Takeo Doi (aircraft Designer)

Takeo Doi (aircraft Designer)

Takeo Doi (土井 武夫, Doi Takeo?, 31 October 1904 - 24 December 1996) was a Japanese aircraft designer. He designed many World War II fighter aircraft used by the Imperial Japanese Army Air Force. His most important work was the "Army Type 3 Fighter" (三式戦闘機, Sanshiki sentoki?), aka Kawasaki Ki-61 "Hien" (飛燕, Hi-en?) ("flying swallow") or "Tony". Also he was one of the chief designers of the Nihon Aircraft Manufacturing Corporation (NAMC) YS-11.