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Tachikawa_Ki-74-
Development
Though already conceived in 1939[4] as a long-range reconnaissance aircraft capable of reaching west of Lake Baikal when operating from bases in Manchukuo (Manchuria), the prototype Ki-74 (designated as A-26 by Tachikawa) only first flew as late as in March 1944; it was powered by two 1,641 kW (2,201 hp) Mitsubishi Ha-211-I [Ha-43-I] radial engines. The following two prototypes were powered by the turbo-supercharged Mitsubishi Ha-211-I Ru [Ha-43-II], but as these experienced teething troubles, the following thirteen pre-production machines substituted the Ha-211 Ru engine for the lower-powered, but more reliable, turbo-supercharged Mitsubishi Ha-104 Ru (Army Type 4 1,900 hp Air Cooled Radial)
Though already conceived in 1939[4] as a long-range reconnaissance aircraft capable of reaching west of Lake Baikal when operating from bases in Manchukuo (Manchuria), the prototype Ki-74 (designated as A-26 by Tachikawa) only first flew as late as in March 1944; it was powered by two 1,641 kW (2,201 hp) Mitsubishi Ha-211-I [Ha-43-I] radial engines. The following two prototypes were powered by the turbo-supercharged Mitsubishi Ha-211-I Ru [Ha-43-II], but as these experienced teething troubles, the following thirteen pre-production machines substituted the Ha-211 Ru engine for the lower-powered, but more reliable, turbo-supercharged Mitsubishi Ha-104 Ru (Army Type 4 1,900 hp Air Cooled Radial)