Mitsubishi KI-67

The Mitsubishi Ki-67 Hiryū was a twin-engine heavy bomber produced for the Imperial Japanese Army Air Service and Imperial Japanese Navy Air Service in World War II.

Variants

Ki-67-I

Prototypes

Diverse models with various types of weapons. 

Ki-67-Ia “Hiryu” Army Type 4 Heavy Bomber Model 1

Main production model.

The majority (420+) were modified in the factory as land-based torpedo bombers.

Ki-67-Ib

Late production model

Reinforced the tail gun turret (2 × 20 mm).

Ki-67-I KAI

Experimental model equipped with Mitsubishi Ha-104 Ru engines. 

Ki-67-I AEW variant

Equipment the early warning radar “Taki 1 Model II”. 

Ki-67 “To-Gō”

Army special attack aircraft type 4: Improved version of the Ki-67 I for kamikaze, unarmed, without turrets, and with two 800 kg (1,760 lb) bombs in belly compartment.

Ki-67  Guided missile Mothership

Experimental type for carrying guided missiles.

Ki-67 long-range bomber variant

Equipped with widened wings and without turrets.

Ki-67 ground attack variant

Version armed with three remote-control ground-firing 5 × 30° 20 mm cannons, 20 mm defensive cannon in the tail position, three 13.2 mm (.51 in) machine guns in lateral and upper positions, and more fuel capacity for long range. 

Ki-67-II

Prototypes.

Modified version of the Ki-67-I, with two Mitsubishi Ha-214 engines of 1,603 kW (2,150 hp) each. 

Ki-67 glider tug

A standard Ki67-I was used to tow the Manazuru transport glider in tests.

Yasukuni Naval torpedo bomber version of the Ki-67-I, Created from Ki-67-Is transferred from the IJAAF.

Ki-109 Day Fighter prototypes.

Ki-67-I modified for daylight fighting.

One fixed 75 mm Type 88 Heavy Cannon in the nose and one mobile 12.7 mm (0.5 in) Ho-103 Type 1 machine gun in the tail.

Equipped with Mitsubishi Ha-104 engines of 1,417 kW (1,900 hp) each or turbocharged Ha-104 Ru with 1,417 kW (1,900 hp) each. 

Ki-109 Army Heavy Fighter Interceptor

First non-prototype model of series.

Lacking gun positions in upper and side positions and without bomb-bay compartments.

Fixed 75 mm Type 88 Heavy Cannon in the nose retained from Day Fighter prototype, with a revised version of tail gun. 

Ki-112

Bomber escort fighter made with a wooden construction.

Armed with 8 x 12.7mm’s and 1 x 20mm. Only a project.

Ki-167 “Sakura-dan”

Special attack version equipped with one shaped charge thermite bomb of 2,900 kg (6,400 lb) in the fuselage behind the crew cabin.

The shape of the bomb conducted the blast forward, projecting a jet capable of reaching nearly a mile with a maximum blast radius of 300 m (980 ft).

The bomb was designed to breach emplacements as well as to destroy massed formations of armour.

Q2M1 Taiyo

Navy variant of Ki-67-I, for antisubmarine warfare.

Specifications

Crew

6–8

Length

18.7 m (61 ft 4 in)

Wingspan

22.5 m (73 ft 10 in)

Height

7.7 m (25 ft 3 in)

Wing area

65.85 m2 (708.8 sq ft)

Empty weight

8,649 kg (19,068 lb)

Gross weight

13,765 kg (30,347 lb)

Powerplant

2 × Mitsubishi Ha104, 18-cylinder air-cooled radial piston engines, 1,400 kW (1,900 hp) each for take-off

1,350 kW (1,810 hp) at 2,200 m (7,200 ft)

1,201 kW (1,610 hp) at 8,300 m (27,200 ft)

Propellers

4-bladed constant-speed metal propellers

Performance

Maximum speed

537 km/h (334 mph, 290 kn) at 6,090 m (19,980 ft)

Cruise speed

400 km/h (250 mph, 220 kn) at 8,000 m (26,000 ft)

Range

2,800 km (1,700 mi, 1,500 nmi)

Ferry range

3,800 km (2,400 mi, 2,100 nmi)

Service ceiling

9,470 m (31,070 ft)

Time to altitude

6,000 m (20,000 ft) in 14 minutes 30 seconds

Wing loading

209 kg/m2 (43 lb/sq ft)

Power/mass

0.205 kW/kg (0.125 hp/lb)

Armament

Guns

1 × 20 mm (0.79 in) Ho-5 cannon in dorsal turret

5 × 12.7 mm (.50in) Ho-103 (Type 1) machine guns, one in nose, 1 in the tail, and 1 in each beam position (late models); Early models carried magazine-fed 7.7 mm (.303in) Type 89 machine guns in the beam positions.

Bombs

800 kg (1,764 lb) of bombs in internal bay or one torpedo,

Kamikaze versions carried 2,900 kg (6,400 lb) of bombs.

 

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