Boris Stechkin
Introduction '''Boris Sergeyevich Stechkin''' (1891–1969) was a Russian Empire scientist, engineer and inventor. He developed a theory of heat engines and was involved in construction of many Soviet aircraft engines. He was also co-developer of Sikorsky Ilya Muromets (the first four-engine airplane and bomber, 1913) and Lebedenko's Tsar Tank (the largest armored vehicle in history, 1916–1917). He died in Moscow on April 2, 1969.
See also * List of Russian inventors
References *  Stechkin's biography at The Heroes of the Country *  Lebedenko (or Tsar) Tank