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Japan's Imperial Army flag

Japan's Kawasaki Ki-66 dive bomber

Design

Kawasaki Kokuki Kogyo K.K. was instructed by the Koku Hombu in September 1941 to design a dive bomber to support land forces. It was to have two 12.7 mm machine gun firing forward, a 7.7 mm machine gun in the cockpit rear, and cary 661 - 1,102 lb / 300 - 500 kg of bombs.

The snow fence dive brakes were flush under the rear wings.

Prototype

The prototypes performed well, but it was decided to not put the Ki-66 into production as it wasn't much better than the Ki-48-II. All work was stopped in October 1943.

Production

  • Kawasaki Ki-66 (prototype6): 6
    • Production: October 1942 - April 1943

Variants

  • Kawasaki Ki-66 (prototype):
  • Kawasaki Ki-66-Ia:
  • Kawasaki Ki-66-Ib: Had two Nakajima Ha-315-I engines.
  • Kawasaki Ki-66-Ic: Had two Nakajima Ha-39 (2,100 HP) engines.
  • Kawasaki Ki-66-Id: Had two Nakajima Ha-45 (1,900 HP) engines.
  • Kawasaki Ki-66-II: Heavy fighter. Had two Nakajima Ha-315-II (1,360 HP) engines.

Specifications

  Ki-66-Ia
Type Dive-bomber
Crew 2
Engine (Type) 2: Nakajima Ha-115, Army Type 1
Cylinders Radial 14
Cooling Air
Net HP 1,130 each
Propeller blades 3 metal
Dimensions  
Span 50' 10.25"
15.5 m
Length 36' 8 15/16"
11.2 m
Height 12' 1 21/32"
3.7 m
Wing area 365.972 sq ft
34 sq m
Weight  
Empty 9,039 lb
4,100 kg
Normal 12,677 lb
5,750 kg
Performance  
Speed at 18,370' / 5,600 m 332 mph
535 kph
Climb to 16,405' / 5,000 m 7 minutes 30 seconds
Service ceiling 32,810'
10,000 m
Range 1,243 miles
2,000 km
Armament  
Nose 2: 12.7 mm Ho-103, Type 1, machine gun
Cockpit - Rear 1: 7.7 mm Type 89
Dorsal 1: 7.7 mm Type 89
Bombs - Normal 661 lb
300 kg
Bombs - Maximum 1,102 lb
500 kg

Sources:

  1. Japanese Aircraft of the Pacific War, René J Francillon, 1970
20th Century American Military History Crucial Site