Which engineer born on May 16, 1899 helped develop the first truly successful V/STOL design of aircraft?
Roy Chaplin Roland Henry Chaplin, OBE, FRAeS, (16 May 1899 – 13 December 1988), known as "Roy", was an aeronautical engineer who worked with Sydney Camm at Hawker Aircraft Limited from 1927 to 1962. He helped design the Hawker Fury biplane, the Hurricane monoplane, and the Harrier jump-jet. He graduated with a degree in engineering from London University and retired in the 1960s.
Alexander Mikulin Alexander Alexandrovich Mikulin (Russian: Алекса́ндр Алекса́ндрович Мику́лин ) (February 14 (O.S. February 2), 1895, Vladimir – May 13, 1985, Moscow) was a Soviet aircraft engine designer and chief designer in the Mikulin OKB. His achievements include the first Soviet liquid-cooled aircraft piston engine, the Mikulin AM-34, and the Mikulin AM-3 turbojet engine for the Soviet Union's first jet airliner, the Tupolev Tu-104. Mikulin also took part in the Tsar Tank project.