Project Z (bomber project)

Project Z was a military project of the Empire of Japan, similar to the Nazi German Amerikabomber project, to design an intercontinental bomber capable of reaching North America.

The planned aircraft

The Project Z aircraft was to have six engines; the Nakajima Aircraft Company quickly began developing engines, proposing twinned Nakajima Ha-44 engines.
Designs were presented to the Imperial Japanese Army, including the

Nakajima G5N Shinzan, with 6 prototypes bilt;
Conversion of the Kawanishi H8K, concept only;
Nakajima Fugaku, project only;
Kawasaki Ki-91, scale model only.

None, save for the G5N, developed beyond prototypes or wind tunnel models. Late in the war, Project Z and other heavy bomber projects were cancelled.