Yokosuka E1Y

 

1st Flight 1923

The Yokosuka E1Y was a Japanese floatplane of the 1920s.

A single-engine biplane that was designed and developed by the Yokosuka Naval Air Technical Arsenal as a reconnaissance aircraft for the Imperial Japanese Navy, 320 were built as the Type 14 Reconnaissance Seaplane, entering service in 1925 and remained in operational service until 1932.

Variants

Navy Type 10 Reconnaissance Seaplane – Prototype reconnaissance seaplane, powered by 400 hp (298 kW) Lorraine-Dietrich 1 V-12 engine but overweight. Two built.

Navy Type 10 Model A Reconnaissance Seaplane – Revised prototype, one built.

Navy Type 10 Model B Reconnaissance Seaplane – Further modified prototype and pre-production aircraft.

Navy Type 14-1 Reconnaissance Seaplane (E1Y1) – Initial production version, powered by 400 hp (298 kW) Lorraine-Dietrich 1.

Navy Type 14-2 Reconnaissance Seaplane (E1Y2) – Modified version, with new all metal floats and 450 hp (336 kW) Lorraine-Dietrich 2 W-engine.

Navy Experimental Type 14-2 Kai-1 Reconnaissance Seaplane – an experimental version of the Type 14-2

Navy Type 14-3 Reconnaissance Seaplane (E1Y3) – Further improved version with new tail and improved performance.

Navy Type 14 Modified Transport Seaplane – Civil conversion.

Specifications

Crew: 3

Length: 10.59 m (34 ft 9 in)

Wingspan: 14.22 m (46 ft 8 in)

Height: 4.15 m (13 ft 7 in)

Wing area: 54.2 m2 (583 sq ft)

Empty weight: 1,889 kg (4,165 lb)

Gross weight: 2,750 kg (6,063 lb)

Powerplant: 1 × Lorraine 2 W-12 water-cooled piston engine, 336 kW (451 hp)

Performance

Maximum speed: 178 km/h (111 mph, 96 kn)

Cruise speed: 130 km/h (81 mph, 70 kn)

Range: 1,156 km (718 mi, 624 nmi)

Endurance: 9 hours

Service ceiling: 4,000 m (13,000 ft)

Time to altitude: 3,000 m (9,843 ft) in 28 minutes 13 seconds

Wing loading: 50.7 kg/m2 (10.4 lb/sq ft)

Power/mass: 0.1226 kW/kg (0.0746 hp/lb)

Armament

Guns: 1× flexibly mounted 7.7 mm machine gun

Bombs: 2× 110 kg (240 lb) or 4× 30 kg (66 lb) bombs.

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