Yokosuka K2Y1 / K2Y2

The K2Y Series of aircraft are the Japanese License built versions of the Avro 504N.

Variants

Yokosuka K2Y1

Japanese version of the Avro 504N, given the long designation Yokosuka Navy Type 3 Primary Trainer, powered by a 130 hp (97 kW) Mitsubishi-built Armstrong Siddeley Mongoose radial piston engine, 104 built.

Yokosuka K2Y2

Improved version of the K2Y1, powered by a 160 hp (120 kW) Gasuden Jimpu 2 radial piston engine. 360 built (K2Y1 and K2Y2).

Watanabe built aircraft were given the long designation Watanabe Navy Type 3-2 Land-based Primary Trainer.

Specifications

Crew

2 Length

29 ft 5 in (8.97 m)

Wingspan

36 ft 0 in (10.97 m)

Height

10 ft 5 in (3.18 m)

Wing area

330 sq ft (31 m2)

Empty weight

1,231 lb (558 kg)

Gross weight

1,829 lb (830 kg)

Fuel capacity

25.5 imp gal (31 US gal; 116 l) fuel; 6 imp gal (7 US gal; 27 l) castor oil

Powerplant

1 × 160 hp (120 kW) Gasuden Jimpu 2 radial piston engine

Propellers

2-bladed Avro fixed-pitch wooden propeller, 9 ft 0 in (2.74 m) diameter 8 ft 8 in (2.6 m) pitch

Performance

Maximum speed

95 mph (153 km/h, 83 kn) at sea level

87 mph (76 kn; 140 km/h) at 8,000 ft (2,438 m)

85 mph (74 kn; 137 km/h) at 10,000 ft (3,048 m)

Cruise speed

74 mph (119 km/h, 64 kn) at 75% power at 8,000 ft (2,438 m)

71 mph (62 kn; 114 km/h) at 75% power at 10,000 ft (3,048 m)

Stall speed

40 mph (64 km/h, 35 kn)

Range

250 mi (400 km, 220 nmi)

Endurance

2 hours at sea level at maximum speed

2 hours 8 minutes at 8,000 ft (2,438 m) at maximum speed

3 hours at 10,000 ft (3,048 m) at maximum speed

3 hours 42 minutes at 8,000 ft (2,438 m) at cruise speed

4 hours 15 minutes at 10,000 ft (3,048 m) at cruise speed

Service ceiling

16,000 ft (4,900 m)

Rate of climb

700 ft/min (3.6 m/s)

Time to altitude

3,500 ft (1,067 m) in 5 minutes

8,000 ft (2,438 m) in 10 minutes

10,000 ft (3,048 m) in 16 minutes

Wing loading

5.54 lb/sq ft (27.0 kg/m2)

Power/mass

0.06 hp/lb (0.099 kW/kg)

Armament

1 fixed .303 Lewis atop upper wing (single-seat night fighter variants).

Share on facebook