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Tachikawa Ki-70

The Tachikawa Ki-70 “Clara” was a high speed photo reconnaissance aircraft that was tested for the Japanese Air Force in prototype form but never entered production.

The Ki-70 was the intended successor to the Mitsubishi Ki-46 but was difficult to handle and was slower than the Mitsubishi Ki-46.

The Ki-70 was first flown in 1943 but was found unsatisfactory and the program was terminated. 

3 Prototypes built.

Using the familiar layout of aircraft such as the Mitsubishi G3M bomber and its planned predecessor the Mitsubishi Ki-46, the Ki-70 had a twin tail and narrow fuselage, an extensively glazed nose and second cockpit facing aft for the gunner.

In later years the Ki-70 was used to disprove supposed photographic evidence concerning Amelia Earhart’s supposed capture by the Japanese before World War II.





14.5 m (47 ft 7 in)


17.8 m (58 ft 5 in)


3.46 m (11 ft 4 in)

Wing area

43 m2 (460 sq ft)

Empty weight

5,895 kg (12,996 lb)

Gross weight

9,855 kg (21,727 lb)

Max take-off weight

10,700 kg (23,589 lb)


2 × Mitsubishi Ha-104M (Army Type 4 1,900hp Air Cooled Radial)

18-cylinder air-cooled radial piston engine,

1,400 kW (1,900 hp) each for take-off

1,350 kW (1,810 hp) at 2,200 m (7,218 ft)

1,201 kW (1,610 hp) at 6,100 m (20,013 ft)


4-bladed constant-speed metal propellers


Maximum speed

647 km/h (402 mph, 349 kn) at 5,400 m (17,717 ft)

Cruise speed

490 km/h (300 mph, 260 kn) at 5,400 m (17,717 ft)


2,480 km (1,540 mi, 1,340 nmi)

Service ceiling

11,000 m (36,000 ft)

Time to altitude

5,000 m (16,404 ft) in 5 minutes

Wing loading

229.2 kg/m2 (46.9 lb/sq ft)


0.2884 kW/kg (0.1754 hp/lb)



1x 12.7 mm (0.500 in) MG, 1x 7.7 mm (0.303 in) MG.



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