Nakajima Homare radial engine

E753069

air-cooled engine aircraft engine

The Nakajima Homare was a powerful Japanese air-cooled radial aircraft engine used in several late-World War II Imperial Japanese Navy and Army fighters.

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All labels observed (3)

Label	Occurrences
Nakajima Homare radial engine canonical	3
1 × Nakajima NK9B Homare 11 radial engine	1
Nakajima Homare 21 radial engine	1

How this entity was disambiguated

This entity first appeared as the object of triple T8725763 — 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: Nakajima Homare radial engine
Context triple: [Kawanishi N1K, engineType, Nakajima Homare radial engine]

A. 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.
B. Nakajima Mamoru 11 radial engine
The Nakajima Mamoru 11 was a Japanese air-cooled radial aircraft engine developed during World War II to power carrier-based aircraft such as the B6N Tenzan torpedo bomber.
C. Nakajima Ha-5 radial engine
The Nakajima Ha-5 was a Japanese air-cooled radial aircraft engine of the 1930s, used to power several early World War II Imperial Japanese Army bombers and transports.
D. 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.
E. 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.
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: Nakajima Homare radial engine
Target entity description: The Nakajima Homare was a powerful Japanese air-cooled radial aircraft engine used in several late-World War II Imperial Japanese Navy and Army fighters.

A. 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.
B. Nakajima Mamoru 11 radial engine
The Nakajima Mamoru 11 was a Japanese air-cooled radial aircraft engine developed during World War II to power carrier-based aircraft such as the B6N Tenzan torpedo bomber.
C. Nakajima Ha-5 radial engine
The Nakajima Ha-5 was a Japanese air-cooled radial aircraft engine of the 1930s, used to power several early World War II Imperial Japanese Army bombers and transports.
D. 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.
E. 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.
F. None of above. chosen

Statements (41)

Predicate	Object
instanceOf	air-cooled engine ⓘ aircraft engine ⓘ
alsoKnownAs	Ha-45 ⓘ Nakajima NK9 ⓘ
application	dive bomber ⓘ fighter aircraft ⓘ reconnaissance aircraft ⓘ torpedo bomber ⓘ
configuration	18-cylinder radial ⓘ
coolingSystem	air-cooled ⓘ
countryOfOrigin	Japan ⓘ
cylinderArrangement	two-row radial ⓘ
designGoal	compact high-power engine for carrier fighters ⓘ
developedFrom	Nakajima Sakae ⓘ
era	late World War II ⓘ
fuelType	aviation gasoline ⓘ
historicalRole	main late-war high-output Japanese radial engine ⓘ
introducedInDecade	1940s ⓘ
manufacturer	Nakajima Aircraft Company ⓘ
notableFor	high power-to-weight ratio ⓘ mechanical complexity ⓘ reliability problems in service ⓘ
powerOutputClass	approximately 1800–2000 horsepower ⓘ
productionStatus	mass-produced during World War II ⓘ
serviceBranch	army aviation ⓘ naval aviation ⓘ
successor	postwar Japanese radial engine designs influenced by its layout ⓘ
supercharger	single-stage supercharger ⓘ
usedBy	Axis powers (Japan) ⓘ linked to: Armed Forces of the Empire of Japan Imperial Japanese Army Air Service ⓘ Imperial Japanese Navy ⓘ
usedInAircraft	Aichi B7A Ryusei ⓘ linked to: Aichi B7A Kawanishi N1K-J Shiden ⓘ linked to: Kawanishi N1K Kawanishi N1K2-J Shiden-Kai ⓘ linked to: Kawanishi N1K Kawasaki Ki-100 (early prototypes / testbeds) ⓘ linked to: Kawasaki Ki-100 Mitsubishi A7M (some prototypes) ⓘ linked to: Mitsubishi A7M Reppū design Nakajima C6N Saiun ⓘ linked to: Nakajima C6N Nakajima Ki-84 Hayate ⓘ linked to: Nakajima Ki-84 Yokosuka P1Y Ginga ⓘ linked to: Yokosuka P1Y
usedInConflict	World War II ⓘ
valvetrain	poppet valves ⓘ

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Kawanishi N1K → engineType → Nakajima Homare radial engine ⓘ

Nakajima C6N → engineType → Nakajima Homare radial engine ⓘ

Nakajima C6N → powerplant → 1 × Nakajima NK9B Homare 11 radial engine ⓘ

linked to: Nakajima Homare radial engine

Ryusei → engineType → Nakajima Homare radial engine ⓘ

Saiun → engineType → Nakajima Homare 21 radial engine ⓘ