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A variable-sweep wing, colloquially known as a "swing wing", is an airplane wing, or set of wings, that may be modified during flight, swept back and then returned to its previous straight position. Because it allows the aircraft's shape to be changed, it is a feature of a variable-geometry aircraft.
A composite photograph showing the Bell X-5’s variable-sweep wing. The Bell X-5 was the first aircraft capable of changing the sweep of its wings in flight. It was inspired by the untested wartime P.1101 design of the German Messerschmitt company. In a further development of the German design, which could only have its wing sweepback angle ...
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The first variable-sweep aircraft from Dassault emerged as the single-engined, two-seat Mirage G fighter in 1967, essentially a swing wing version of the Mirage F2.The wings were swept at 22 degrees when fully forward and 70 degrees when fully aft and featured full-span double-slotted trailing edge flaps and two-position leading edge flaps.
Developed from the Sukhoi Su-7, the Su-17 was the first variable-sweep wing aircraft to enter Soviet service and featured updated avionics. The aircraft also has variants which were designed to be exported to non-Soviet states such as the Sukhoi Su-22 and the less popular Su-20. It was produced from 1967 to 1990.
For fixed wing aircraft, the type of airfoil the wing uses. Eg, see NACA airfoil for information on airfoil types. aspect ratio for fixed wing aircraft, the aspect ratio of the wing - a parameter generally of interest in gliders (sailplanes) {{{empty weight main}}}, {{{empty weight alt}}}
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The wing sweep varies between 16 degrees and 72.5 degrees (full forward to full sweep). [27] The airframe consisted mostly of aluminum alloys with steel, titanium and other materials also used. [28] The fuselage is a semi-monocoque structure with stiffened panels and honeycomb sandwich panels for skin.