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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.1

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.1

Trainer

The Tachikawa Ki-55 was basically the Ki-36 with less operational equipment.1

Prototype

The Ki-36 prototype first flew on April 20, 1938.1 It was discovered there was a propensity for wingtip stalls, but this was cured by fitting leading edge slots in the wings.1

The Ki-55 prototype first flew in September 1939.1

Production

Deliveries of the Ki-36 started in November 1938.1 Production ended in January 1944.1

Deliveries of the Ki-55 ended in December 1943.1

  • Ki-36: 1,3341
  • Ki-55: 1,3891
  • Total: 2,7231
    • Produced by: Tachikawa (1,940)1, Kawasaki (783)1

Variants

  • Ki-36: Army cooperation.1
  • Ki-55: Advanced trainer.1

Usage

Japan and Thailand used the Ki-36.1 Cochin China, Japan, Manchuria, and Thailand used the Ki-55.1

China

The Ki-36 was deployed to China for active service.1

Secondary Roles

In 1943 the Ki-36 was very vulnerable to Allied fighters and was withdrawn to secondary areas.1

Standard Advanced Trainer

The Ki-55 became the Imperial Japanese Army's standard advanced trainer.1

Suicide Aircraft

Both the Ki-36 and Ki-55 would be equipped with bombs under the fuselage and used as suicide aircraft.1

Post World War II

Three Ki-55s were found abandoned on Java and were used in the Indonesian Air Force against the Dutch.1

Specifications

  Tachikawa Ki-36
Type Army cooperation1
Crew 21
Engine (Type) Hitachi Ha-13a1
Cylinders Radial 91
Cooling  
Net HP 5101
Propeller blades 21
Dimensions  
Span 38' 8.5"1
11.8 m1
Length 26' 3"1
8 m1
Height 11' 11.25"1
3.64 m1
Wing area  
Weight  
Empty 2,749 lb1
1,247 kg1
Loaded 3,660 lb1
1,660 kg1
Performance  
Speed 216 mph1
347 kph1
Cruising speed 147 mph1
236 kph1
Climb to 9,840' /
3,000 m
6.7 minutes1
Service ceiling 26,740'1
8,150 m1
Range 767 miles1
1,234 km1
Armament  
Nose 1: 7.7 mm MG1
Rear cockpit 1: 7.7 mm MG1
Bombs 10: 28 lb1
10: 13 kg1
OR 10: 33 lb1
10: 15 kg1
Suicide mission 1: 551 lb1
1: 250 kg1
OR 1: 1,102 lb1
1: 500 kg1
  Tachikawa Ki-55
Type Trainer1
Crew 21
Engine (Type) Hitachi Ha-13a1
Cylinders Radial 91
Cooling  
Net HP 5101
Propeller blades 21
Dimensions  
Span 38' 8.5"1
11.8 m1
Length 26' 3"1
8 m1
Height 11' 11.25"1
3.64 m1
Wing area  
Weight  
Empty 2,848 lb1
1,292 kg1
Loaded 3,794 lb1
1,721 kg1
Performance  
Speed 217 mph1
349 kph1
Cruising speed 146 mph1
235 kph1
Climb to 9,840' /
3,000 m
6.7 minutes1
Service ceiling 26,900'1
8,200 m1
Range 659 miles1
1,060 km1
Armament  
Nose 1: 7.7 mm MG1
Suicide mission 1: 551 lb1
1: 250 kg1
OR 1: 1,102 lb1
1: 500 kg1
  Tachikawa Type 98
Type Bomber2, Reconnaissance2
Crew 32
Engine (Type) Mitsubishi Kinsei2
Cylinders Radial2
Cooling Air2
Net HP 9002
Propeller blades  
Dimensions  
Span 46'2
Length 26' 2"2
Height  
Wing area  
Weight  
Empty  
Loaded 7,800 lb2
Performance  
Speed 250 mph2
Cruising speed  
Service ceiling  
Range 260 miles2
Armament  
Wings 2: MG2
Rear cockpit 1: MG2
Bombs 3,300 lb2

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