Fokker XA-7

The Fokker XA-7 was a United States prototype attack aircraft ordered in December 1929 and first flown in January 1931 by Fokker and then General Aviation Corporation, which bought Fokker-America in 1930, and it was entered in a competition held by the United States Army. It was a two-seat low-wing all-metal monoplane with a thick cantilever wing, a tunnel radiator and two closely spaced open cockpits, powered by a Curtiss V-1570-27 Conqueror V-12 liquid-cooled piston engine of 450 kW driving a two-bladed Hamilton Standard propeller, with a maximum speed of 296 km/h at sea level. Despite some innovative features it did not proceed past flight test status: the Curtiss A-8 won the competition, A-7 development was not continued and the sole prototype was scrapped.