ESDU 83040:2013

$89.05

Method for the rapid estimation of spanwise loading of wings with camber and twist in subsonic attached flow

Published By	Publication Date	Number of Pages
ESDU	2013-01-01	45

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ESDU 83040 gives a simple and rapid means of estimating the
spanwise loading of a wide range of cambered and twisted wing
planforms for unseparated subcritical flow. It is based on
lifting-surface theory and extends, to take account of camber and
twist, the basic method of ESDU T.D. Memor. 6403 for spanwise
loading due to incidence of uncambered and untwisted wings. The
effect of camber is treated by considering it as imparting an
equivalent incremental twist to the wing. A simple artifice is used
to represent the twist distribution by a combination of linear
segments. From the linear representation effective values of local
twist are devised for use in the method. Spanwise loadings can be
estimated either at a given incidence or a given wing lift
coefficient. The method is applicable to wing planforms for which
the reduced aspect ratio (ßA) is in the range 1.5 to 12 and the
sweep parameter (Atan?½) is in the range 0 to 6. The wings can have
any taper ratio (?) between 0 to 1 with straight, cranked or curved
leading edges, and straight or cranked trailing edges. The method
is illustrated by three worked examples.

A computer program, ESDUpac A9510, described in ESDU 95010, is
available that calculates the spanwise loadings directly from
steady liftingsurface theory using the Multhopp-Richardson
solution.


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Published Code	ESDU
Published By	ESDU
Publication Date	2013-01-01
Pages Count	45
Language	English
File Size	481.3 KB

ESDU 83040:2013

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