Kawasaki Ki-102b Otsu
| GENERAL DATA | |||
| Other Designation(s) | Army
Type 4 Assault Aircraft, Randy (Allied reporting name) |
||
| Type |
Attacker, night fighter |
Crew | 2 |
| Manufacturer(s) | Kawasaki Kokuki
Kogyo K.K. |
||
| Production | Ki-102a: 26, Ki-102b:
207, Ki-102c: 2 |
||
| Prototype first flight | 1944 |
Introduction | 1944 |
| Variants | |||
| Ki-102 | Prototypes, 3 built. | ||
| Ki-102a (Type Ko) | Externally similar to the 102b, but with turbosuperchargers that enabled the engine to maintain its rating at higher altitudes. The 57 mm (2.24 in) cannon was swapped in favor of a 37 mm (1.46 in) cannon, and the 12.7 mm (.50 in) rear gun was deleted, 26 built. | ||
| Ki-102b (Type Otsu) | Ground-attack variant similar to prototypes, except with revised tail wheel, 207 built | ||
| Ki-102c (Type Hei) | Night fighter version with lengthened fuselage and span. Radar under a Plexiglas dome, oblique-firing 20 mm cannons, and the 20 mm cannons in the belly replaced with 30 mm (1.18 in) cannons in Schräge Musik behind the cockpit, two built. | ||
| DIMENSIONS | |||
| Length | 11.45 m |
Empty Weight | 4950 kg |
| Wingspan | 15.57 m |
Loaded Weight | 7300 kg |
| Height | 3.7 m |
Maximum Takeoff Weight | ? kg |
| Wing area | 34 m² |
Wing loading | 145.59 kg/m² |
| ARMAMENT (Ki-102b) | ||||
| Main Gun | Nose | 1 × 57 mm (2.24 in) Ho-401
cannon * |
1 x 15 |
|
| Secondary Guns | Belly | 2 × 20 mm Ho-5 cannon ** |
Ammunition Carried | 2 x 200 |
| Rear cockpit | 1 × 12.7 mm (0.50 in) Ho-103 MG *** |
1 x 200 |
||
| Bombs | 2 × 250 kg bombs or 1 ×
Kawasaki Igo-1b guided missile |
|||
(*) replaced in the 102a with a 37 mm (1.46
in) Ho-204 cannon, deleted in the 102c, (**) replaced in the 102c with
30 mm (1.18 in) cannon in the package, plus oblique-firing 2 ×
20 mm cannon,
(***) deleted in the Ki-102a and Ki-102)
AI interception radar on version 102c
| POWERPLANT | |||
| Engine | 2 ×
Mitsubishi Ha112-II Ru |
Type & Displacement | 2 x 14-cy. air-cooled
radial, 32.3 L |
| Horsepower (maximum) | 2
x 1500 hp |
Power/Weight Ratio | 410.96 hp / ton * |
| Fuel Capacity | 740 L + 2
× 200 L drop tanks
|
||
(*) with Loaded Weight
| PERFORMANCES | |||
| Maximum Speed | 580 km/h
* |
Cruise Speed | 444 km/h |
| Stall Speed ** | 140 km/h |
Service Ceiling | 10000 m |
| Rate of Climb | 11.9 m/s |
Range | 2000 km |
(*) 630 km/h for the Ki-102a, (**) vitesse
de décrochage
| Sources | |||
| Wikipédia | aviationsmilitaires.net | ||
Drawings |
