Nakajima J1N - Specifications (J1N1-S)

Specifications (J1N1-S)

Data from Japanese Aircraft of the Pacific War

General characteristics

• Crew: 2
• Length: 12.77 m (41 ft 11 in)
  

J1N1: 12.18 m (40 ft)

J1N1-C: 12.18 m (40 ft)

• Wingspan: 16.98 m (55 ft 9 in)
• Height: 4.562 m (15 ft 0 in)
• Wing area: 40 m2 (430 sq ft)
• Empty weight: 4,480 kg (9,877 lb)
  

J1N1: 5,020 kg (11,067 lb)

J1N1-C: 4,852 kg (10,697 lb)

• Gross weight: 7,010 kg (15,454 lb)
  

J1N1: 7,250 kg (15,984 lb)

J1N1-C: 6,890 kg (15,190 lb)

• Max takeoff weight: 8,184 kg (18,043 lb)
  

J1N1: 8,030 kg (17,703 lb)

J1N1-C: 7,527 kg (16,594 lb)

• Fuel capacity: 1,700 l (373.9 imp gal)

J1N1: 2,270 l (499.3 imp gal)

• Powerplant: 2 × Nakajima NK1F Sakae 21 14-cyl. two-row air-cooled radial piston engine, 840 kW (1,130 hp) each take-off rating
  

820.3 kW (1,100 hp) at 2,850 m (9,350 ft)

730.8 kW (980 hp) at 6,000 m (19,685 ft)

J1N1: 1x Nakajima NK1F Sakae 21 + 1x Nakajima NK1F Sakae 22 handed engines

• Propellers: 3-bladed un-handed metal constant-speed propellers
  

J1N1: handed 3-bladed metal constant speed propellers

Performance

• Maximum speed: 507 km/h; 315 mph (274 kn) at 5,840 m (19,160 ft)
• Cruise speed: 333 km/h; 207 mph (180 kn) at 4,000 m (13,123 ft)
• Range: 2,545 km; 1,581 mi (1,374 nmi)
• Ferry range: 3,778 km; 2,348 mi (2,040 nmi)
• Rate of climb: 8.7 m/s (1,710 ft/min)
• Time to altitude: 5,000 m (16,404 ft) in 9 minutes 35 seconds
• Wing loading: 175.3 kg/m² (35.9 lb/sq ft)
  

J1N1: 181.3 kg/m² (37.1 lb/ft²)

J1N1-C: 172.3 kg/m² (35.3 lb/ft²)

• Power/mass: 0.27 kW/kg (0.125 hp/lb)
  

J1N1: 0.21 kW/kg (0.128 hp/lb)

J1N1-C: 0.226 kW/kg (0.137 hp/lb)

Armament

• Guns: 4× 20 mm Type 99 cannon, two upward- and two downward-firing
  

or 2× 20 mm Type 99 cannon, firing upward only

or 3× 20 mm Type 99 cannon, all three firing upward

J1N1:

1x forward firing fuselage mounted 20mm Type 99 Model 1 cannon

2x forward firing fuselage mounted 7.7mm Type 97 machine guns

4x 7.7mm Type 97 machine guns in two remotely controlled dorsal barbettess

J1N1-C:

1x rearwards firing, manually aimed 13mm Type 2 machine gun

J1N1-C-KAI:

4× 20 mm Type 99 cannon, two upward- and two downward-firing

J1N1-R:

1x rearwards firing, manually aimed 13mm Type 2 machine gun

1x 20mm Type 99 Model 1 cannon in a dorsal turret

J1N1-Sa:

2× 20 mm Type 99 cannon, firing upward only

1x optional forward firing fuselage mounted 20mm Type 99 Model 1 cannon