Ishikawajima Tsu-11
The Ishikawajima Tsu-11 was a motorjet produced in small numbers in Japan in the closing stages of World War II. It was principally designed to propel the Japanese Yokosuka MXY7 Ohka flying bomb, a kamikaze weapon. == Design and development == The Tsu-11 used a four-cylinder inverted inline Hitachi Hatsukaze Toku Model 13 piston engine — a license-built version of the German Hirth HM 504 inverted, inline-four cylinder air-cooled engine, with the "model 13" version indicating its adaptation to drive a single-stage compressor.