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21 Ιαν 2023 · This slide gives technical definitions of a wing’s geometry, which is one of the chief factors affecting airplane lift and drag. The terminology used here is used throughout the airplane industry today and was mostly known to the Wright brothers in 1900.
Wings are geometrically defined in terms of their span (distance from wing tip to wing tip), planform (their shape in outline looking down on the wing from above), twist (pitch angle) distribution, and cross-section (i.e., airfoil section shape or profile shape).
Since the wing geometry and its features are influencing all other aircraft components, we begin the detail design process by wing design. The primary function of the wing is to generate sufficient lift force or simply lift (L). However, the wing has two other productions, namely drag force or drag (D) and nose-down pitching moment (M).
A variable geometry aircraft is able to change its physical configuration during flight. Some types of variable geometry craft transition between fixed wing and rotary wing configurations. For more about these hybrids, see powered lift.
26 Ιουν 2024 · In order to characterize the geometry and nomenclature of a typical commercial aircraft wing, the following wing elements are illustrated in Figure 3.20: Wingspan \(b\). Chords: root chord \(c_r\) and tip chord \(c_t\).
Definition of the wing sections. Wing sections are positioned parallel to the plane of symmetry of the aircraft (Fig. 7.1). A wing section is produced by scaling up an airfoil section. The airfoil section is described by the section coordinates of the top of the section. u = y f ( x ) and the bottom of the section. l = y f ( x ) with0 £ x £ 1 .
This slide gives technical definitions of a wing's geometry, which is one of the chief factors affecting airplane lift and drag. The terminology is used throughout the airplane industry and is also found in the FoilSim program developed here at NASA Glenn.
