When was the American single-engined, single-seat, all-metal fighter and ground-attack aircraft first flew in which design Donovan Reese Berlin was associated?
Don R. Berlin Donovan Reese Berlin (June 13, 1898 – May 17, 1982) was an American military aircraft designer and aircraft industry executive. Among the many designs with which he is associated, are the Curtiss P-36 Hawk, Curtiss P-40 Warhawk and Fisher P-75 Eagle. His name is "synonymous with the development of military aviation". He designed aircraft that were safe, rugged and "a pilot's joy."
Ilyushin Il-1 The Ilyushin Il-1 (Cyrillic Илью́шин Ил-1) was a Soviet fighter aircraft developed during World War II by the Ilyushin design bureau. It was designed in 1943 as an armored fighter for use at low and medium altitudes against the latest German fighters, but by the time it made its first flight in 1944, the Soviets had already achieved air superiority and it was therefore redundant. Only one example was built, but the parallel two-seat attack version led to the successful Ilyushin Il-10.