Reginald Joseph Mitchell (20 May 1895 – 11 June 1937) was a British aircraft designer who worked for the Southampton aviation company Supermarine from 1916 until 1936. He is best known for designing racing seaplanes such as the Supermarine S.6B, and for leading the team that designed the Supermarine Spitfire.
Born in Butt Lane, Staffordshire, Mitchell attended Hanley High School and afterwards worked as an apprentice at a locomotive engineering works, whilst also studying engineering and mathematics at night. In 1916 he moved to Southampton to join Supermarine. He was appointed Chief Engineer in 1920 and Technical Director in 1927. Between 1920 and 1936 he designed 24 aircraft, which included flying boats and racing seaplanes, light aircraft, fighters, and bombers. From 1925 to 1929 he worked on a series of racing seaplanes, built by Supermarine to compete in the Schneider Trophy competition, the final entry in the series being the Supermarine S.6B. The S.6B won the trophy in 1931. Mitchell was authorised by Supermarine to proceed with a new design, the Type 300, which went on to become the Spitfire.
In 1933, Mitchell underwent surgery to treat rectal cancer. He continued to work and earned his pilot's licence in 1934, but in early 1937, he was forced by a recurrence of the cancer to give up work. After his death that year, he was succeeded as chief designer at Supermarine by Joseph Smith.
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