Tachikawa Ki-9
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Known to the Allies by the codename 'Spruce,' the Tachikawa Ki-9 was a biplane trainer aircraft of unequal span.
Two versions were originally planned - a primary and an intermediate trainer - using different engines. The type first flew on 7 January 1935. A third prototype was powered by a 150 hp Nakajima NZ radial. This showed stability problems and as a result the primary trainer model was abandoned. The Ki-9 was developed only as an intermediate trainer. For the primary trainer role, Tachikawa then started design work on a replacement, the Ki-17. The first production aircraft were delivered in 1935.
Production totalled 2,615 by 1945. After the war, the Ki-9 was operated by Indonesia.
[edit] Specifications (Ki-9 Model A)
Data from {Virtual Aviation Museum}[1]
General characteristics
- Crew: 2
- Length: 7.9 m (25 ft 11 in)
- Wingspan: 10.32 m (33 ft 10 in)
- Height: 3.1 m (10 ft 2 in)
- Wing area: m² (ft²)
- Empty weight: 1,120 kg (2,468 lb)
- Loaded weight: kg (3,482 lb)
- Useful load: kg (kg)
- Max takeoff weight: 1,580 kg (3,482 lb)
- Powerplant: 1× Hitachi Ha-13a radial , 261 kW (350 hp)
Performance
- Never exceed speed: km/h (knots, mph)
- Maximum speed: 240 km/h (knots, 149 mph)
- Cruise speed: km/h (knots, mph)
- Stall speed: km/h (knots, mph)
- Range: km (nm, mi)
- Service ceiling: 5,800 m (19,030 ft)
- Rate of climb: m/s (ft/min)
- Wing loading: kg/m² (lb/ft²)
- Power/mass: W/kg (hp/lb)
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