元となった辞書の項目
area rule
noun
A
rule
stating
that
an
airplane
designed
with
the
same
cross-sectional
area
distribution
in
the
longitudinal
direction
as
the
Sears-Haack
body
generates
the
same
wave
drag
as
this
body,
largely
independent
of
the
actual
shape;
used
in
aerodynamics
to
reduce
drag,
typically
by
narrowing
the
fuselage
at
the
wing
roots.
意味（1）
A
rule
stating
that
an
airplane
designed
with
the
same
cross-sectional
area
distribution
in
the
longitudinal
direction
as
the
Sears-Haack
body
generates
the
same
wave
drag
as
this
body,
largely
independent
of
the
actual
shape;
used
in
aerodynamics
to
reduce
drag,
typically
by
narrowing
the
fuselage
at
the
wing
roots.
