Mitsubishi Q2M

The Mitsubishi Q2M "Tai'yō" (大洋, Great Sea) design was derived from the Mitsubishi Ki-67-I Hiryū ("Peggy") heavy/torpedo bomber of the Japanese Army and its Naval variant, "Yasukuni". It was ordered for design and construction in the last stages of war.

Development
Powerful engines of 1840 hp-metric would have been used to drive five-blade propellers. Such an aircraft would have been managed by five or six crew. Due to technical troubles and a long development of the theoretical design, this aircraft did not advance from paper plans in last days of conflict.