Aircraft, Propeller, Mitsubishi G4M Betty

History: The Mitsubishi G4M (long designation: Mitsubishi Navy Type 1 attack bomber: 一式陸上攻撃機, 一式陸攻 Ichishiki rikujō kōgeki ki, Ichishikirikkō) was the main twin-engine, land-based bomber used by the Imperial Japanese Navy Air Service in World War II. The Allies gave the G4M the reporting name Betty. Japanese Navy pilots called it Hamaki (葉巻, "cigar", lit. "leaf roll") due to its cylindrical shape.

The G4M had very good performance, especially in operational range; this was achieved by its structural lightness and an almost total lack of protection for the crew, with no armor plating or self-sealing fuel tanks. These omissions proved to be the aircraft's weakness when confronted with American fighter aircraft during the Pacific War.

Railroad/Company: Mitsubishi Heavy Industries, Ltd. (三菱重工業株式会社 Mitsubishi Jūkōgyō Kabushiki-kaisha, informally MHI) is a Japanese multinational engineering, electrical equipment and electronics company headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group.

MHI's products include aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, printing machines, ships and space launch vehicles. Through its defense-related activities it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan.

Mitsubishi Heavy Industries is related to Mitsubishi UFJ, the bank, but the two are separate operating entities.