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Aichi E3A Aircraft Information

Aichi E3A

HD 56, E3A

National origin: Germany
Manufacturer: Heinkel, Aichi Kokuki
First flight: 1929
Primary user: Imperial Japanese Navy
Number built: 12

The Heinkel HD 56 was a reconnaissance seaplane developed in Germany in 1929 to operate from warships of the Imperial Japanese Navy, which designated it the Type 90-1 Reconnaissance Seaplane or E3A. It was a conventional single-bay biplane with staggered wings braced by N-type interplane struts. The pilot and gunner sat in tandem, open cockpits. Heinkel designed the aircraft at the request of Aichi, in order to submit it as their entry in an IJN competition to select such an aircraft. Heinkel built a single HD 56 prototype that was evaluated against the Nakajima Type 90-2 Reconnaissance Seaplane and the Kawanishi Type 90-3 Reconnaissance Seaplane. The Heinkel design announced the winner in 1931, on the condition that Aichi would address some shortcomings, particularly a lack of range. Refined versions of the "losing" Nakajima and Kawanishi designs would eventually see production and - in the case of the Nakajima design - in far greater numbers.

Modifications to the HD 56 by Aichi included overall reductions in length and span, the replacement of the prototype's Wright Whirlwind with a locally-built Hitachi Tempu, and numerous detail changes. Flight tests were carried out at Nagoya in August 1931, and the type was accepted into service the following year. E3As were still in service aboard Sendai class cruisers at the outbreak of the Second Sino-Japanese War.

Specifications (E3A1)

Data from Japanese Aircraft 1910-1941

General characteristics

Crew: Two, pilot and gunner
Length: 8.45 m (27 ft 8¾ in)
Wingspan: 11.10 m (36 ft 5 in)
Height: 3.67 m (12 ft 0 in)
Wing area: 34.5 m² (371 ft²)
Empty weight: 1,118 kg (2,464 lb)
Gross weight: 1,600 kg (3,527 lb)
Powerplant: 1 x— Hitachi Tempu Type 90, 224 kW (300 hp)

Performance

Maximum speed: 197 km/h (123 mph)
Cruising speed: 125 km/h (77.6 mph)
Range: 753 km (468 miles)
Endurance: 6 hours
Service ceiling: 4,710 m (15,450 ft)
Rate of climb: 2.7 m/s (540 ft/min)

Armament

1 x— fixed, forward-firing 7.7 mm (.303 in) machine gun in forward fuselage
1 x— trainable, rearward-firing 7.7 mm (.303 in) machine gun for gunner
2 x— 30 kg (66 lb) bombs

Mikesh, Robert C; Abe, Shorzoe (1990). Japanese Aircraft 1910-1941. London: Putnam Aeronautical Books. ISBN 0 85177 840 2.
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 501.

Aichi E3A Pictures and Aichi E3A for Sale.

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Source: WikiPedia

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