Kawasaki Ki-102

The Kawasaki Ki-102 was a twin-engine, two-seat, long-range heavy fighter developed to replace the Ki-45 Toryu. Three versions were planned: the Ki-102a day fighter, Ki-102b ground-attack and Ki-102c night fighter. This aircraft’s Allied reporting name was “Randy”.

The Ki-102 entered service in 1944 with the Imperial Japanese Army Air Force, but saw limited action. The main type (102b) was kept in reserve to protect Japan, although it did see some limited duty in the Okinawa campaign. It was kept out of front line service because it was hoped that it would be the carrier of the Igo-1-B air-to-ground guided missile when the Allied invasion of Japan occurred.

General characteristics

• Crew: 2
• Length: 11.45 m (37 ft 7 in)
• Wingspan: 15.57 m (51 ft 1 in)
• Height: 3.7 m (12 ft 2 in)
• Wing area: 34 m² (370 sq ft)
• Airfoil: root: NACA 24015; tip: NACA 23010^[2]
• Empty weight: 4,950 kg (10,913 lb)
• Gross weight: 7,300 kg (16,094 lb)
• Powerplant: 2 × Mitsubishi Ha112-II Ru 14-cylinder air-cooled radial engine, 1,120 kW (1,500 hp) each
• Propellers: 3-bladed constant-speed propellers

Performance

• Maximum speed: 580 km/h (360 mph, 310 kn)
• Range: 2,000 km (1,200 mi, 1,100 nmi)
• Service ceiling: 10,000 m (33,000 ft)
• Rate of climb: 11.9 m/s (2,340 ft/min)
• Power/mass: 0.417 kW/kg (0.254 hp/lb)

Armament

• Guns:
  • 1 × 57 mm (2.24 in) Ho-401 cannon—replaced in the 102a with a 37 mm (1.46 in) Ho-204 cannon, deleted in the 102c
  • 2 × 20 mm Ho-5 cannon in the belly—replaced in the 102c with 30 mm (1.18 in) cannon in the package, plus oblique-firing 2 × 20 mm cannon
  • 1 × 12.7 mm (0.50 in) Ho-103 machine gun (deleted in the Ki-102a and Ki-102)
• Bombs:
  • 2 × 200 L (53 US gal) drop tanks; or
  • 2 × 250 kg (551 lb) bombs or
  • 1 × Kawasaki Igo-1b guided missile

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