The Kawasaki Ki-91 was a Japanese heavy bomber developed by Kawasaki Aircraft Industries during the later years of World War II.
Development
In early 1943, following the cancellation of the Nakajima Ki-68 and Kawanishi Ki-85 due to the failure of the Nakajima G5N, Kawasaki responded to the Imperial Japanese Army's requirement for a long-range bomber of similar size and performance to the B-29 Superfortress with the Ki-91. Like the G5N, Ki-68, and Ki-85, the Ki-91 was to be capable of launching attacks on the continental US from Japan. In April 1944, a wooden mockup was built for inspection, and by May production of the first prototype was ordered. Construction of the prototype began in June, but the first B-29 raids on Japan were underway beginning that month. In February 1945, the first Ki-91 prototype was 60 percent complete when a B-29 air raid damaged the facility in Gifu Prefecture where the Ki-91 prototype was being built, bringing the program to a halt.[1]
Design
The Ki-91 was a design for a heavy bomber similar in size and bombload to the B-29 Superfortress and Consolidated B-32. It had a bigger wingspan and fuselage than the B-29 and B-32, and featured a pressurized cabin to allow high altitude flights. The prototype was to lack a pressurized cabin, but production aircraft were to be built with the pressurized cabin.[1]
^ abcDyer, Edwin M. III (2009). Japanese Secret Projects:Experimental aircraft of the IJA and IJN 1939–1945 (1st ed.). Hinkley: Midland publishing. pp. 14–16. ISBN978-1-85780-317-4.
Francillon, René J., Ph.D (1979). Japanese aircraft of the Pacific War (2 ed.). Putnam. ISBN0-370-30251-6.{{cite book}}: CS1 maint: multiple names: authors list (link)
