Pyotr Ufimtsev
Pyotr (Petr) Yakovlevich Ufimtsev (; born 8 July 1931) is a Soviet and Russian electrical engineer and mathematical physicist, best known for his pioneering work on the physical theory of diffraction (PTD), which laid the groundwork for modern stealth aircraft technology. His research on how electromagnetic waves reflect from surfaces like edges and vertices became critical in the development of aircraft with reduced radar signatures. Biography Pyotr Yakovlevich Ufimtsev was born into a peasant family in the village of Ust-Charyshskaya Pristan, located in the Altai region of the West Siberian Krai (now part of Altai Krai) in the Russian Soviet Federative Socialist Republic (RSFSR), then part of the Soviet Union (USSR). His early life was marked by tragedy — when he was just three years old, his father was repressed by the Soviet regime and later died in a gulag, a fate shared by many victims of Stalin's Great Purge. Ufimtsev pursued a career in academia and engineer ...
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Ust-Charyshskaya Pristan
Ust-Charyshskaya Pristan () is a types of inhabited localities in Russia, rural locality (a ''village#Russia, selo''), founded in 1773, and the administrative center of Ust-Pristansky District of Altai Krai, Russia, located along the Ob River in the West Siberian Plain, south of Barnaul. Population: References

Rural localities in Ust-Pristansky District Tomsk Governorate Populated places established in 1773 {{UstPristansky-geo-stub ...
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