Yokosuka E5Y

In 1928, the Imperial fleet of Japan formed a technical task for the development of new long-range and short-range reconnaissance seaplanes to replace the outdated Yokosuka E1Y and Nakajima E2N, respectively.

Aichi took German Heinkel HD 28 as a base. This all-metal aircraft had a mass of 4 tons, and the Lorraine 18F Sirius engine was flawed. Therefore, the fleet rejected this project.

The fleet arsenal in Yokosuka decided to modernize the E1Y2 . The fuselage frame was changed to metal, the wing frame remained wooden. The aircraft was installed engine Bristol Jupiter VIII , the licensed production of which established the company Nakajima . The plane was armed with four 7.7-mm machine guns: two fixed synchronous front, one on the turret in the rear cockpit, and one in the lower hatch. The aircraft could carry up to 250 kg of bombs.

In 1931, the aircraft was put into service under the name Marine Type 90-3 (or E5Y1 ) reconnaissance seaplane . Machines produced in the factories of the company Kawanishi . In 1931, 5 cars were built, in 1932 - another 12. But the fleet was disappointed in the new aircraft, which in no way exceeded the E1Y2, but had a shorter range and worse handling. At Kawanishi, the aircraft was modified by installing the Hiro Type 91-1 engine with a power of 620 hp. The aircraft received the designation E5K . It was built 17 cars. But replacing the engine did not improve the flight characteristics, and the fleet ordered the release of a modified E1Y3 aircraft to Aichi.

Aircraft E5Y located on the battleship Hyuga , Ise , Fuso and Yamashiro , as well as on the hydroplane aircraft carrier Notoro . They took part in the 1932 Shanghai incident . Their actions were advertised by the Japanese press, in particular, the presence in China of two aircraft, built on private donations. But soon these planes were withdrawn from combat units.

Specifications

• Crew : 3
• Length : 10.81 m
• Wing Span : 14.46 m
• Height : 4.74 m
• Wing area: 55.00 m²
• Wing Profile:
• Weight empty: 1 800 kg
• Weight curb: 3,000 kg
• Normal take-off weight:
• Maximum take-off weight:
• Engine Bristol Jupiter IX (Hiro Type 91)
• Power : 1 x 480 (500) hp ^[one]

Flight characteristics

• Maximum speed : 175 km / h
  • on the ground:
  • at height m:
• Cruising speed : 127 km / h
• Practical range: km
• Practical ceiling : 4,050 m
• Rate of climb : 90 m / min
• Wing load: kg / m² ^[1]

Armament

• Cannon-machine gun:
  • 2 x front 7.7-mm machine gun, 1 x 7.7-mm machine gun on a mobile turret in the rear cockpit and one the same in the front turret
• Bomb load: 2 x 125-kg or 3 x 60-kg bombs. ^[one]

• Tadeusz Januszewski, Krzysztof Zalewski. Japońskie samoloty marynarki 1912-1945 ISBN 83-86776-50-1

• E5Y (Neopr.) . Corner of the sky: aviation encyclopedia. The date of circulation is July 5, 2016.