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It had a unique mechanism for wing sweep that combined tracks on the fuselage sides and the underside of the wings, which was actuated by hydraulically-driven ball screws positioned at the wing's inner ends. [20] The wings could be swept from 20 degrees to 70 degrees; at the 70-degree position, longitudinal control was maintained by wing tip ...
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 ...
The Handley Page Victor was equipped with a crescent wing, with three values of sweep, about 48 degrees near the wing root where the wing was thickest, a 38 degree transition length and 27 degrees for the remainder to the tip. [16] [17] Modern solutions to the problem no longer require "custom" designs such as these.
To test the low-speed characteristics of swept wings, the US Navy contracted Bell Aircraft to modify two P-63 Kingcobras [note 1] as test aircraft for use by NACA. [2] These aircraft, assigned the bureau numbers 90060 and 90061, [ note 2 ] were designated L-39-1 and L-39-2 , based on Bell's code letter "L" and the aircraft's model number "39".
This is to compensate for other design elements' influence on the dihedral effect. These other elements (such as wing sweep, vertical mount point of the wing, etc.) may be more difficult to change than the dihedral angle. As a result, differing amounts of dihedral angle can be found on different types of fixed-wing aircraft.
The Hornet has approximately 4 degrees of washout. Washout is a characteristic of aircraft wing design which deliberately changes the lift distribution across the span of an aircraft’s wing. The wing is designed so that the angle of incidence is greater at the wing roots and decreases across the span, becoming lowest at the wing tip.
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.
By changing its sweep angle in this way, drag can be reduced at high speed (with the wing swept) without sacrificing low speed performance (with the wing perpendicular). This is a variation on the classic swing-wing design, intended to simplify construction and retain the center of gravity as the sweep angle is changed.