<DOC>
<DOCNO>
204
</DOCNO>
<TITLE>
a study of the application of airfoil section data
to the estimation of the high subsonic speed characteristics
of swept wings .
</TITLE>
<AUTHOR>
hunton,l.w.
</AUTHOR>
<BIBLIO>
naca rm a55c23, 1955.
</BIBLIO>
<TEXT>
  estimates of the variation with
mach number of the aerodynamic
characteristics of swept wings are made
on the basis of airfoil section
data combined with span-loading theory .
the analysis deals with examinations
of some 26 wings and wing-body
combinations ranging in sweep
angle from 30 to 60 and for mach
numbers between 0.6 and 1.0 .
  results of the study indicate
that the two-dimensional section data
afford good qualitative information
for such high-speed aerodynamic
characteristics as the variation with
mach number of drag, zero-lift
pitching-moment coefficient, and lift
coefficient for flow separation .
quantitative estimates of the force
and moment divergence mach numbers
could not be made with any degree of
certainty from the airfoil data
alone .  somewhat improved quantitative
estimates for a given configuration
were obtainable by basing the
estimates on the measured characteristics
for a wing of similar plan form
but different section, and adjusting
for the effects of differences in
section on the basis of section data .
</TEXT>
</DOC>
