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Breguet 14
The Breguet 14 was a French biplane bomber and reconnaissance aircraft of World War I. It was built in very large numbers and production continued for many years after the end of the war. Apart from its widespread usage, it was noteworthy for becoming the first aircraft in mass production to use large amounts of metal rather than wood in its structure. This allowed the airframe to be lighter than a wooden airframe of the same strength, in turn making the aircraft very fast and agile for its size, able to outrun many of the fighters of the day. Its strong construction was able to sustain much damage, it was easy to handle and had good performance. The Breguet 14 is often considered one of the best aircraft of the war.
==Design and development==
The aircraft was designed by Louis Breguet, who flew the first prototype (originally designated Breguet AV Type XIV) on its first flight on 21 November 1916. The design was a come-back for Breguet to designing conventional planes, after designing the pusher-type Breguet BUM. Later that month, the French Army's ''Section Technique de l' Aéronautique'' (S.T.Aé.) issued requirements for four different new aircraft types. Breguet submitted his new design for two of those categories - reconnaissance aircraft, and bomber.
Following evaluation in February, the Breguet 14 was accepted for both these roles, and in March, orders were placed for 150 reconnaissance aircraft and 100 bombers, designated Breguet 14 A.2 and 14 B.2 respectively (by 1918 written Breguet XIV A2/B2). The A.2 was equipped with a camera, with some carrying radios, while the lower wing of the 14 B.2 was modified slightly in order to accommodate bomb racks (built by Michelin). Both variants featured automatic, bungee-cord operated aerodynamic flaps, but these were not fitted to production aircraft. A number of B2 models were equipped with the U.S. built Liberty engine and were denoted Breguet 14 B2 L.
Other minor variants flown in small numbers during the war included the 14 B.1 long-range single-seat bomber, the 14 GR.2 long-range reconnaissance, the 14 H floatplane, the 14 S air ambulance and the 14 Et.2 trainer. Later variants 14bis A2 and 14bis B2 featured improved wing. An improved variant with bigger wings was the 16. There was also the two-seat fighter 17, which was built in small numbers only.
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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