naca-report-1088
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- September 7, 2016 Create Date
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National Advisory Committee for Aeronautics, Report - Theoretical Damping in Roll and Rolling Moment Due to Differential Wing Incidence for Slender Cruciform Wings and Body Combinations
A method of analysis based on slender-wing theory is developed
to in investigate the characteristics in roll of slender cruciform wings
and wing—body combinations. The method makes use of the
conformal mapping processes of classical hydrodynamics which
transform the region outside a circle and the region outside
an arbitrary arrangement of line segments intersecting at the
orig-in. The method of analysis may be utilized to solce other
slender cruciform luring—body problems incolcing arbitrarily
assigned boundary conditions.
Little information is currently available which will permit
an evaluation of the stability and control problems associated
with the use of cruciform wing and Wing-body combinations.
In some instances to. g., the important case of lift), the chac~
uctcristics of these wings and wing—body combinations may
be calculated from known solutions for planar systems! but
in other cases the effect- of interference between components
may be so large as to invalidate the results of such proce—
dures. Additional theoretical treatment is therefore re—
quired to establish the magnitude of these interference effects.
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