Yuri Kondratyuk, Date of Birth, Place of Birth, Date of Death

Yuri Kondratyuk

ukrainian soviet scientist

Date of Birth: 09-Jun-1897

Place of Birth: Poltava, Poltava Oblast, Ukraine

Date of Death: 23-Feb-1942

Profession: engineer, physicist, aerospace engineer

Zodiac Sign: Gemini

Yuri Vasilievich Kondratyuk (real name Oleksandr Ignatyevich Shargei, Ukrainian: ????????? ???????? ??????, Oleksandr Hnatovych Sharhei) (21 June 1897 – February 1942) was a Ukrainian 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.
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, repetitious persecutions from authorities and serious illnesses. "Yuriy Kondratyuk" is a stolen identity under which the author was hiding after the Russian revolution and became known to the scientific community.