The Kawasaki Ki-60 was a Japanese World War 2 fighter aircraft that used a license-built DB 601 liquid-cooled engine. The majority of Japanese aircraft at that time used air-cooled radial engines. A total of three Ki-60s were built in 1941. Although the aircraft’s performance was improved somewhat, test pilots still had a negative reaction to the model and it was abandoned in favour of the Ki-61.
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