Kawasaki KDC-2
| Industry | Aviation, Aircraft manufacturing |
|---|---|
| Founded | 1920s |
| Headquarters | Japan |
The Kawasaki KDC-2 was a Japanese light civil transport aircraft from the 1920s, developed by Kawasaki as an adaptation of its Kawasaki Army Type 88 Reconnaissance Aircraft. Two units were produced and entered service in 1928, operating on both scheduled and occasional routes until their retirement in 1935.
Design and development
During the 1920s, to encourage advancements in military and commercial aviation, the Imperial Maritime Defense Volunteer Association commissioned Kawasaki to construct two light passenger planes. These aircraft, derived from the Type 88 reconnaissance model, were intended for loan to the Asahi Shimbun newspaper to facilitate a Tokyo-Osaka air connection that necessitated floatplane capabilities for crossing water.
The KDC-2 was built with an all-metal framework covered in fabric, featuring single-bay biplane wings with a rectangular planform. Unlike the Type 88, it replaced the mid-span I-shaped interplane struts with N-shaped struts positioned between the wing spars, reflecting a design change that included a reduced upper wingspan and increased span and chord on the lower wing. The wing center-section was mounted to the fuselage using outward-angled N-form cabane struts. Ailerons equipped both upper and lower wings, linked externally.
Propulsion came from a water-cooled BMW VI V12 engine, with its radiator installed beneath the nose, driving a two-bladed propeller. The fuselage had flat sides and utilized Dornier-style stressed skin construction. The pilot's open cockpit was situated just behind the trailing edge of the upper wing, preceding an enclosed cabin accommodating four passengers, which could be configured for mail transport or photographic reconnaissance missions. The tail assembly retained the Type 88’s metal frame with fabric covering, featuring a truncated triangular fin and a rounded balanced rudder extending to the keel. The tailplane was mounted atop the fuselage with V-strut bracing and had rectangular elevators incorporating cut-outs for rudder movement.
Engineered for operational flexibility, the KDC-2 could function as a landplane equipped with fixed conventional landing gear—consisting of single-axle wheels mounted on partially faired legs attached to lower fuselage longerons—or as a floatplane, which required an enlarged rudder for enhanced water control.
Both aircraft were finalized by October 1928 and commenced service shortly thereafter.
Operational history
Initially, these planes were briefly utilized on the Tokyo-Osaka route by Tozo Teiki Kokuka (East-West Regular Air Transport Association) before Nihon Koku Yuso took over flights along this corridor. Subsequently, Asahi Shimbun arranged the All Japan City-Visiting Flight, conducting formation flights over numerous Japanese cities starting eastward in July 1929 and returning westward in October. These tours aimed to raise awareness about air transportation and promote aviation interest nationwide.
Following these promotional flights, both aircraft operated routine mail services between Tokyo and Niigata. Additionally, Asahi Shimbun employed them for passenger and cargo carriage, aerial photography assignments, and courier missions into Manchuria during the September 1931 Manchurian Incident.
The first KDC-2 suffered significant damage during a water take-off accident in September 1930; repairs required one year to complete. In June 1932, it incurred further damage during a landing mishap and was subsequently retired from use. The second unit resumed passenger operations on routes connecting Tokyo with Toyama and Sendai, remaining active until April 1935 after accumulating 723 flight hours. It later served as a training airframe for the Student's Aviation League.
Operators
- Asahi Shimbun newspaper organization
- Tozo Teiki Kokukai airline company