ESDU 10023:2012

$89.05

Computer program for calculation of equivalent straight-tapered wing planform

Published By	Publication Date	Number of Pages
ESDU	2012-05-01	23

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Category: ESDU

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Description

The methods of many Data Items that predict the aerodynamics of
wings and wing-body combinations assume a straight-tapered wing for
the presentation of correlations in terms of the planform
parameters, aspect ratio, sweep and taper ratio. This reflects
their predominance in the database. However, the methods are often
also applicable to wings with modest cranks and sawteeth, but
implementation requires a suitable representation as an equivalent
straight-tapered planform.

Addendum A of ESDU 76003 describes a geometric construction of
such an equivalent wing. The concept has been employed as a
standard procedure in numerous applications within the ESDU
Aerodynamics Series and has proved satisfactory. Its employment is
subject to the proviso that although the geometric construction can
be applied to any multi-cranked wing, with or without sawteeth, it
would be expected to be a reasonable representation aerodynamically
only for wings where the leading-edge sweep is constant, or has
only minor changes, over the greater part of the span and for
conditions where the flow over the wing is fully attached.

This Data Item provides a computer program, ESDUpac A1023, that
calculates the geometry of the equivalent wing.

Additional information