ESDU 76003
Geometrical properties of cranked and straighttapered wing planforms.
Abstract:
ESDU 76003 gives expressions (in terms of wing geometry) for the length, and position of the quarterchord point, of the geometric (or standard) mean and aerodynamic mean chords of a wing whose leading and trailingedges are formed of straight line segments and whose leading and trailingedges have any arbitrary number of cranks; the wing has either pointed or straight streamwise tips. For the special case of the straighttapered wing, curves give the lengths of the chords and their quarter chord position as a function of taper ratio, centreline chord, aspect ratio, and quarterchord sweep. Also given for that case are curves relating the sweep angles of any two fixed percentage chord lines. Addendum A shows how to obtain the geometry of a straighttapered wing equivalent to some arbitrary planform mounted on a fuselage so that the two have the same aerodynamic characteristics. This technique has been found most useful by ESDU as a means of correlating liftingsurface aerodynamic data. Finally, Addendum B gives a simple geometrical construction for obtaining the size and longitudinal location of the aerodynamic mean chord for a straighttapered wing.Indexed under:
 Aerodynamic Mean Chord
 Chord
 Equivalent Wing Geometry
 Geometric Mean Chord
 Mean Aerodynamic Chord
 Standard Mean Chord
 Wing Geometry
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Data Item ESDU 76003  

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