Last Updated：2026/01/01
Sentence
The
tailplane
usually
becomes
more
effective
as
a
stabiliser
at
high
Mach
numbers
because
there
are
decreases
of
wing
lift-curve
slope
and
rate
of
change
of
downwash
with
mean
lift
coefficient.
The
latter
effect
is
mainly
due
to
the
wing-root
shock
stalling
at
a
lower
Mach
number
than
the
rest
of
the
wing.
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The tailplane usually becomes more effective as a stabiliser at high Mach numbers because there are decreases of wing lift-curve slope and rate of change of downwash with mean lift coefficient. The latter effect is mainly due to the wing-root shock stalling at a lower Mach number than the rest of the wing.
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