Tags: Aircraft.
The Kayaba Ku-4 was a research aircraft built in Japan in 1940 to investigate the possibilities of tailless designs. It followed designer Hidemasa Kimura’s successful Ku-2 and Ku-3 designs for the Imperial Japanese Army. While these previous aircraft had been gliders however the Ku-4 was to be a powered by a pusher engine. It had a low swept wing and like the Ku-2 fins at the wingtips.