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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
19
"If
that
was
not
the
case,"
broke
in
Lateral
Stability,
and
affecting
the
fashionable
Flying
Corps
stammer,
"it
would
be
a
h-h-h-o-r-rible
affair!
If
there
were
too
much
Keel-Surface
in
front,
then
that
gust
would
blow
the
Aeroplane
round
the
other
way
a
very
considerable
distance.
And
the
right-hand
Surface
being
on
the
outside
of
the
turn
would
have
more
speed,
and
consequently
more
Lift,
than
the
Surface
on
the
other
side.
That
means
a
greater
proportion
of
the
Lift
on
that
side,
and
before
you
could
say
Warp
to
the
Ailerons
over
the
Aeroplane
would
go--probable
result
a
bad
side-slip"
(see
illustration
A,
over-leaf).
"And
what
can
the
Pilot
do
to
save
such
a
situation
as
that?"
said
Efficiency.
"Well,"
replied
Lateral
Stability,
"he
will
try
to
turn
the
Aeroplane
sideways
and
back
to
an
even
keel
by
means
of
warping
the
Ailerons
or
little
wings
which
are
hinged
on
to
the
Wing-tips,
and
about
which
you
will
hear
more
later
on;
but
if
the
side-slip
is
very
bad
he
may
not
be
able
to
right
the
Aeroplane
by
means
of
the
Ailerons,
and
then
the
only
thing
for
him
to
do
is
to
use
the
Rudder
and
to
turn
the
nose
of
the
Aeroplane
down
and
head-on
to
the
direction
of
motion.
The
Aeroplane
will
then
be
meeting
the
air
in
the
direction
it
is
designed
to
do
so,
and
the
Surfaces
and
also
the
controls
(the
Rudder,
Ailerons,
and
Elevator)
will
be
working
efficiently;
but
its
attitude
relative
to
the
earth
will
probably
be
more
or
less
upside-down,
for
the
action
of
turning
the
Aeroplane's
nose
down
results,
as
you
will
see
by
the
illustration
B,
in
the
right
wing,
which
is
on
the
outside
of
the
circle,
travelling
through
the
air
with
greater
speed
than
the
left-hand
wing.
More
Speed
means
more
Lift,
so
that
results
in
overturning
the
Aeroplane
still
more;
but
now
it
is,
at
any
rate,
meeting
the
air
as
it
is
designed
to
meet
it,
and
everything
is
working
properly.
It
is
then
only
necessary
to
warp
the
Elevator,
as
shown
in
illustration
C,
in
order
to
bring
the
Aeroplane
into
a
proper
attitude
relative
to
the
earth."
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