Mitsubishi J2M

Specifications

1st Flight 1942

Crew: 1

Length: 9.945 m (32 ft 8 in)

Wingspan: 10.8 m (35 ft 5 in)

Height: 3.81 m (12 ft 6 in)

Wing area: 20.05 m2 (215.8 sq ft)

Empty weight: 2,839 kg (6,259 lb)

Gross weight: 3,211 kg (7,079 lb)

Powerplant: 1 × Mitsubishi MK4R-A Kasei 23a 14-cylinder air-cooled radial piston engine, 1,300 kW (1,800 hp) for take-off

1,174 kW (1,575 hp) at 1,800 m (5,906 ft)

1,051 kW (1,410 hp) at 4,800 m (15,748 ft)

Propellers: 4-bladed constant-speed metal propeller

Performance

Maximum speed: 587 km/h (365 mph, 317 kn) at 5,300 m (17,388 ft)

Cruise speed: 351 km/h (218 mph, 190 kn)

Range: 1,898 km (1,179 mi, 1,025 nmi)

Service ceiling: 11,700 m (38,400 ft)

Time to altitude: 6,000 m (19,685 ft) in 6 minutes 14 seconds

Wing loading: 171.3 kg/m2 (35.1 lb/sq ft)

Power/mass: 0.391 kW/kg (0.238 hp/lb)

Armament

2x 20 mm (0.787 in) Type 99 Mark 2 machine gun inboard wing-mounted with 190 rpg

2x Type 99 Mark 1 machine gun outboard wing-mounted with 210 rpg

2× 60 kg (132 lb) bombs

or

2 × 200 l (53 US gal; 44 imp gal) drop tanks or a larger central drop tank

Variants

J2M1 Prototype:

Fitted with the 1,044 kW (1,400 hp) Mitsubishi MK4C Kasei 13 14-cylinder air-cooled radial engine, and armed with two 7.7 mm (.303 in) Type 97 machine guns in the upper fuselage and two wing-mounted 20 mm Type 99 Model II cannon. – 8 built.

J2M2 Model 11:

Powered by 1,379 kW (1,850 hp) Mitsubishi MK4R-A Kasei 23a 14-cylinder radial engine, same armament as the J2M1.

J2M3 Model 21:

Armed with two wing-mounted 20 mm Type 99 Model II cannon and two wing-mounted 20 mm Type 99 Model I cannon.

J2M3a Model 21A:

Armed with four wing-mounted 20 mm Type 99 Model II cannon.

J2M4 Model 32:

Prototype fitted with the 1,357 kW (1,820 hp) Mitsubishi MK4R-C Kasei 23c engine.

Many armament configurations have been reported, e.g., fuselage-mounted oblique-firing 20 mm Type 99 Model I cannon designed to fire upward as it passed underneath a bomber, two wing-mounted 20 mm Type 99 Model II cannon, and two wing-mounted 20 mm Type 99 Model I cannon.

J2M5 Model 33:

High altitude variant powered by 1,357 kW (1,820 hp) Mitsubishi MK4U-A Kasei 26a engine with mechanically driven supercharger, giving increased high-altitude speed at the expense of range.

Two 20 mm Type 99 cannon in fuselage, two 20 mm Type 99 Model II cannon in wings.

J2M5a Model 33A: Armed with four wing-mounted 20 mm Type 99 Model II cannon.

Wing cannon were harmonized in trajectory and ballistics with each 200 rpg.

J2M6 Model 31:

Chronologically earlier than J2M4 and J2M5 this version was based on J2M3.

Had wider cockpit and improved bubble canopy later used in J2M3 built since July 1943.

J2M6a Model 31A:

Chronologically earlier than J2M4 and J2M5 this version was based on J2M3a.

Had a wider cockpit and improved bubble canopy later used in J2M3a built since July 1943, One J2M6a was built.

J2M7 Model 23A:

J2M3 powered by Kasei 26a engine, a few built.

J2M7a Model 23A:

J2M3a powered by Kasei 26a engine, a few built.

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