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The Focke-Wulf Fw 42 was a design for a twin-engined medium bomber, of canard configuration, that was designed by Focke-Wulf Flugzeugbau AG in Germany in the early 1930s. Several air forces expressed interest in the aircraft; however, despite its advanced design being proved sound in wind tunnel testing, the Fw 42 failed to win a contract for development, and no examples of the type were ever built. ==Development and design== Designed by Heinrich Focke in response to a 1929 specification issued by the Air Department of the Reichswehr,〔Herwig and Rode 2000, p. 17.〕 the design of the Fw 42 was based on that of Focke's earlier F 19 ''Ente'' (German: "Duck") light transport.〔 The aircraft's design featured a long, slender fuselage with gun positions at each end, an aft-mounted wing with a "tail-first", or canard, configuration, fully retractable tricycle landing gear, and an internal bomb bay.〔Lepage 2009, p. 144.〕 The aircraft was planned to be operated by a crew of six.〔 Early versions of the Fw 42 design featured vertical stabilisers mounted on the end of the wing, with additional fins located just outboard of the engine nacelles, for a four-tail arrangement.〔 In addition, these early concepts featured the canard being mounted above the fuselage in a parasol arrangement, which had been used on the F 19.〔 As the design was developed between 1931 and 1933, the canard was moved from the top to the bottom of the fuselage, to improve vision for the pilot and fields of fire for the forwards gunner.〔 In addition, wind tunnel tests of the four-fin configuration showed that it did not provide a significant advantage over a single, large fin, and so the latter configuration was adopted for simplicity.〔 The Fw 42 was intended to be powered by two BMW VI 12-cylinder, liquid-cooled engines, which were expected to provide a top speed of nearly ,〔 and a range of over .〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Focke-Wulf Fw 42」の詳細全文を読む スポンサード リンク
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