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The Kawasaki Ki-28 (キ28, Ki-Nijuhachi), World War II Allied reporting name "Bob",[1] was an experimental fighter aircraft designed for the Imperial Japanese Army and meant as a replacement for the Kawasaki Ki-10. It flew in 1936, but was never produced for actual use as the Army chose the Nakajima Ki-27.

Ki-28
The sole prototype of the Kawasaki Ki-28
Role Experimental Fighter Aircraft
Manufacturer Kawasaki Kōkūki Kōgyō K.K.
Designer Takeo Doi
First flight 1936
Primary user IJA Air Force
Number built 1

Design & Development


The Ki-28 was initially produced by Kawasaki Kōkūki Kōgyō K.K. in response to Japanese army specifications for a fighter to replace the existing Kawasaki Ki-10. In mid-1935, Kawasaki, Mitsubishi and Nakajima were instructed to build competitive prototypes. The Kawasaki design was based on its earlier, but unsuccessful Ki-5. It was a low-wing cantilever monoplane of all-metal construction, except for fabric-covered control surfaces, with a conventional tail unit, fixed tailskid landing gear and powered by a 596 kW (800 hp) Kawasaki Ha 9-II-Ko liquid-cooled inline V12 engine.[2]

Service trials proved that the Kawasaki Ki-28 was the fastest of the three contenders, but the Nakajima Ki-27 was by far the most maneuverable and had the lowest wing-loading, and on this basis was selected by the Imperial Japanese Army Air Force.[3] Despite losing to the Ki-27, the Ki-28 provided Kawasaki with valuable experience which would later help with development of the Kawasaki Ki-60 and Kawasaki Ki-61 fighters.[2]

Mistakenly believing the Ki-28 to have entered production in Japan as the Army Type 97 Fighter, the Allies assigned it the reporting name "Bob" during World War II.[1]


Operators



Military operators


 Japan

Specifications


Data from Famous Aircraft of the World, no.76: Japanese Army Experimental Fighters (1),[4] Japanese Aircraft, 1910-1941[5]

General characteristics

Performance

Armament


See also


Related lists


References


  1. Francillon, p. 566.
  2. Mikesh and ABe 1990, p. 157.
  3. Wieliczko and Szeremeta 2004, pp. 17–19.
  4. FAOW 1976, p. 2.
  5. Mikesh and Abe 1990, p. 158.

Further reading



На других языках


- [en] Kawasaki Ki-28

[it] Kawasaki Ki-28

Il Kawasaki Ki-28 (川崎 キ28 Kawasaki ki nijūhachi?), nome in codice alleato Bob[2] era un caccia monomotore monoplano ad ala bassa sviluppato dall'azienda aeronautica giapponese Kawasaki Kōkūki Kōgyō KK negli anni trenta e rimasto allo stadio di prototipo.



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