Arkady Ostashev, Russian engineer and educator (d. 1998)
Arkady Ilyich Ostashev (Russian: Аркадий Ильич Осташев; 30 September 1925 – 12 July 1998), KN, was a Russian mechanical engineer who participated in the Soviet Union's first launch of the Sputnik, and of the first cosmonaut. He was a Candidate of Technical Sciences, docent, laureate of the Lenin and state prizes, senior test pilot of missiles and space-rocket complexes of OKB-1 as well as a companion of Sergey Korolev, the head of the Soviet space program.