The was an unsuccessful attempt by

Nakajima Aircraft Company The was a prominent Japanese aircraft manufacturer and aviation engine manufacturer throughout World War II. It continues as the car and aircraft manufacturer Subaru Corporation, Subaru. History The Nakajima Aircraft company was Japan's first ...

to meet a 1935 requirement issued by the Japanese government for a modern single-seat

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

fighter suitable to meet the needs of both the

Imperial Japanese Army Air Force The Imperial Japanese Army Air Service (IJAAS) or Imperial Japanese Army Air Force (IJAAF; ) was the Military aviation, aviation force of the Imperial Japanese Army (IJA). Its primary mission was to provide tactical close air support for ground ...

and

Imperial Japanese Navy Air Service The (IJNAS) was the air arm of the Imperial Japanese Navy (IJN). The organization was responsible for the operation of naval aircraft and the conduct of aerial warfare in the Pacific War. The Japanese military acquired its first aircraft in ...

Design and development

Development of the Ki-11 began as a private venture in 1934, based on a

wire file:Sample cross-section of high tension power (pylon) line.jpg, Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample d ...

-braced low-wing monoplane, inspired by the

Boeing P-26 Peashooter The Boeing P-26 "Peashooter" is the first American production all-metal fighter aircraft and the first pursuit monoplane to enter squadron service with the United States Army Air Corps. Designed and built by Boeing, the prototype first flew in 1 ...

. The

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

wing center section and undercarriage were constructed in

duralumin Duralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age hardening, age-hardenable aluminium–copper alloys. The term is a combination of ''Düren'' and ''aluminium'' ...

, while the wings and tail were of wood and canvas. The aircraft was powered by a single

Nakajima Kotobuki The Nakajima Ha1 Kotobuki (寿, "Longevity") was an aero-engine developed by Nakajima. It was a radial piston developed under licence from the Bristol Jupiter. Design and development In 1917, Chikuhei Nakajima set up the "Airplane Institute" a ...

Ha-1-3

radial engine The radial engine is a reciprocating engine, reciprocating type internal combustion engine, internal combustion engine configuration in which the cylinder (engine), cylinders "radiate" outward from a central crankcase like the spokes of a wheel. ...

. Proposed armament consisted of twin 7.7 mm (.303 in) machine guns firing from between the engine cylinders. The Ki-11 was entered into competition with the

Kawasaki Ki-10 The was the last biplane Fighter aircraft, fighter used by the Imperial Japanese Army, entering service in 1935 in aviation, 1935. Built by Kawasaki Aerospace Company, Kawasaki Kōkūki Kōgyō K.K. for the Imperial Japanese Army, it saw combat ...

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

design. Although technically more advanced and faster than the Kawasaki design, the

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

command was split between supporters of "maneuverability" and supporters of "speed". The supporters of the "maneuverability" scheme won, and the Ki-10 became the main army fighter until 1937. Nakajima continued to refine the Ki-11 design, and it re-emerged in the form of the

Nakajima Ki-27 The was the main fighter aircraft used by the Imperial Japanese Army Air Service up until 1940. Its Allies of World War II, Allied World War II Allied names for Japanese aircraft, nickname was "Nate", although it was called "Abdul" in the China ...

"Nate" several years later. Nakajima later sold the fourth prototype as AN-1 Communications Aircraft to the ''

Asahi Shimbun is a Japanese daily newspaper founded in 1879. It is one of the oldest newspapers in Japan and Asia, and is considered a newspaper of record for Japan. The ''Asahi Shimbun'' is one of the five largest newspapers in Japan along with the ''Yom ...

'' newspaper, who registered it as J-BBHA and used it as a

liaison Liaison or Liaisons may refer to: General usage * Affair, an unfaithful sexual relationship * Collaboration * Co-operation * Liaison, an egg-based thickening used in cooking Arts and entertainment * Liaisons (''Desperate Housewives''), a 2007 ...

and courier plane, and for

reconnaissance In military operations, military reconnaissance () or scouting is the exploration of an area by military forces to obtain information about enemy forces, the terrain, and civil activities in the area of operations. In military jargon, reconnai ...

and news-gathering flights.

Variants

* Nakajima Ki-11 : initial prototype (4 built); #4 with enclosed

cockpit A cockpit or flight deck is the area, on the front part of an aircraft, spacecraft, or submersible, from which a pilot controls the vehicle. The cockpit of an aircraft contains flight instruments on an instrument panel, and the controls th ...

Operators

*''

Specifications (Ki-11)

References

Citations

Bibliography

* * * * *

External links

Russian site
{{Japanese Army Aircraft Designation System Low-wing aircraft Ki-11, Nakajima 1930s Japanese experimental aircraft Abandoned military aircraft projects of Japan Ki-011 Single-engined tractor aircraft