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Darmstadt D-18
The Darmstadt D-18 was a German light sports aircraft that was designed and built in the late-1920s by Akaflieg of Darmstadt University of Technology.
==Design and development==
The aircraft was designed by F. Fecher in the Akaflieg (academic group of flyers) of Darmstadt University of Technology. It was a development of the D-16 project, that was designed for a sports aircraft contest organized by Idaflieg in 1926. The D-16 design with a 40-horsepower (hp) engine won the first prize, but was not built as the designer decided to strengthen the construction and fit a more powerful 88 hp Armstrong Siddeley Genet radial engine . The result was the D-18, a single aircraft was built in 1929.
The aircraft featured a quite unorthodox layout, being a cantilever biplane, with an upper wing placed low above a fuselage and ahead of a lower wing. Particular thought was given to aerodynamics and lightness and the aircraft was small, with a streamlined profile. Initially the D-18 had two open cockpits, but by 1930 it had been modified and fitted with a closed canopy covering both cockpits.
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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