Fiat A.74 R1C.38 radial engine
E123497
The Fiat A.74 R1C.38 was an Italian air-cooled radial aircraft engine of the late 1930s widely used to power frontline Regia Aeronautica fighters in the early years of World War II.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Fiat A.74 R1C.38 radial engine canonical | 1 |
| Fiat A.74 RC.38 radial engine | 1 |
| Fiat A.74 engine | 1 |
| Fiat A.74 radial engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1087686 — 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: Fiat A.74 R1C.38 radial engine Context triple: [Fiat CR.42 Falco, powerplant, Fiat A.74 R1C.38 radial engine]
-
A.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
B.
Nakajima Sakae radial engine
The Nakajima Sakae radial engine was a widely used Japanese air-cooled aircraft engine of World War II, best known for powering frontline Imperial Japanese Navy and Army fighters and bombers such as the Mitsubishi A6M Zero.
-
C.
BMW 801 radial engine
The BMW 801 radial engine was a powerful German World War II air-cooled aircraft engine widely used in Luftwaffe fighters and bombers, noted for its reliability and advanced engineering.
-
D.
Wright R-3350 Duplex-Cyclone radial engine
The Wright R-3350 Duplex-Cyclone is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II and early postwar bombers and airliners.
-
E.
Junkers Jumo 004 turbojet engine
The Junkers Jumo 004 was the world’s first mass-produced turbojet engine, powering Germany’s pioneering jet aircraft during World War II.
- 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: Fiat A.74 R1C.38 radial engine Target entity description: The Fiat A.74 R1C.38 was an Italian air-cooled radial aircraft engine of the late 1930s widely used to power frontline Regia Aeronautica fighters in the early years of World War II.
-
A.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
B.
Nakajima Sakae radial engine
The Nakajima Sakae radial engine was a widely used Japanese air-cooled aircraft engine of World War II, best known for powering frontline Imperial Japanese Navy and Army fighters and bombers such as the Mitsubishi A6M Zero.
-
C.
BMW 801 radial engine
The BMW 801 radial engine was a powerful German World War II air-cooled aircraft engine widely used in Luftwaffe fighters and bombers, noted for its reliability and advanced engineering.
-
D.
Wright R-3350 Duplex-Cyclone radial engine
The Wright R-3350 Duplex-Cyclone is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II and early postwar bombers and airliners.
-
E.
Junkers Jumo 004 turbojet engine
The Junkers Jumo 004 was the world’s first mass-produced turbojet engine, powering Germany’s pioneering jet aircraft during World War II.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
piston engine ⓘ radial engine ⓘ |
| application | frontline fighters ⓘ |
| bore | 125 mm ⓘ |
| configuration | radial ⓘ |
| coolingSystem | air-cooled ⓘ |
| countryOfOrigin | Italy ⓘ |
| cylinderArrangement | two-row radial ⓘ |
| designLineage | derived from earlier Fiat radial engines ⓘ |
| displacement | about 31.25 L ⓘ |
| era | late 1930s ⓘ |
| fuelType | aviation gasoline ⓘ |
| historicalSignificance | one of the most widely used Italian radial engines at the start of WWII ⓘ |
| ignitionSystem | dual ignition ⓘ |
| manufacturer | Fiat ⓘ |
| notableFeature | reliable frontline fighter engine for early WWII Italian aircraft ⓘ |
| numberOfCylinders | 14 ⓘ |
| powerOutput |
approximately 626 kW
ⓘ
approximately 840 hp ⓘ |
| primaryRole | fighter aircraft powerplant ⓘ |
| productionPeriod | late 1930s ⓘ |
| propellerDrive | reduction gear ⓘ |
| serviceEntry | circa 1938 ⓘ |
| stroke | 140 mm ⓘ |
| successorEngine |
Fiat A.80
ⓘ
Fiat A.80 ⓘ
surface form:
Fiat A.82
|
| supercharging | single-stage supercharger ⓘ |
| usedBy | Regia Aeronautica ⓘ |
| usedByAirForce |
Regia Aeronautica
ⓘ
surface form:
Italian Royal Air Force
|
| usedInConflict | World War II ⓘ |
| usedInRole |
fighter
ⓘ
light bomber ⓘ reconnaissance aircraft ⓘ |
| usedOnAircraft |
Caproni Ca.310
ⓘ
Caproni Ca.310 ⓘ
surface form:
Caproni Ca.311
Caproni Ca.313 ⓘ
surface form:
Caproni Ca.312
Fiat CR.42 Falco ⓘ Fiat G.50 Freccia ⓘ Macchi C.200 Saetta ⓘ Savoia-Marchetti SM.79 Sparviero ⓘ
surface form:
Savoia-Marchetti SM.79 (some variants)
|
| valvetrain | two valves per cylinder ⓘ |
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: Fiat A.74 R1C.38 radial engine Description of subject: The Fiat A.74 R1C.38 was an Italian air-cooled radial aircraft engine of the late 1930s widely used to power frontline Regia Aeronautica fighters in the early years of World War II.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fiat A.74 RC.38 radial engine
this entity surface form:
Fiat A.74 engine
this entity surface form:
Fiat A.74 radial engine