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Northrop A-17
The Northrop A-17, a development of the Northrop Gamma 2F was a two-seat, single-engine, monoplane, attack bomber built in 1935 by the Northrop Corporation for the U.S. Army Air Corps. A-17s used by air forces of the British Commonwealth designated the aircraft as the "Nomad."
==Development and design==
The Northrop Gamma 2F was an attack bomber derivative of the Northrop Gamma transport aircraft, developed in parallel with the Northrop Gamma 2C, (of which one was built), designated the YA-13 and XA-16. The Gamma 2F had a revised tail, cockpit canopy and wing flaps compared with the Gamma 2C, and was fitted with new semi-retractable landing gear. It was delivered to the United States Army Air Corps for tests on 6 October 1934, and after modifications which included fitting with a conventional fixed landing gear, was accepted by the Air Corps.〔Pelletier ''Air Enthusiast'' May–June 1998. pp. 63-64.〕 A total of 110 aircraft were ordered as the A-17 in 1935.〔("A-17/8A Light Attack Bomber." ) ''Boeing''. Retrieved: 11 February 2008.〕
The resulting A-17 was equipped with perforated flaps, and had fixed landing gear with partial fairings. It was fitted with an internal fuselage bomb bay that carried fragmentation bombs and well as external bomb racks.
Northrop developed a new landing gear, this time completely retractable, producing the A-17A variant. This version was again purchased by the Army Air Corps, who placed orders for 129 aircraft.〔Pelletier ''Air Enthusiast'' May–June 1998, p. 65.〕 By the time these were delivered, the Northrop Corporation had been taken over by Douglas Aircraft Company, export models being known as the Douglas Model 8.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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