Russian Empire (1916-1918), Soviet Union (1941-1942)
Service/branch
Imperial Russian Army (1916-1918), Red Army (1941-1942)
Years of service
1916–1918, 1941–1942
Battles/wars
World War I
World War II
Yuri Vasilyevich Kondratyuk (Russian: Юрий Васильевич Кондратюк; Ukrainian: Юрій Васильович Кондратюк), real name Aleksandr Ignatyevich Shargei (Russian: Александр Игнатьевич Шаргей; Ukrainian: Олександр Гнатович Шаргей; 21 June 1897 – February 1942), was a Soviet engineer and mathematician. He was a pioneer of astronautics and spaceflight, a theoretician and a visionary who, in the early 20th century, developed the first known lunar orbit rendezvous (LOR), a key concept for landing and return spaceflight from Earth to the Moon.[1][2] The LOR was later used for the plotting of the first actual human spaceflight to the Moon. Many other aspects of spaceflight and space exploration are covered in his works.
Kondratyuk made his scientific discoveries in circumstances of war (including both World Wars and the Russian Civil War), continuous persecutions from authorities and serious illnesses. In fact, "Yuri Kondratyuk", the name under which he became known both in Russia and abroad, was a stolen identity he assumed in 1921 for his own protection.
^
Wilford, John (1969). We Reach the Moon; the New York Times Story of Man's Greatest Adventure. New York: Bantam Paperbacks. p. 167. ISBN 0-373-06369-0.
^Harvey, Brian (2007). Russian Planetary Exploration: History, Development, Legacy and Prospects. Springer.
Yuri Vasilyevich Kondratyuk (Russian: Юрий Васильевич Кондратюк; Ukrainian: Юрій Васильович Кондратюк), real name Aleksandr Ignatyevich Shargei (Russian:...
National University "YuriKondratyuk Poltava Polytechnic" is a Ukrainian university in Poltava. It is located on Pershotravneva Avenue. Previously known...
Kondratiuk (born 1970), Ukrainian politician Petro Kondratyuk (born 1979), Ukrainian footballer YuriKondratyuk (1897–1942), Ukrainian scientist and pioneer...
"Yuri Gagarin and Vostok 1, the First Human Spaceflight". Planetary Society. Archived from the original on 10 July 2022. Retrieved 10 July 2022. "Yuri...
scientist YuriKondratyuk in the 1930s, who had envisioned a thin and hollow concrete structure for a wind farm on Mount Ai-Petri in the Crimea. Kondratyuk successfully...
orbit rendezvous was first proposed in 1919 by Ukrainian engineer YuriKondratyuk, as the most economical way of sending a human on a round-trip journey...
Robert Ludvigovich Bartini Soviet rocketry Timeline of the Space Race YuriKondratyuk Mikhail Yangel Vladimir Chelomey Korolev is the transliteration used...
biography at MN) Leonid Kerber, an aircraft radio equipment designer. YuriKondratyuk, a pioneer of astronautics and spaceflight, the inventor of the gravitational...
precursors of the space program (Nikolai Kibalchich, Friedrich Zander, YuriKondratyuk) and its participants (Sergey Korolyov). The Cosmonauts Alley south...
Interplanetary Spaces is a science book by Soviet engineer and mathematician YuriKondratyuk published in 1929, significant for being one of the first documented...
also provided by the Ukrainian and Soviet engineer and mathematician YuriKondratyuk who developed the first known lunar orbit rendezvous (LOR), a key concept...
studied at the Poltava Oil and Gas College of National University "YuriKondratyuk Poltava Polytechnic" [uk] in his native Poltava, specializing in maintenance...
Kholodnaya (1893–1919) an actress of the early Imperial Russian cinema. YuriKondratyuk (1897–1942), astronautics and spaceflight pioneer; foresaw reaching...
будет читать, чтобы строить"), published in 1938 but dated 1918–1919, YuriKondratyuk suggested that a spacecraft traveling between two planets could be...
fraudster Albert Gonzalez – American computer hacker and criminal YuriKondratyuk – Soviet engineer and mathematician (1897–1942) Charles Stopford Brensinger...
elementary schools because of his hearing problem, so he was self-taught. YuriKondratyuk, a Ukrainian and Soviet engineer, pioneer of space exploration, rocketry...
orbit rendezvous (LOR) concept had been expressed as early as 1916 by YuriKondratyuk and 1923 by German rocket pioneer Hermann Oberth, NASA would provide...
NASA engineer Heinz-Hermann Koelle (1925–2011) – von Braun associate YuriKondratyuk (1897–1942) – first developer of the lunar orbit rendezvous concept...
Glivenko–Cantelli theorem, Glivenko's theorem, Glivenko–Stone theorem. YuriKondratyuk (1897—1942), mathematician, engineer. Developed the first known Lunar...
retrieved 7 March 2022 "History", nupp.edu.ua, National University «YuriKondratyuk Poltava Polytechnic», retrieved 7 March 2022 Wiernik 1905. Benjamin...
with capacity of 100 kW was developed under direction of inventor YuriKondratyuk and installed there in 1931. Before the war, it produced electricity...
cooperation with Poltava National Technical University named after YuriKondratyuk, Ukraine". asoiu.edu.az. Retrieved 2018-10-29. "Rector of ASOIU meets...
(1976) Joseph Kittinger, U.S. (1989) William J. Knight, U.S. (1998) YuriKondratyuk, Ukraine (now) Sergei Korolev, USSR (1976) Christopher C. Kraft, Jr...
Physics portal Spaceflight portal Apollo spacecraft feasibility study YuriKondratyuk Apollo would take this even further, with a Lander which split into...
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