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Tachikawa Ki-17

The Tachikawa Ki-17 was a basic training aircraft of the Imperial Japanese Army Air Force in the 1930s.

It was known to the Allies under the nickname of Cedar during World War II.

The Ki-9 was originally planned to be manufactured in two versions using the same basic airframe, but with different engines for service as either a primary or intermediate trainer.

However, when the lower-powered form proved to be unsuitable due a centre of gravity issue, design of a new airframe was ordered for the basic trainer version and was given the new designation of Ki-17.

Compared to the Ki-9, the Ki-17 had equal-span wings, a slimmer fuselage and a revised tailplane.

It was powered by a 112 kW (150 hp) Hitachi Ha-13a radial engine.

The first prototype flew in July 1935.

The only major change made to subsequent production aircraft was the deletion of the upper-wing ailerons to eliminate oversensitive control inputs

The Ki-17 was introduced to service as the Army Type 95-3 Basic Grade Trainer Model A under the former aircraft naming nomenclature system.

Tachikawa manufactured 560 Ki-17s between 1936 and 1943 and the type saw service with the Army Air Academy and flight training schools.





7.8 m (25 ft 7 in)


9.82 m (32 ft 3 in)

Height: 2.95 m (9 ft 8 in)

Wing area

26.02 m2 (280.1 sq ft)

Empty weight

618 kg (1,362 lb)

Gross weight

900 kg (1,984 lb)


1 × Hitachi Ha12 (Army Type 95 150hp Air Cooled Radial)

7-cylinder air-cooled radial piston engine,

110 kW (150 hp) for take-off


2-bladed fixed-pitch wooden propeller


Maximum speed

170 km/h (110 mph, 92 kn)

Cruise speed

130 km/h (81 mph, 70 kn)


3 hours 27 minutes

Service ceiling

5,300 m (17,400 ft)

Wing loading

34.6 kg/m2 (7.1 lb/sq ft)


0.125 kW/kg (0.076 hp/lb).



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