Mitsubishi Ha-104 radial engine
E243002
The Mitsubishi Ha-104 was a Japanese World War II-era twin-row, 18-cylinder air-cooled radial aircraft engine used to power several Imperial Japanese Army bombers and other combat aircraft.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mitsubishi Ha-104 radial engine canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2177873 — 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: Mitsubishi Ha-104 radial engine Context triple: [Mitsubishi Ki-67, engineType, Mitsubishi Ha-104 radial engine]
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A.
Nakajima Ha-25 radial engine
The Nakajima Ha-25 was a Japanese air-cooled radial aircraft engine widely used in World War II fighters, noted for its reliability and compact design.
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B.
Nakajima Ha-1b radial engine
The Nakajima Ha-1b was a Japanese air-cooled radial aircraft engine used in pre–World War II and early-war fighters such as the Nakajima Ki-27.
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C.
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.
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D.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
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E.
Bristol Hercules radial engine
The Bristol Hercules radial engine was a British air-cooled, sleeve-valve aircraft engine widely used in World War II bombers and other military aircraft for its reliability and high power output.
- 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: Mitsubishi Ha-104 radial engine Target entity description: The Mitsubishi Ha-104 was a Japanese World War II-era twin-row, 18-cylinder air-cooled radial aircraft engine used to power several Imperial Japanese Army bombers and other combat aircraft.
-
A.
Nakajima Ha-25 radial engine
The Nakajima Ha-25 was a Japanese air-cooled radial aircraft engine widely used in World War II fighters, noted for its reliability and compact design.
-
B.
Nakajima Ha-1b radial engine
The Nakajima Ha-1b was a Japanese air-cooled radial aircraft engine used in pre–World War II and early-war fighters such as the Nakajima Ki-27.
-
C.
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.
-
D.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
E.
Bristol Hercules radial engine
The Bristol Hercules radial engine was a British air-cooled, sleeve-valve aircraft engine widely used in World War II bombers and other military aircraft for its reliability and high power output.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
World War II-era aircraft engine
ⓘ
aircraft engine ⓘ piston engine ⓘ radial engine ⓘ |
| alsoKnownAs | Army Type 4 1,900 hp Air-cooled Radial Engine ⓘ |
| application |
bomber aircraft
ⓘ
combat aircraft ⓘ |
| configuration | twin-row radial ⓘ |
| conflict |
World War II
ⓘ
surface form:
Second World War
|
| coolingSystem | air-cooled ⓘ |
| countryOfOrigin | Japan ⓘ |
| cylinderArrangement | two rows of nine cylinders ⓘ |
| designGoal | high-power compact radial engine ⓘ |
| era | World War II ⓘ |
| fuelSystem | carbureted ⓘ |
| fuelType | aviation gasoline ⓘ |
| manufacturer | Mitsubishi Heavy Industries ⓘ |
| numberOfCylinders | 18 ⓘ |
| powerOutputClass | approximately 1900 horsepower ⓘ |
| serviceBranch | Imperial Japanese Army ⓘ |
| successor | Mitsubishi Ha-104 Ru (turbocharged variant) ⓘ |
| supercharger | single-stage supercharged ⓘ |
| technologyLineage | developed from earlier Mitsubishi radial engines ⓘ |
| usedBy | Imperial Japanese Army Air Service ⓘ |
| usedFor |
heavy fighters
ⓘ
medium bombers ⓘ |
| usedInAircraft |
Kawasaki Ki-100
ⓘ
surface form:
Kawasaki Ki-100 (as Ha-112-II derivative family)
Kawasaki Ki-61 ⓘ
surface form:
Kawasaki Ki-61-II Hien
Mitsubishi Ki-67 ⓘ
surface form:
Mitsubishi Ki-67 Hiryu
other Imperial Japanese Army bombers ⓘ |
| usedInRole | powerplant for front-line combat aircraft ⓘ |
| valveType | overhead poppet valves ⓘ |
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: Mitsubishi Ha-104 radial engine Description of subject: The Mitsubishi Ha-104 was a Japanese World War II-era twin-row, 18-cylinder air-cooled radial aircraft engine used to power several Imperial Japanese Army bombers and other combat aircraft.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.