Sigurd Johannes Savonius

Sigurd Johannes Savonius was a Finnish architect and inventor, born on 2 November 1884 in Hämeenlinna in the Grand Duchy of Finland and died on 31 May 1931. He is known especially for the Savonius wind turbine, a vertical axis machine that he invented in 1924 and that converts the force of the wind into torque on a rotating shaft using aerofoils mounted on a vertical shaft or framework. He died on 31 May 1931, at the age of 46, and is remembered in wind power as an architect by profession who became the inventor of one of the vertical axis wind turbine types.