Igor Sikorsky Kyiv Polytechnic Institute number of prominent people worked and studied at the KPI: E.O.Paton, the inventor of electric welding; M. I. Konovalov, a well-known chemist; I. P. Bardin, Ukraine's greatest metallurgist; A. M. Lyulka, USSR's premier designer of jet engines; rocket scientist Sergey Korolyov; creator of Sikorsky Helicopters, the well-known inventor Igor Sikorsky, well-known scientist in the field of fuel combustion and protection of the atmosphere from industrial pollution Isaak Sigal; Boris Yakovlevich Bukreev, a prominent mathematician known for his works in complex functions, differential equations, and non-Euclidean geometry. President of the First Exam Board in chemistry faculty was Dmitri Mendeleev. Also must
Sikorsky S-9 completion the S-9 was found to be substantially heavier than anticipated and the engine only delivered 80% of its rated horsepower. Initial flight tests revealed very poor performance. The engine was replaced by a Gnome Monosoupape and further flights showed only a nominal increase in speed. The machine was eventually scrapped. Sikorsky S-9 The Sikorsky S-9 "Kruglyj" (Rounded One) was a Russian single engine prototype aircraft completed in the spring of 1913 by the Russian Baltic Railroad Car Works while Igor Sikorsky was the chief engineer of the aircraft manufacturing division. The S-9 was a three-seat mid-wing monoplane with constant-chord