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Japan's Imperial Army flag

Japan's Tachikawa Ki-36 army cooperation, Army Type 98; Tachikawa Ki-55 trainer, Army Type 99;
Allied code name: Ida

Photos

Tachikawa Type 98, Army Type KB-98 reconnaissance bomber:
Japan's Tachikawa Type 98, Army Type KB-98 reconnaissance bomber
Aeronautics Aircraft Spotters' Handbook
Tachikawa Type 98, Army Type KB-98 reconnaissance bomber:
Japan's Tachikawa Type 98, Army Type KB-98 reconnaissance bomber
Aeronautics Aircraft Spotters' Handbook

Design

The Tachikawa Ki-36 was designed to meet a 1937 Imperial Japanese Army specification for a single engine army cooperation airplane that could operate from rough airfields near the front lines.

Visibility

The Ki-36 had excellent visibility as it had the leading edges of the wings swept back and there were windows under the wings center section.

Trainer

The Tachikawa Ki-55 was basically the Ki-36 with less operational equipment.

Prototype

The Ki-36 prototype first flew on April 20, 1938. It was discovered there was a propensity for wingtip stalls, but this was cured by fitting leading edge slots in the wings.

The Ki-55 prototype first flew in September 1939.

Production

Deliveries of the Ki-36 started in November 1938. Production ended in January 1944.

Deliveries of the Ki-55 ended in December 1943.

  • Ki-36: 1,334
  • Ki-55: 1,389
  • Total: 2,723
    • Produced by: Tachikawa (1,940), Kawasaki (783)

Variants

  • Ki-36: Army cooperation.
  • Ki-55: Advanced trainer.

Usage

Japan and Thailand used the Ki-36. Cochin China, Japan, Manchuria, and Thailand used the Ki-55.

China

The Ki-36 was deployed to China for active service.

Secondary Roles

In 1943 the Ki-36 was very vulnerable to Allied fighters and was withdrawn to secondary areas.

Standard Advanced Trainer

The Ki-55 became the Imperial Japanese Army's standard advanced trainer.

Suicide Aircraft

Both the Ki-36 and Ki-55 would be equipped with bombs under the fuselage and used as suicide aircraft.

Post World War II

Three Ki-55s were found abandoned on Java and were used in the Indonesian Air Force against the Dutch.

Specifications

  Tachikawa Ki-36
Type Army cooperation
Crew 2
Engine (Type) Hitachi Ha-13a
Cylinders Radial 9
Cooling  
Net HP 510
Propeller blades 2
Dimensions  
Span 38' 8.5"
11.8 m
Length 26' 3"
8 m
Height 11' 11.25"
3.64 m
Wing area  
Weight  
Empty 2,749 lb
1,247 kg
Loaded 3,660 lb
1,660 kg
Performance  
Speed 216 mph
347 kph
Cruising speed 147 mph
236 kph
Climb to 9,840' /
3,000 m
6.7 minutes
Service ceiling 26,740'
8,150 m
Range 767 miles
1,234 km
Armament  
Nose 1: 7.7 mm MG
Rear cockpit 1: 7.7 mm MG
Bombs 10: 28 lb
10: 13 kg
OR 10: 33 lb
10: 15 kg
Suicide mission 1: 551 lb
1: 250 kg
OR 1: 1,102 lb
1: 500 kg
  Tachikawa Ki-55
Type Trainer
Crew 2
Engine (Type) Hitachi Ha-13a
Cylinders Radial 9
Cooling  
Net HP 510
Propeller blades 2
Dimensions  
Span 38' 8.5"
11.8 m
Length 26' 3"
8 m
Height 11' 11.25"
3.64 m
Wing area  
Weight  
Empty 2,848 lb
1,292 kg
Loaded 3,794 lb
1,721 kg
Performance  
Speed 217 mph
349 kph
Cruising speed 146 mph
235 kph
Climb to 9,840' /
3,000 m
6.7 minutes
Service ceiling 26,900'
8,200 m
Range 659 miles
1,060 km
Armament  
Nose 1: 7.7 mm MG
Suicide mission 1: 551 lb
1: 250 kg
OR 1: 1,102 lb
1: 500 kg
  Tachikawa Type 98
Type Bomber, Reconnaissance
Crew 3
Engine (Type) Mitsubishi Kinsei
Cylinders Radial
Cooling Air
Net HP 900
Propeller blades  
Dimensions  
Span 46'
Length 26' 2"
Height  
Wing area  
Weight  
Empty  
Loaded 7,800 lb
Performance  
Speed 250 mph
Cruising speed  
Service ceiling  
Range 260 miles
Armament  
Wings 2: MG
Rear cockpit 1: MG
Bombs 3,300 lb

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
20th Century American Military History Crucial Site