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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.
The wing span was 12.0 metres (39.4 ft) when unswept and 10.0 metres (32.8 ft) when fully swept. [3] The long main undercarriage retracted into the wing, while a nose wheel completed the tricycle undercarriage. [4] The P.202 was powered by a pair of BMW 003 turbojets, slung underneath the fuselage centre section and exhausting behind the wing.
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.
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Small shoulder-wing aircraft may use forward sweep to maintain a correct CoG. Some types of variable geometry vary the wing sweep during flight: Swing-wing: also called "variable sweep wing". The left and right hand wings vary their sweep together, usually backwards. Seen in a few types of military aircraft, such as the General Dynamics F-111 ...
A straight-winged North American FJ-1 flying next to a swept-wing FJ-2 in 1952.. There are three main reasons for sweeping a wing: [1] 1. to arrange the center of gravity of the aircraft and the aerodynamic center of the wing to coincide more closely for longitudinal balance, e.g. Messerschmitt Me 163 Komet and Messerschmitt Me 262.
The airport diagrams are part of the Aeronautical Information Publication (AIP) which is updated on a 28-day cycle as per the ICAO.For the FAA's digital - Terminal Procedures Publication/Airport Diagrams, this causes a change in the URL involving four numbers: the first two represent the year (09 for 2009, 10 for 2010) and the second two represent the current AIRAC cycle (01 through 13).
Swept wings are a practical outcome of the desire to have a low thickness-to-chord ratio at high speeds and a lower one at lower speeds during takeoff and landing. The sweep stretches the chord as seen by the airflow, while still keeping the wetted area of the wing to a minimum. For practical reasons, wings tend to be thickest at the root ...