Yokosuka E5Y

 

1st Flight 1930

The Yokosuka E5Y (long designation: Yokosuka Navy Type 90-3 Reconnaissance Seaplane) was a single-engine Japanese seaplane used for reconnaissance.

The E5Y was also built by Kawanishi as the E5K (long designation: Kawanishi Navy Type 90-3 Reconnaissance Seaplane)

Variants

Yokosuka Navy Type 14-2 Reconnaissance Seaplane Kai-1 – Prototype of the later Type-14-2 and Type 90-3 production aircraft, powered by a 450 hp (340 kW) Bristol Jupiter VIII radial engine.

Yokosuka Navy Type 14-2 Reconnaissance Seaplane Kai-1-C – Initial production aircraft powered by 450 hp (340 kW) Lorraine 12E Courlis W-12 water-cooled engines.

Yokosuka Navy Type 14-2 Reconnaissance Seaplane Kai-1-D – Later prototype aircraft with Jupiter engines in a lengthened nose.

Yokosuka Type 90-3 Reconnaissance Seaplane – Designation of production aircraft to have been built by the Yokosuka Naval Arsenal (Yokosho)

Kawanishi Type G – Company designation for two pre-production Navy Type 14-2 Reconnaissance Seaplane Kai-1-Ds.

Kawanishi Type 90-3 Reconnaissance Seaplane – Seventeen production aircraft, initially powered by Jupiter engines, with some later being re-engine with Hiro Type 91 520 hp water-cooled W-12 engines

Yokosuka E5Y1 – Short designation of aircraft built at the Yokosuka Naval Arsenal, (a.k.a. Yokosho E5Y1)

Kawanishi E5K1 – Short designation for the production aircraft built by Kawanishi.

Specifications

Crew: 3

Length: 10.812 m (35 ft 6 in)

Wingspan: 14.46 m (47 ft 5 in)

Height: 4.74 m (15 ft 7 in) with wings folded

Wing area: 55 m2 (590 sq ft)

Empty weight: 1,850 kg (4,079 lb)

Gross weight: 3,000 kg (6,614 lb)

Powerplant: 1 × Bristol Jupiter VIII 9-cyl. Air-cooled radial piston engine, 340 kW (450 hp)

Propellers: 2-bladed wooden fixed pitch propeller

Performance

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

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

Endurance: 6.5 hours

Service ceiling: 4,050 m (13,290 ft)

Time to altitude: 3,000 m (9,800 ft) in 33 minutes 20 seconds

Wing loading: 54.5 kg/m2 (11.2 lb/sq ft)

Power/mass: 0.112 kW/kg (0.068 hp/lb)

Armament

Guns: 2 x 7.77 mm (0.306 in) fixed Type 89 machine-guns and 2 x 7.77 mm (0.306 in) flexible Type 89 machine-guns

Bombs: max250 kg (551.156 lb)

2 x 125 kg (275.578 lb)

or 3 x 60 kg (132.277 lb)

or 3 x 30 kg (66.139 lb).

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