Kawasaki Ki-102

The Ki-102 entered service in 1944 but saw limited action. The main type (Ki-102 B) 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 Ki-148 air-to-surface guided missile when the Allied invasion of Japan occurred. ==Variants==

; Ki-102 :prototypes, three built ; Ki-102 A (kō/甲) :Externally similar to the Ki-102 B, but with turbosuperchargers that enabled the engines to maintain their 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-102 B (otsu/乙) :Ground-attack variant similar to prototypes, except with revised tail wheel, 207 built ; Ki-102 C (hei/丙) :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. ; Ki-108 :High-altitude fighter prototype with pressurised cabin, two conversions from Ki-102 B aircraft using the structural improvements used on the Ki-102 C. ; Ki-108 Kai :Improved version of the Ki-108 with longer fuselage and enlarged wings. Two built. ==Specifications (Ki-102 B)==