Aichi Ha-70

Ha-70
DB 610 gearbox end, showing same two-engine arrangement
Type Piston X 2 inverted V12 aircraft engines
National origin Japan
Manufacturer Aichi Kokuki
First run 1945
Major applications Yokosuka R2Y
Developed from Aichi Atsuta

The Aichi Ha-70 was a compound engine composed of two 1,700 hp 12-cylinder liquid-cooled inverted V-12 Aichi Atsuta aircraft engines mounted to a common gearbox. The only aircraft powered by the Ha-70 was the Yokosuka R2Y, an Imperial Japanese Navy Air Service (IJNAS) prototype reconnaissance aircraft that was designed and built near the end of World War II.