Kawasaki Ki-78
| Industry | Aerospace manufacturing |
|---|---|
| Headquarters | Japan |
| Products | Aircraft |
The Kawasaki Ki-78, originally known as Ken III (Kensan - research III), was a high-velocity experimental aircraft developed after investigations into long-distance and high-altitude flight designs. It was also created with the goal of attempting to surpass the global absolute speed record.
Design and development
The Ki-78 was conceived to explore laminar flow wing characteristics under conditions of elevated wing loading. In early 1938, the Aeronautical Research Institute of the University of Tokyo initiated a program focused on high-speed research involving a compact, single-seat aircraft.
This aircraft, designed by the Aeronautical Research Institute and constructed by Kawasaki Kokuki Kogyo K.K., sought to examine aerodynamic performance at very high velocities. Its design incorporated a streamlined fuselage with a minimal cross-sectional area, powered by a license-produced Daimler-Benz DB 601A engine. Temporary power enhancement was provided through methanol/water injection, while cooling efficiency was improved using a 60 hp turbine-driven fan dedicated to radiator airflow.
The structure was entirely metal, featuring a small, thin wing shaped with a laminar flow airfoil and a sharply defined leading edge.
Operational history
At the onset of World War II, the Imperial Japanese Army assumed control of the project, assigning it the designation Ki-78. Kawasaki received orders to manufacture two prototypes, initiating construction in September 1941. The first prototype reached completion more than a year later and conducted its maiden flight on 26 December 1942. Subsequent evaluations revealed that significant alterations to the airframe were necessary to enhance its capabilities, resulting in the cancellation of the program following the 32nd flight on 11 January 1944; the second prototype remained unfinished.
See also
Further reading
- Air Pictorial: 489. December 1986.