As built, the Ki-74 carried a crew of five personnel throughout its deep fuselage. it displayed a length of 58 feet, a wingspan of 61 feet, and a height of 16.8 feet. Empty weight was listed at 22,490lb with a gross weight nearing 42,770lb. Power from the Ha-104 radials provided a maximum speed of 355 miles per hour with a cruising speed in the 250-mile range. The aircraft's service ceiling reached 39,370 feet and range was out to 4,970 miles.
As a high performance, high speed mount, the aircraft was modestly armed with a sole 12.7mm Ho-103 heavy machine gun - its best defense was outrunning any ground-based fire or incoming interceptor. It was also designed to carry a bombload up to 2,200lb to fulfill its secondary bomber role.
Despite the work put into the Ki-74 product, it never materialized beyond the aforementioned sixteen prototypes and preproduction aircraft. The war situation in Japan grew to the point that only emergency programs were furthered and war materials rationed to the extreme. The Ki-74 entered into the final stages of its development when the war with ended the Japanese surrender in August of 1945 - leaving the aircraft to not see any operational service in the conflict and a rather low-profile history overall.
When word of the Ki-74's development had reached Allied ears, it was assigned the nickname of "Pat", authorities believing it to be a high speed fighter type. However, as more information became available and the true role of reconnaissance / bomber came to light, the name was revised to "Patsy". None of the airframes survive today.
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