Nakajima Ki-12

Nakajima Aircraft · Japan · first flew 1936 · fighter

The Nakajima Ki-12 was an experimental Japanese Army fighter prototype of the mid-1930s designed with European design influences, featuring a retractable undercarriage and an inline liquid-cooled engine — an unusual configuration for Japanese fighters of the period.

Recognition (WEFT)

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Spot it by:

• Late 1930s Japanese experimental fighter with retractable undercarriage
• Elliptical low wing based on European contemporary design influences
• Never entered production — prototype only

A sleek low-wing monoplane with an inline engine and retractable undercarriage, resembling European fighters of its era more than Japanese contemporaries; no external stores or armament identification features.

Specifications

• The Nakajima Ki-12 has a length of 8.3 m (27 ft).
• It has a wingspan of 11 m (36 ft).
• Its maximum speed is 480 km/h (298 mph).
• Typical crew: 1.

Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.

History

Nakajima developed the Ki-12 in 1936 with technical assistance from French company Dewoitine, and a single prototype was built and tested. Despite demonstrating competitive performance, the Japanese Army preferred air-cooled radial engines and fixed undercarriage for reliability and simplicity, leading to the Ki-12 being rejected in favour of the competing Ki-10 biplane.

Variants

Only one prototype was built; no production variants were developed.

Where you'll see it

The Ki-12 never entered operational service, with the single prototype used only for evaluation. Its rejection foreshadowed Japan's continued preference for radial-engined fighters through World War II.

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