A Pratt & Whitney R-2800-39 18-cylinder radial airplane engine. First run in 1937, over 125,000 of these were built in all variants, and saw extensive service in World War II combat, then in civilian airplanes for years afterward.
1915 - Morane-Saulnier Type N was the first French aircraft to be developed specifically as a fighter. It equipped four squadrons of the Royal Flying Corps, in which it was designated the Bullet, and was operated in limited numbers by the 19th Squadron of the Imperial Russian Air Force.
OA-1 "Clyde Clipper" designed by Vincent Burnelli in 1937. A 20ft wide "lifting" fuselage was used to reduce drag. Only one had been completed before the start of the war. The sole aircraft was pressed into service by the RAF and was eventually turned over to the Free French Air Force in Africa, where at one point it served as the personal transport of General Charles de Gaulle.