S. Navy battleship notable for its service during both World Wars and survival of the Pearl Harbor attack.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
liquid-cooled piston engine ⓘ |
| aircraftRoleSupported |
air superiority fighter
ⓘ
bomber escort ⓘ |
| applicationType | single-engine fighter ⓘ |
| basedOn | Rolls-Royce Merlin ⓘ |
| compressionRatio | approximately 6.0:1 ⓘ |
| configuration | V-12 ⓘ |
| conflict | World War II ⓘ |
| coolant | water-glycol mixture ⓘ |
| coolingSystem | liquid-cooled ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cylinderArrangement | 60-degree V ⓘ |
| cylinders | 12 ⓘ |
| derivedFrom |
Rolls-Royce Merlin
ⓘ
surface form:
Rolls-Royce Merlin 60-series
|
| designFeature |
intercooler for charge cooling
ⓘ
two-speed, two-stage supercharger ⓘ |
| designGoal | improved high-altitude performance over earlier Merlin variants ⓘ |
| displacement |
1649 cubic inches
ⓘ
27 litres ⓘ |
| era | 1940s ⓘ |
| family | Packard V-1650 ⓘ |
| fuelSystem | carbureted ⓘ |
| fuelType | aviation gasoline ⓘ |
| historicalSignificance | key engine in Allied air superiority over Europe ⓘ |
| ignitionSystem | dual magneto ignition ⓘ |
| manufacturer | Packard Motor Car Company ⓘ |
| notableAircraftTheater |
European Theater of Operations, United States Army
ⓘ
surface form:
European Theater of Operations
|
| notableFor |
enabling long-range escort capability of P-51 Mustang
ⓘ
high-altitude performance ⓘ |
| notableUser | United States Army Air Forces ⓘ |
| powerOutput |
approximately 1450 horsepower
ⓘ
approximately 1490 horsepower ⓘ |
| powerOutputCondition | takeoff power ⓘ |
| productionType | license-built Rolls-Royce design ⓘ |
| propellerDrive | reduction gear ⓘ |
| role | fighter aircraft engine ⓘ |
| serviceEntryPeriod | early 1940s ⓘ |
| supercharger | two-stage supercharger ⓘ |
| usedBy | Allied air forces ⓘ |
| usedIn |
North American P-51 Mustang
ⓘ
North American P-51 Mustang ⓘ
surface form:
P-51B Mustang
North American P-51 Mustang ⓘ
surface form:
P-51C Mustang
North American P-51 Mustang ⓘ
surface form:
P-51D Mustang
|
| valvesPerCylinder | 4 ⓘ |
| valvetrain | single overhead camshaft per bank ⓘ |
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: V-1650-3 Description of subject: The V-1650-3 is a high-performance variant of the Packard-built Rolls-Royce Merlin aircraft engine, best known for powering later models of the North American P-51 Mustang in World War II.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
V-1650-7