Stefan Drzewiecki

Stefan Drzewiecki

Stefan Drzewiecki

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Stefan Drzewiecki (July 26, 1844 in Kunka, Podolia, Russian Empire (today Ukraine) – April 23, 1938 in Paris) was a Polish scientist, journalist, engineer, constructor and inventor, working in Russia and France.

Drzewiecki left Poland early in life to complete his education in France. With a knack for creativity and invention, he invented such useful tools as the kilometric counter for cabs. At the specific request of Grand Duke Konstantin, Drzewiecki moved to St. Petersburg in 1873. While in Russia, he constructed an instrument that drew the precise routes of ships onto a map.

Drzewiecki distinguished himself mainly in aviation and ship building. Beginning in 1877, during the Russo-Turkish War, he developed several models of propeller-driven submarines that evolved from single-person vessels to a four-man model. He developed the theory of gliding flight, developed a method for the manufacture of ship and plane propellers (1892), and presented a general theory for screw-propeller thrust (1920). He also developed several models of early submarines for the Russian Navy.

His work "Theorie generale de l'helice" (1920), was honored by the French Academy of Science as a fundamental work in the development of modern propellers.

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