Yokosuka E5Y - version overview
Yokosuka E5Y1 Kai 1C
First prototype produced in August 1928, a twin-float aircraft that passed sea trials.
Yokosuka E5Y1 Kai 1D
Built two prototypes with wheeled landing gear.
Yokosuka E5Y1 Kai 3
Floatplane powered by the Jupiter IX engine, seventeen aircraft built in total
Brief history:
In the late 1920s, the Kaigun Koku Hombu requested a new floatplane reconnaissance three-seat aircraft that would operate from larger warships or on seaplane carriers. The new aircraft was to have higher performance than the Yokosho E1Y2.
The Naval Arsenal at Yokosuka (Dai-Ichi Kaigun Koku Gijitsusho) completed a prototype in August 1928, which the Navy adopted as the "Experimental Floatplane Reconnaissance Type 14-2 Kai 1" or E5Y1 Kai 1 for short C. The designers at Dai-Ichi Kaigun Koku Gijitsusho stuck to the older aircraft in designing the new aircraft E1Y, which was based on the German Heinkel HD-28, the new prototype was powered by a Lorraine-Dietrich 2 inline twelve-cylinder engine with cylinders up to W. At the time the first prototype was undergoing trials, two prototypes with fixed-wheel landing gear had been built, these machines were powered by identical Lorraine engines of 450 hp.
The floatplane was accepted into service following successful trials, and further production and possible further development was to be handled by the Kawanishi Kokuki K factory. K. in Nauru. Kawanishi designers made several changes which led to the aircraft being redesignated Kawanishi E5K1 Type 90-3. The most significant change was an engine change, the aircraft was powered by a licensed Jupiter VIII radial nine-cylinder engine.
However, the Naval Arsenal produced the same number of floatplane reconnaissance aircraft as the Kawanishi factory produced (both 17 aircraft each). The machines built in Yokosuka were powered by Jupiter IX engines and retained the designation E5Y1 Kai 3. Both types served together on the Notoro seaplane carrier and aboard cruisers, taking part in combat during the Shanghai Incident.
Sources used:
Robert C. Mikesh and Shorzoe Abe, Japanese Aircraft 1910-1941, Naval Institute Press, Annapolis, 1990, ISBN: 1557505632
Tadeusz Januszewski and Kryzysztof Zalewski, Japanese Naval Aircraft 1912-1945, vol. 1, Lampart, year 2000, ISBN: 83-86776-50-1
author's archive
Yokosuka E5Y1 Kai 1C
First prototype produced in August 1928, a twin-float aircraft that passed sea trials.
Yokosuka E5Y1 Kai 1D
Built two prototypes with wheeled landing gear.
Yokosuka E5Y1 Kai 3
Floatplane powered by the Jupiter IX engine, seventeen aircraft built in total
Brief history:
In the late 1920s, the Kaigun Koku Hombu requested a new floatplane reconnaissance three-seat aircraft that would operate from larger warships or on seaplane carriers. The new aircraft was to have higher performance than the Yokosho E1Y2.
The Naval Arsenal at Yokosuka (Dai-Ichi Kaigun Koku Gijitsusho) completed a prototype in August 1928, which the Navy adopted as the "Experimental Floatplane Reconnaissance Type 14-2 Kai 1" or E5Y1 Kai 1 for short C. The designers at Dai-Ichi Kaigun Koku Gijitsusho stuck to the older aircraft in designing the new aircraft E1Y, which was based on the German Heinkel HD-28, the new prototype was powered by a Lorraine-Dietrich 2 inline twelve-cylinder engine with cylinders up to W. At the time the first prototype was undergoing trials, two prototypes with fixed-wheel landing gear had been built, these machines were powered by identical Lorraine engines of 450 hp.
The floatplane was accepted into service following successful trials, and further production and possible further development was to be handled by the Kawanishi Kokuki K factory. K. in Nauru. Kawanishi designers made several changes which led to the aircraft being redesignated Kawanishi E5K1 Type 90-3. The most significant change was an engine change, the aircraft was powered by a licensed Jupiter VIII radial nine-cylinder engine.
However, the Naval Arsenal produced the same number of floatplane reconnaissance aircraft as the Kawanishi factory produced (both 17 aircraft each). The machines built in Yokosuka were powered by Jupiter IX engines and retained the designation E5Y1 Kai 3. Both types served together on the Notoro seaplane carrier and aboard cruisers, taking part in combat during the Shanghai Incident.
Sources used:
Robert C. Mikesh and Shorzoe Abe, Japanese Aircraft 1910-1941, Naval Institute Press, Annapolis, 1990, ISBN: 1557505632
Tadeusz Januszewski and Kryzysztof Zalewski, Japanese Naval Aircraft 1912-1945, vol. 1, Lampart, year 2000, ISBN: 83-86776-50-1
author's archive